Dr. Yoon-Bong Hahn, B.S., M.S., Ph.D.

Research Affiliate

se@liberty.edu

Education

B. S., Chemical Engineering, Hanyang University
M. S., Chemical Engineering, Seoul National University
Ph. D., Metallurgical Engineering, University of Utah (USA)

Biography

Professor Hahn is Regents Professor of the Jeonbuk National University (JBNU), Fellow of the Korea Academy of Science and Technology (KAST), Fellow of the American Ceramic Society (ACerS) and Fellow of the International Association of Advanced Materials (IAAM). He joined JBNU in 1991, prior to which he worked for LG Metals Research Center for 1988-1991 after he received his Ph.D. in Metallurgical Engineering from University of Utah in 1988. His research interest is synthesis of metal and metal oxide nanostructures and their applications for solar cells, chemical and biological sensors, and printed electronics, resulting in over 320 SCI papers (citations over 17,310 and h-index over 70 in Google scholar), 19 patents and two technology transfers to industry. He also authored/edited 7 books including ‘Next-Generation Solar Cells: Principles and Materials’ published by Jenny Stanford Publishing in 2023, and ‘Metal Oxide Nanostructures and Their Applications’ (5 volume sets) published by American Scientific Publishers in 2010. He received MCARE Best Research Award 2019 and WooSeongIl Materials Award 2018 by KIChE, Asian Energy Technology Award 2017 by International Association of Advanced Materials, Rudolf A. Marcus Award for outstanding research in the area of chemical science in 2016, the American Ceramic Society Global Ambassador Award 2016, the Scientist of the Month Award in 2011 by Korea Ministry of Education, Science and Technology, the CBNU’s Best Research Professor Award consecutively in 2008-2010, and Top 100 Scientists Award four times in 2005, 2011, 2014 and 2015 accredited by International Biographical Center, Cambridge, UK.

Professional Activities

Fellow, Korea Academy of Science and Technology (KAST)
Fellow of the American Ceramic Society (ACerS)
Fellow of the International Association of Advanced Materials (IAAM)
Editor, Science of Advanced Materials (American Scientific Publishers, ASP),
Senior Editor, Journal of Nanoscience Letters (Simplex Academic Publishers)
Editorial Board members: Journal of Nanoengineering and Nanomanufacturing (American Scientific Publishers), Journal of Nano Energy and Power Research (ASP), and Open Surface Science J. (Bentham Science Publishers)
Organized over 30 international symposiums for advanced materials and nanotechnology, acting as Chair and Organizers
Frequent reviewer for KOSEF, NRF, and other research fund agencies
Memberships in KIChE, MRS, ACS, and ACerS

Awards and Honors

MCARE Best Research Award 2019 (Korean Institute of Chemical Engineering & American Ceramics Society)
Woo SeongIl Materials Award 2018 (Korean Institute of Chemical Engineering)
Asian Energy Technology Award 2017 (International Association of Advanced Materials, Sweden)
Rudolph A. Marcus Award 2016 (Science Advances Today)
ACerS Global Ambassador Award 2016 (American Ceramics Society)
Top 100 Scientists (2005, 2011, 2014, 2015 by International Biographical Center, Cambridge)
Best Poster Paper Award (2 papers awarded, July 2013, NANO KOREA 2013)
Best Poster Paper Award (November 2013, Inernational Workshop on Flexible Printed Electronics)
Best Poster Award: Second Place (January, 2013, International Conference on Advanced Ceramics and Composites, ACerS)
The Scientist of Month Award (July 2011, Korea Ministry of Education, Science and Technology)
Best Research Professor Award (CBNU, 2007-2009)
Best Paper Award (E-MRS, 2007)
Best Paper Award (IUMRS-ICA, 2006)
American Medal of Honor (American Biographical Institute, 2003)
Best Paper Award (Korean Institute of Chemical Engineering, 2003)
Best Professor Award (Jeonbuk National University, 2003)
TMS Best Science Award (TMS, 1990)

Research Interests

Synthesis of metal, metal oxide, graphene and its derivatives, functional composites
Development of solar cells, chemical and biological sensors, and electronic devices
Formulation of nanoinks for printed electronics application

Research achievements

SCI papers: over 330 papers (citations over 17250, h-index over 70, Google scholar)
Registered patents: 19 ea
Technology transfer: 2 ea – Nonenzymatic glucose sensor based on transistor and manufacturing method thereof (Korean patent 10-2021-0023041) – Silver ink composition and methods for preparing the same (Korean patent 10-2340821)
Book publications:7 books

Publications

Books

Next-Generation Solar Cells: Principles and Materials, authored by Yoon-Bong Hahn, Tahmineh Mahmoudi and Yousheng Wang, Jenny Stanford Publishing, June 2023.
Metal Oxide Nanostructures and Their Applications, Ed. Ahmad Umar and Yoon-Bong Hahn (5 volume set), American Scientific Publishers, March 2010.
The Blue Light-Emitting Diodes, Rak-Jun Choi, Yoon-Bong Hahn, Hyung-Jae Lee, VDM Verlag Dr. Muller, Germany, 2010 (ISBN: 978-3-639-26819-5)
Adaptive, Active and Multifunctional Smart Materials, Ed. Pietro Vincenzini, Yoon-Bong Hahn, Salvatore Iannotta, Andreas Lendlein, Vincenzo Palermo, Shashi Paul, Concita Sibilia, S. Ravi P. Silva and Gopalan Srinivasan, Trans Tech Publications Ltd, 2013. (ISBN-10: 390815863X)

Papers

Qiaoyan Ma, Yousheng Wang, Liming Liu, Peng Yang, Wujie He, Xing Zhang, Jianzha Zheng, Mengen Ma, Meixiu Wan, Yuzhao Yang, Cuiling Zhang, Tahmineh Mahmoudi, Shaohang Wu, Chong Liu, Yoon-Bong Hahn, Yaohua Mai, “One-step dual-additive passivated wide-bandgap perovskites to realize 44.72%-efficient indoor photovoltaics”, Energy & Environmental Science, in press (2024). https://doi.org/10.1039/D3EE04022D (IF=39.714)
Liming Liu, Yajie Ma, Yousheng Wang, Qiaoyan Ma, Zixuan Wang, Zigan Yang, Meixiu Wan, Tahmineh Mahmoudi, Yoon-Bong Hahn & Yaohua Mai, “Hole-Transport Management Enables 23%-Efficient and Stable Inverted Perovskite Solar Cells with 84% Fill Factor”, Nano-Micro Letters 15, 117 (2023). (IF=23.655)
Zixuan Wang, Liming Liu, Yousheng Wang, Yajie Ma, Zigan Yang, Meixiu Wan, Hongbin Zhu, Tahmineh Mahmoudi, Yoon-Bong Hahn, Yaohua Mai, “Green antisolvent-mediators stabilize perovskites for efficient NiOx-based inverted solar cells with Voc approaching 1.2 V,” Chemical Engineering Journal 457 (2023) 141204. ) (IF=16.744)
Tahmineh Mahmoudi, Mohammadhosein Kohan, Won-Yeop Rho, Yousheng Wang, Yeon Ho Im, and Yoon-Bong Hahn, “Tin-Based Perovskite Solar Cells Reach Over 13% with Inclusion of N-Doped Graphene Oxide in Active, Hole-Transport and Interfacial Layers”, Advanced Energy Materials 12, 2201977 (2022). (IF=29.698)
Mohammadhosein Kohan, Tahmineh Mahmoudi, Yousheng Wang, Yeon Ho Im, Yoon-Bong Hahn, SnO2/BaSnO3 electron transport materials for stable and efficient perovskite solar cells”, Applied Surface Science 613, 156068 (2023) (IF=7.392)
Jeyaraman Anupriya, Sethupathi Velmurugan, Shen-Ming Chen, Yoon-Bong Hahn, “Enhanced electrochemical performance of in-situ synthesized Cu nanoparticle/C spheres composite for highly sensitive sensing of azathioprine immunosuppressive drug”, Composites Part B 242, 110079 (2022) (IF=11.322)
Hui Ju, Yajie Ma, Ye Cao, Zixuan Wang, Liming Liu, Meixiu Wan, Tahmineh Mahmoudi, Yoon-Bong Hahn, Yousheng Wang, Yaohua Mai, “Roles of Long-Chain Alkylamine Ligands in Triple-Halide Perovskites for Efficient NiOx-Based Inverted Perovskite Solar Cells”, Solar RRL 6, 2101082 (2022) (IF= 9.173)
Umesh T. Nakate, Pramila Patil, Yogesh T. Nakate, Seok-In Na, Y.T. Yu, Yoon-Bong Hahn, “Ultrathin ternary metal oxide Bi2MoO6 nanosheets for high performance asymmetric supercapacitor and gas sensor applications”, Applied Surface Science 551 (2021) 149422. (IF = 7.392)
Koteeswara Reddy Nandanapalli, Devika Mudusu, Ramesh Karuppannan, Yoon-Bong Hahn, Sungwon Lee, “Predominantly enhanced catalytic activities of surface protected ZnO nanorods integrated stainless-steel mesh structures: A synergistic impact on oxygen evolution reaction process”, Chemical Engineering Journal, 429 (2022) 132360 (IF = 16.273)
Ahmad Umar, Ahmed A. Ibrahim, H.Y. Ammar, Umesh T. Nakate, Hasan B. Albargi, Y.B. Hahn, “Urchin like CuO hollow microspheres for selective high response ethanol sensor application: Experimental and theoretical studies”, Ceramics International, 47 (2021) 12084-12095. (IF = 5.532)
V. Nagal, V. Kumar, Rafiq Ahmad, M. Khan, Zishan H. Khan, K. Singh, H. Furukawa, A. Khosla, Yoon Bong Hahn, and A. K. Hafiz, “Review-Emerging Applications of g-C3N4 Films in Perovskite-Based Solar Cells”, ECS Journal of Solid State Science and Technology 10 (2021) 065001.
T. Mahmoudi, W.-Y. Rho, M. Kohan, Y.H. Im, S. Mathur, and Yoon-Bong Hahn, “Suppression of Sn2+/Sn4+ oxidation in tin-based perovskite solar cells with graphene-tin quantum dots composites in active layer”, Nano Energy 90, 106495 (2021). (IF = 19.069)
Yousheng Wang, Gowri Manohari Arumugam, Tahmineh Mahmoudi, Yaohua Mai, Yoon-Bong Hahn, “A critical review of materials innovation and interface stabilization for efficient and stable perovskite photovoltaics”, Nano Energy 87 (2021) 106141. (IF = 19.069)
Yousheng Wang, Hui Ju, Tahmineh Mahmoudi, Chong Liu, Cuiling Zhang, Shaohang Wu, Yuzhao Yang, Zhen Wang, Jinlong Hu, Ye Cao, Fei Guo, Yoon-Bong Hahn, Yaohua Mai, “Cation-size mismatch and interface stabilization for efficient NiOx-based inverted perovskite solar cells with 21.9% efficiency”, Nano Energy 88 (2021) 106285. (IF = 19.069)
Umesh T. Nakate, Pramila Patil, Seok-In Na, Y.T. Yu, Eun-kyung Suh, Yoon-Bong Hahn, “Fabrication and enhanced carbon monoxide gas sensing performance of p-CuO/n-TiO2 heterojunction device”, Colloids and Surfaces A: Physicochemical and Engineering Aspects 612 (2021) 125962 (IF=5.518)
Kiesar Sideeq Bhat, Rafiq Ahmad, Tahmineh Mahmoudi, and Yoon-Bong Hahn, “High Performance Chemical Sensor with Field-Effect Transistors Array for Selective Detection of Multiple Ions”, Chemical Engineering Journal ,417 (2021) 128064 (IF = 19.069)
Tahmineh Mahmoudi, Yousheng Wang, Yoon-Bong Hahn, “Highly Stable Perovskite Solar Cells Based on Perovskite/NiO-Graphene Composites and NiO Interface with 25.9 mA/cm2 Photocurrent Density and 20.8 % Efficiency”, Nano Energy 79 (2021) 105452 (IF = 19.069)
Devika Mudusu, Koteeswara Reddy Nandanapalli, Sungwon Lee, Yoon-Bong Hahn, “Recent advances in graphene monolayers growth and their biological applications: A review”, Advances in Colloid and Interface Science 283 (2020) 102225. (IF=15.60)
Yousheng Wang, Tahmineh Mahmoudi, and Yoon-Bong Hahn, “Highly stable and Efficient Perovskite Solar Cells Based on FAMA-Perovskite-Cu:NiO Composites with 20.7% Efficiency and 80.5% Fill Factor”, Advanced Energy Materials 10, 2000967 (2020.06.14) (IF = 29.698)
Pramila Patil, Dilpreet Singh Mann, Umesh T. Nakate, Yoon-Bong Hahn, Sung-Nam Kwon, Seok-In Na, “Hybrid interfacial ETL engineering using PCBM-SnS2 for High-Performance p-i-n structured planar perovskite solar cells”, Chemical Engineering Journal 397, 125504 (2020) (IF = 16.744)
Umesh T. Nakate, Rafiq Ahmad, Pramila Patil, Y.T. Yu, Yoon-Bong Hahn, “Ultra thin NiO nanosheets for high performance hydrogen gas sensor device”, Applied Surface Science 506, 144971 (2020. 03. 15) (IF=7.392)
Tahmineh Mahmoudi, Yousheng Wang, Yoon-Bong Hahn, “SrTiO3/Al2O3-Graphene Electron Transport Layer for Highly Stable and Efficient Composites-Based Perovskite Solar Cells with 20.6 % Efficiency”, Advanced Energy Materials 10, 1903369 (2020.01.14) (IF =29.698)
Rafiq Ahmad, Nirmalya Tripathy, Ajit Khosla, Marya Khan, Prabhash Mishra, Waquar Akhter Ansari, Mansoor Ali Syed, and Yoon-Bong Hahn, “Review-Recent Advances in Nanostructured Graphitic Carbon Nitride as a Sensing Material for Heavy Metal Ions”, Journal of The Electrochemical Society 167, 037519 (2020.01.01) (IF=4.731)
Yousheng Wang, Tahmineh Mahmoudi, Won-Yeop Rho, Yoon-Bong Hahn, “Fully-ambient-air and antisolvent-free-processed stable perovskite solar cells with perovskite-based composites and interface engineering”, Nano Energy 64, 103964 (2019. 8) (IF = 19.069)
Kiesar Sideeq Bhat, Umesh T. Nakate, Jin-Young Yoo, Yousheng Wang, Tahmineh Mahmoudi, and Yoon-Bong Hahn, “Cost-effective Silver Ink for Printable and Flexible Electronics with Robust Mechanical Performance”, Chemical Engineering Journal 373, 355–364 (2019. 10.) (IF = 16.744)
Umesh T. Nakate, Rafiq Ahmad, Pramila Patil, Yousheng Wang, Kiesar Sideeq Bhat, Tahmineh Mahmoudi, Y.T. Yu, Eun-kyung Suh, Yoon-Bong Hahn, “Improved selectivity and low concentration hydrogen gas sensor application of Pd sensitized heterojunction n-ZnO/p-NiO nanostructures”, Journal of Alloys and Compounds 797, 456-464 (2019.8.15) (IF=3.779)
Umesh T. Nakate, Rafiq Ahmad, Pramila Patil, Kiesar Sideeq Bhat, Yousheng Wang, Tahmineh Mahmoudi, Y.T. Yu, Eun-kyung Suh,, Yoon-Bong Hahn, “High response and low concentration hydrogen gas sensing properties using hollow ZnO particles transformed from polystyrene@ZnO core-shell structures”, International Journal of Hydrogen Energy, 44 (29), 15677-15688 (2019.6.10) (IF=4.229)
Kiesar Sideeq Bhat, Umesh Tukaram Nakate, Jin-Young Yoo, Yousheng Wang, Tahmineh Mahmoudi, Yoon-Bong Hahn, “Nozzle-Jet-Printed Silver/Graphene Composite-Based Field-Effect Transistor Sensor for Phosphate Ion Detection”, ACS Omega 4 (5), 8373–8380 (2019).
Tahmineh Mahmoudi, Yousheng Wang, and Yoon-Bong Hahn, “Stability Enhancement in Perovskite Solar Cells with Perovskite/Silver−Graphene Composites in the Active Layer”, ACS Energy Letters 4, 235-241 (2019). (IF = 23.101)
Hwa-Young Yang, Won-Yeop Rho, Seul Ki Lee, Sang Hoon Kim and Yoon-Bong Hahn,“ TiO2 Nanoparticles/Nanotubes for Efficient Light Harvesting in Perovskite Solar Cells“, Nanomaterials 9(3), 326 (2019)
Rafiq Ahmad, Otto S. Wolfbeis, Yoon-Bong Hahn, Husam N. Alshareef, Luisa Torsi, Khaled N. Salama,” Deposition of nanomaterials: A crucial step in biosensor fabrication”, Materials Today Communications 17, 289–321 (2018).
Umesh T. Nakate, Gun Hee Lee, Rafiq Ahmad, Pramila Patil, Yoon-Bong Hahn, Y.T. Yu, Eun-kyung Suh, “Nano-bitter gourd like structured CuO for enhanced hydrogen gas sensor application”, Int. J. Hydrogen Energy 43, 22705-22714 (2018)
Umesh T. Nakate, Gun Hee Lee, Rafiq Ahmad, Pramila Patil, Dhanaji P. Bhopate, Y.B. Hahn, Y.T. Yu, Eun-kyung Suh, “Hydrothermal synthesis of p-type nanocrystalline NiO nanoplates for high response and low concentration hydrogen gas sensor application”, Ceramics International 44, 15721-15729 (2018)
Rafiq Ahmad, Nirmalya Tripathy, Min-Sang Ahn, Jin-Young Yoo, and Yoon-Bong Hahn, “Preparation of a Highly Conductive Seed Layer for Calcium Sensor Fabrication with Enhanced Sensing Performance,” ACS Sensor 3, 772-778 (2018. 3. 16) (IF=7.333)
Yousheng Wang, Tahmineh Mahmoudi, Hwa-Young Yang, Kiesar Sideeq Bhat, Jin-Young Yoo, Yoon-Bong Hahn, “Fully-ambient-processed mesoscopic semitransparent perovskite solar cells by islands-structure-MAPbI3-xClx-NiO composite and Al2O3/NiO interface engineering”, Nano Energy 49, 59–66 (2018, 7. 1.) (IF = 19.069)
Tahmineh Mahmoudi, Yousheng Wang, and Yoon-Bong Hahn, “Graphene and its derivatives for solar cells application”, Nano Energy 47, 51–65 (2018, 5. 1.) (IF= 19.069)
Min-Sang Ahn, Rafiq Ahmad, Kiesar Sideeq Bhat, Jin-Young Yoo, Tahmineh Mahmoudi, Yoon-Bong Hahn, “Fabrication of a solution-gated transistor based on valinomycin modified iron oxide nanoparticles decorated zinc oxide nanorods for potassium detection”, Journal of Colloid and Interface Science 518, 277-283 (2018. 5. 15) (IF = 9.9)
Min-Sang Ahn, Rafiq Ahmad, Jin-Young Yoo, Yoon-Bong Hahn, “Synthesis of manganese oxide nanorods and its application for potassium ion sensing in water”, Journal of Colloid and Interface Science 516, 364-370 (2018. 4. 15) (IF = 9.9)
Rafiq Ahmad, Tahmineh Mahmoudi, Min-Sang Ahn, Jin-Young Yoo, Yoon-Bong Hahn,” Fabrication of sensitive non-enzymatic nitrite sensor using silver-reduced graphene oxide nanocomposite”, Journal of Colloid and Interface Science 516, 67-75 (2018. 4. 15)
Rafiq Ahmad, Tahmineh Mahmoudi, Min-Sang Ahn, Yoon-Bong Hahn,” Recent advances in nanowires-based field-effect transistors for biological sensor applications”, Biosensors and Bioelectronics 100, 312-325 (2018. 2. 15) (IF = 12.6)
Kiesar Sideeq Bhat, Rafiq Ahmad, Jin-Young Yoo, Yoon-Bong Hahn, “Fully nozzle-jet printed non-enzymatic electrode for biosensing application”, Journal of Colloid and Interface Science 512, 480–488 (2018. 2. 15)
Da-Un-Jin Jung, Rafiq Ahmad, Yoon-Bong Hahn, “Nonenzymatic flexible field-effect transistor based glucose sensor fabricated using NiO quantum dots modified ZnO nanorods”, Journal of Colloid and Interface Science 512, 21–28 (2018. 2. 15)
Won-Yeop Rho, Ho-Sub Kim, Woo-Jae Chung, Jung Sang Suh, Bong-Hyun Jun, Yoon-Bong Hahn, “Enhancement of power conversion efficiency with TiO2 nanoparticles/nanotubes-silver nanoparticles composites in dye-sensitized solar cells”, Applied Surface Science 429, 23–28 (2018. 1. 31)
Rafiq Ahmad, Min-Sang Ahn and Yoon-Bong Hahn, “A Highly Sensitive Nonenzymatic Sensor Based on Fe2O3 Nanoparticle Coated ZnO Nanorods for Electrochemical Detection of Nitrite”, Advanced Materials Interfaces 4, 1700691 (2017, 11.23).10
Yousheng Wang, Tahmineh Mahmoudi, Won-Yeop Rho, Hwa-Young Yang, Seunghui Seo, Kiesar Sideeq Bhat, Rafiq Ahmad, Yoon-Bong Hahn, “Ambient-air-solution-processed efficient and highly stable perovskite solar cells based on CH3NH3PbI3-xClx-NiO composite with Al3O3/NiO interfacial engineering”, Nano Energy 40, 408–417 (2017.10.1). (IF = 19.069)
Kiesar Sideeq Bhat, Rafiq Ahmad, Jin-Young Yoo, Yoon-Bong Hahn, “Nozzle-jet printed flexible field-effect transistor biosensor for high performance glucose detection”, Journal of Colloid and Interface Science 506, 188-196 (2017. 11.15).
Rafiq Ahmad, Nirmalya Tripathy, Min-Sang Ahn, Kiesar Sideeq Bhat, Tahmineh Mahmoudi, Yousheng Wang, Jin-Young Yoo, Dae-Wook Kwon, Hwa-Young Yang & Yoon-Bong Hahn, “Highly Efficient Non-Enzymatic Glucose Sensor Based on CuO Modified Vertically-Grown ZnO Nanorods on Electrode”, Scientific Reports 7, 5715 (2017. 7. 18).
Rafiq Ahmad, Min-Sang Ahn, Yoon-Bong Hahn, “ZnO nanorods array-based field-effect transistor biosensor for phosphate detection”, Journal of Colloid and Interface Science 494, 292–297 (2017. 7. 15).
Rafiq Ahmad, Kiesar Sideeq Bhat, Min-Sang Ahn and Yoon-Bong Hahn, “Fabrication of a robust and highly sensitive nitrate biosensor based on directly grown zinc oxide nanorods on a silver electrode”, New Journal of Chemistry 41, 10992-10997 (2017. 8. 22).
Rafiq Ahmad, Nirmalya Tripathy, Min-Sang Ahn, Yoon-Bong Hahn, “Solution Process Synthesis of High Aspect Ratio ZnO Nanorods on Electrode Surface for Sensitive Electrochemical Detection of Uric Acid”, Scientific Reports 7, 46475 (2017. 4.18)
Rafiq Ahmad, Min-Sang Ahn, Yoon-Bong Hahn “Fabrication of a non-enzymatic glucose sensor field-effect transistor based on vertically-oriented ZnO nanorods modified with Fe2O3”, Electrochemistry Communications 77, 107–111 (2017. 4.).
Rafiq Ahmad, Nirmalya Tripathy, Min-Sang Ahn, Yoon-Bong Hahn, “Highly stable hydrazine chemical sensor based on vertically-aligned ZnO nanorods grown on electrode”, Journal of Colloid and Interface Science 494, 153–158 (2017. 5.15).
Rafiq Ahmad, Nirmalya Tripathy, Min-Sang Ahn, Yoon-Bong Hahn, “Development of highly-stable binder-free chemical sensor electrodes for p-nitroaniline detection”, Journal of Colloid and Interface Science 494, 300–306 (2017.5.15).
Rafiq Ahmad and Yoon-Bong Hahn, “FET biosensors based on carbon nanotubes and graphene”, Science Advances Today 2, 25241 (2016)
Nirmalya Tripathy, Rafiq Ahmad, Hyeon Kuk, Yoon-Bong Hahn, Gilson Khang,” Mesoporous ZnO nanoclusters as an ultra-active photocatalyst”, Ceramics International 42 (2016) 9519–9526.
Nirmalya Tripathy, Rafiq Ahmad, Hyeon Kuk, Dae Hoon Lee, Yoon-Bong Hahn, Gilson Khang, “Rapid methyl orange degradation using porous ZnO spheres photocatalyst”, Journal of Photochemistry & Photobiology, B: Biology 161 (2016) 312–317
Tahmineh Mahmoudi, Seunghui Seo, Hwa-Young Yang, Won-Yeop Rho, Yousheng Wang, Yoon-Bong Hahn, “Efficient Bulk Heterojunction Hybrid Solar Cells with Graphene-Silver Nanoparticles Composite Synthesized by Microwave-Assisted Reduction”, Nano Energy 28, 179-187 (2016. 10.) (IF = 19.069)
Yousheng Wang, Won-Yeop Rho, Hwa-Young Yang, Tahmineh Mahmoudi, Seunghui Seo, Dong-Heon Lee, Yoon-Bong Hahn, “Air-Stable, Hole-Contuctor-Free High Photocurrent Perovskite Solar Cells with CH3NH3PbI3-NiO Nanoparticles Composite”, Nano Energy 27, 535-544 (2016. 9.) (IF = 19.069)
Mohammad Vaseem, Seul-Ki Lee, Joong-Gon Kim and Yoon-Bong Hahn, “Silver-Ethanolamine-Formate Complex Based Transparent and Stable Ink: Electrical Assessment with Microwave Plasma vs Thermal Sintering”, Chemical Engineering Journal 306, 796-805 (2016. 12.15.) (IF = 16.744)
Kiesar Sideeq Bhat, Rafiq Ahmad, Yousheng Wang and Yoon-Bong Hahn, “Low-temperature sintering highly conductive silver ink for flexible electronics”, Journal of Materials Chemistry C, 4, 8522-8527 (2016. 9. 28) (IF=7.059)
Muhammad Yasir Khan, Rafiq Ahmad, Gun Hee Lee, Eun-Kyung Suh, and Yoon-Bong Hahn,” Effect of Annealing Atmosphere on the Optical and Electrical Properties of Al-Doped ZnO Films and ZnO Nanorods Grown by Solution Process”, Sci. Adv. Mater. 8, 1–7 (2016)
Nirmalya Tripathy, Rafiq Ahmad, Seung Hyuck Bang, Gilson Khang, Jiho Min, Yoon-Bong Hahn, “Outstanding Antibiofilm Features of Quanta-CuO Film on Glass Surface”, ACS Applied Materials and Interfaces 8, 15128-15137 (2016. 6. 22). (IF=8.758)
Rafiq Ahmad, Nirmalya Tripathy, Muhammad Yasir Khan, Kiesar Sideeq Bhat, Min-Sang Ahn, Gilson Khang, Yoon-Bong Hahn, “Hierarchically assembled ZnO nanosheets microspheres for enhanced glucose sensing performances”, Ceramics International 42, 13464-13469 (2016).
Rafiq Ahmad, Nirmalya Tripathy, Muhammad Yasir Khan, Kiesar Sideeq Bhat, Min-Sang Ahn, Yoon-Bong Hahn, “Ammonium ion detection in solution using vertically grown ZnO nanorod based field-effect transistor”, RSC Advances 6, 54836-54840 (2016)
Nirmalya Tripathy, Rafiq Ahmad, Hyeon Kuk, Yoon-Bong Hahn, Gilson Khang, “Mesoporous ZnO nanoclusters as an ultra-active photocatalyst”, Ceramics International 42, 9519-9526 (2016).
Nirmalya Tripathy, Rafiq Ahmad, Hyeon Kuk, Dae-Hoon Lee, Yoon-Bong Hahn, Gilson Khang, “Rapid methyl orange degradation using porous ZnO spheres photocatalyst”, Journal of Photochemistry & Photobilogy, B: Biology 161, 312-317 (2016).
Won-Yeop Rho, Mohammed Vaseem, Hwa-Young Yang, Tahmineh Mahmoudi, Seul-Ki Lee and Yoon-Bong Hahn, “Effect of Structural Shapes of Scattering Layer on Energy Conversion Efficiency in Dye-Sensitized Solar Cells”, Science of Advanced Materials 8, 236-240 (2016)
Yousheng Wang, Muhammad Yasir Khan, Seul-Ki Lee, Yong-Kyu Park, and Yoon-Bong Hahn, “Parametric Study of Nozzle-Jet Printing for Directly Drawn ZnO Field-Effect Transistors”, Science of Advanced Materials 8, 148-155 (2016. 1)
Rafiq Ahmad, Nirmalya Tripathy, Jin-Ho Park and Yoon-Bong Hahn, “A comprehensive biosensor integrated with a ZnO nanorod FET array for selective detection of glucose, cholesterol and urea”, Chem. Comm. 51, 11968-11971 (2015. 7. 14). IF=6.834
Muhammad Yasir Khan, Mohammad Vaseem, Rafiq Ahmad, Ahmad Umar, Sang-Hoon Kim, A. Al-Hajry, and Yoon-Bong Hahn, “Optical and Electrical Properties of Li-Doped CuO Quantum-Dots Films by Solution Process”, Science of Advanced Materials 7 (11), 2481-2485 (2015. 11)
Tae Hoon Seo, As Hyun Rark, Sungchan Park, Yong Hwan Kim, Gun Hee Lee, Myung Jong Kim, Mun Seok Jeong, Young Hee Lee, Yoon-Bong Hahn, Eun-Kyung Suh, “Direct growth of GaN layer on carbon nanotube-graphene hybrid structure and its application for light emitting diodes”, Scientific Reports 5: 7747 (2015. 1. 19)
Seung Jin Han, Zhuping Fei, K.D.G.I. Jayawardena, Michail J. Beliatis, Yoon-Bong Hahn, A.A.D.T. Adikaari, Martin J. Heeney, S. Ravi P. Silva, “ZnO hybrid photovoltaics with variable side-chain lengths of thienothiophene polymer”, Thin Solid Films 576, 38–41(2015. 2. 2) IF=1.759
Rafiq Ahmad, Nirmalya Tripathy, Yoon-Bong Hahn, Ahmad Umar, Ahmed A. Ibrahim and S. H. Kim, “A robust enzymeless glucose sensor based on CuO nanoseed modified electrodes”, Dalton Transactions 44 (28), 12488-12492 (2015. 7. 28) IF=4.197
Nirmalya Tripathy, Rafiq Ahmad, Hyun Ah Ko, Gilson Khang and Yoon-Bong Hahn, “Enhanced anticancer potency using an acid-responsive ZnO-incorporated liposomal drug-delivery system”, Nanoscale 7(9), 4088-4096 (2015. 3. 4). IF = 6.739
Nirmalya Tripathy, Rafiq Ahmad, Hyun Ah Ko, Gilson Khang and Yoon-Bong Hahn, “Multi-synergetic ZnO platform for high performance cancer therapy”, Chem. Comm. 51(13), 2585-2588 (2015. 2. 14). IF = 6.718
Rafiq Ahmad, Nirmalya Tripathy, Na Keum Jang, Gilson Khang,Yoon-Bong Hahn, “Fabrication of highly sensitive uric acid biosensor based on directly grown ZnO nanosheets on electrode surface”, Sensors and Actuators B 206, 146–151 (2015.1) (IF = 3.840)
Hwa-Young Yang, Rafiq Ahmad, Mohammad Vaseem, Won-Yeop Rho, Nirmalya Tripathy, Dae-Geun Choi, and Yoon-Bong Hahn, “Nanoimprinted ZnO and ZnO Quantum Dots Embedded SiO2 Layers for Inverted Bulk Heterojunction Solar Cells,” Science of Advanced Materials 7, 1253-1257 (2015. 7)
Nirmalya Tripathy, Rafiq Ahmad, Jeong Eun Song, Hyun Ah Ko, Yoon-Bong Hahn, Gilson Khang, “Photocatalytic degradation of methyl orange dye by ZnO nanoneedle under UV irradiation”, Materials Letters 136, 171–174 (2014).
Won-Yeop Rho, Ho-Sub Kim, Sang Hun Lee, Seunho Jung, Jung Sang Suh, Yoon-Bong Hahn, Bong-Hyun Jun, “Front-illuminated dye-sensitized solar cells with Agnanoparticle-functionalized freestanding TiO2nanotube arrays”, Chemical Physics Letters 614, 78–81 (2014. 10. 20).
Nirmalya Tripathy, Rafiq Ahmad, Eun Young Kim, Gilson Khang and Yoon-Bong Hahn, “Cholesterol biosensing based on highly immobilized ChOx on ZnO hollow nanospheres”, RSC Advances 4, 46049–46053 (2014. 8. 18)
Ahmad Umar, Rafiq Ahmad, Ali Al-Hajry, Sang Hoon Kim, Mohamed Eisa Abaker and Yoon-Bong Hahn, “Spruce branched α-Fe2O3 nanostructures as potential scaffolds for a highly sensitive and selective glucose biosensor”, New J. Chem. 38, 5873-5879 (2014. 9.16).
Das, Daan Liu, Chel-Jong Choi and Yoon-Bong Hahn, “Electrical Properties of SrTiO3 and SrTiO3/NiO Thin Films in Heterojunction Devices”, Science of Advanced Materials 6(8), 1888-1891(2014.8.1)
Nandanapalli Koteeswara Reddy, Mudusu Devika and Yoon-Bong Hahn,” Excellent enhancement in the device performance of nitrogen plasma treated ZnO nanorods based diodes”, Nano Convergence 1, 26 (2014)
Rizwan Khan, Rafiq Ahmad, Prabhakar Rai, Lee-Woon Jang, Jin-Hyeon Yun, Yeon-Tae Yu, Yoon-Bong Hahn, In-Hwan Lee, “Glucose-assisted synthesis of Cu2O shuriken-like nanostructures and their application as nonenzymatic glucose biosensors”, Sensors and Actuators B 203, 471–476 (2014).
Ahmad Umar, Rafiq Ahmad, S.W. Hwang, S.H. Kim, A. Al-Hajry, Y.B. Hahn, “Development of Highly Sensitive and Selective Cholesterol Biosensor Based on Cholesterol Oxidase Co-Immobilized with -Fe2O3 Micro-Pine Shaped Hierarchical Structures”, Electrochimica Acta 135, 396–403 (2014. 7. 20).
Yong-Kyu Park, Won-Yeop Rho, Tahmineh Mahmoudi, and Yoon-Bong Hahn, “Lateral growth of ZnO nanorod arrays in polyhedral structures for high on-current field-effect transistors”, Chem. Commun. 50, 10502-10505 (2014.9.15)
Tahmineh Mahmoudi, Won-Yeop Rho, Hwa-Young Yang, S. Ravi P. Silva, Yoon-Bong Hahn, “Highly Conductive and Dispersible Graphene and Its Application for P3HT-Based Hybrid Solar Cells,” Chem. Commun. 50, 8705-8708 (2014. 8.14)
Nirmalya Tripathy, Rafiq Ahmad, Seung Hyuck Bang, Jiho Min, and Yoon-Bong Hahn, ”Tailored lysozyme-ZnO nanoparticle conjugates as nanoantibiotics”, Chem. Commun. 50, 9298-9301 (2014. 8.25)
Nirmalya Tripathy, Tae-Keun Hong, Ki-Tae Ha, Han-Sol Jeong, Yoon-Bong Hahn, “Effect of ZnO Nanoparticles Aggregation Propensity on Toxicity in RAW 264.7 Murine Macrophage”, J. Hazardous Materials 270, 110-117 (2014. 4. 15).
Y. Sun, H. Guo, L. Jin, Y.-H. Cho, E.-K. Suh, H.J. Lee, R.J. Choi, Y.B. Hahn, “Optical excitation study on the efficiency droop behaviors of InGaN/GaN multiple-quantum-well structures”, Applied Physics B: Lasers and Optics 114, 551-555 (2014. 3. 1)
Rafiq Ahmad, Nirmalya Tripathy, Yoon-Bong Hahn, “Highly stable urea sensor based on ZnO nanorods directly grown on Ag/Glass electrodes”, Sensors and Actuators B, 194, 290-295 (2014. 4)
Rafiq Ahmad, Nirmalya Tripathy, Da-Un-Jin Jung, and Yoon Bong Hahn, “Highly sensitive hydrazine chemical sensor based on ZnO nanorods field-effect transistor”, Chem. Commun., 50(15), 1890-1893 (2014. 2. 21).
Rafiq Ahmad, Nirmalya Tripathy, Sang Hoon Kim, Ahmad Umar, A. Al-Hajry, and Yoon-Bong Hahn, “High performance cholesterol sensor based on ZnO nanotubes grown on Si/Ag electrodes”, Electrochemistry Communications 38, 4–7 (2014).
Rafiq Ahmad, Nirmalya Tripathy, Yoon-Bong Hahn, “ZnO nanoneedles on silver electrode for highly efficient glucose biosensor”, Journal of Nanoscience Letters 2014, 4: 18.
Mohammad Vaseem, Rafiq Ahmad, Nirmalya Tripathy, and Yoon-Bong Hahn, “Wide linear-range detecting non-enzymatic glucose biosensor based on CuO nanoparticles inkjet-printed on electrodes”, Analytical Chemistry 85(21), 10448−10454 (2013)
Touseef Amna, Hoa Van Ba, M. Vaseem, M. Shamshi Hassan, Myung-Seob Khil, Y. B. Hahn, Hak-Kyo Lee, I. H. Hwang, “Apoptosis induced by copper oxide quantum dots in cultured C2C12 cells via caspase 3 and caspase 7: a study on cytotoxicity ssessment”, Appl. Microbiol. Biotechnol. 97, 5545–5553 (2013).
Prabhakar Rai, Rizwan Khan, Rafiq Ahmad, Yoon-Bong Hahn, In-Hwan Lee, Yeon-Tae Yu, “Gas sensing properties of single crystalline ZnO nanowires grown by thermal evaporation technique”, Current Applied Physics 13, 1769-1773 (2013).
Rafiq Ahmad, Nirmalya Tripathy, Yoon-Bong Hahn, “ZnO nanoneedles on silver electrode for highly efficient glucose biosensor”, J. Nanoscience Letters 4, 18 (2013)
Young Jin Lim, Young Eun Choi, Shin-Woong Kang, Dae Young Kim, Seung Hee Lee and Yoon-Bong Hahn, “Vertical Alignment of Liquid Crystal with Zinc Oxide Nanorods,” Nanotechnology 24, 345702 (2013)
N. Koteeswara Reddy, M. Devika, Yoon-Bong Hahn, K. R. Gunasekhar, “Impact of chemical treatment on the surface, structure, optical and electrical properties of SnS thin films”, Applied Surface Science 268, 317-322 (2013)
Seung Jin Han, A.A.D.T. Adikaari, K.D.G.I. Jayawardena, N.A. Nismy, Yoon Hak Kim, Jeong Won Kim, Yoon-Bong Hahn, S.R.P. Silva, “Band alignment effects at the metal electrode interface of poly(3-hexylthiophene):zinc oxide hybrid photovoltaics”, Applied Physics Letters 102 (8), 081607 (2013)
Min Ho Lee, Jong-Soo Rhyee, Mohammad Vaseem, Yoon-Bong Hahn, Su-Dong Park, Hee Jin Kim, Sung-Jin Kim, Hyeung Jin Lee, Chilsung Kim, “Thermoelectric properties of SrTiO3 nano-particles dispersed indium selenide bulk composites”, Applied Physics Letters 102 (22), 223901 (2013)
Tae-Keun Hong, Nirmalya Tripathy, Hyun-Jin Son, Ki-Tae Ha, Han-Sol Jeong, and Yoon-Bong Hahn, “A comprehensive in vitro and in vivo study of ZnO nanoparticles toxicity”, J. Materials Chemistry B, 1 (23), 2985-2992 (2013)
Mohammad Vaseem, Nirmalya Tripathy, Gilson Khang and Yoon-Bong Hahn, ”Green Chemistry of Glucose-Capped Ferromagnetic hcp-Nickel Nanoparticles and Their Reduced Toxicity”, RSC Advances, 3 (25), 9698 – 9704 (2013. 7).
Jin-Hwan Kim, Haslin Kim, Mohammed Vaseem, and Yoon-Bong Hahn, “Effect of Gas Atmosphere on Ag-Embedded ZnO Nanofilms: Structural, Optical and Electrical Properties”, J. Nanosci. Nanotechnol. 13, 6860-6865 (2013).
Mohammad Vaseem, A-Ra Hong, Ryun-Tak Kim, and Yoon-Bong Hahn, “Copper Oxide Quantum Dot Ink for Inkjet-Driven Digitally Controlled High Mobility Field Effect Transistors”, Journal of Materials Chemistry C, 1(11), 2112-2120 (2013)
Sang Hoon Kim, Jin-Hwan Kim, S.R.P. Silva, and Y. B. Hahn, ”Conjugated Polymer/Sn-Doped ZnO Nanowires for Heterojunction Hybrid Solar Cells”, Science of Advanced Materials 5, 499-504 (2013).
Nirmalya Tripathy, Yun Lan, Jenny K. W. Lam, P. M. Vanhoutte, and Yoon-Bong Hahn, “Comprehensive study on the toxicology of surface-coated ZnO nanoparticles in human alveolar adenocarcinoma (A549) cells”, Science of Advanced Materials 5, 421-429 (2013).
Rafiq Ahmad, Nirmalya Tripathy, Yoon-Bong Hahn, “High-performance cholesterol sensor based on the solution-gated field effect transistor fabricated with ZnO nanorods”, Biosensors and Bioelectronics 45, 281–286 (2013).
Soumen Das, Daan Liu, Jong Bae Park, Yoon-Bong Hahn, “Metal-ion doped p-type TiO2 thin films and their applications for heterojunction devices”, JALCOM 553, 188-193 (2013).
H. Guo, Y. Sun, Y.-H Cho, E.-K. Suh, H.-J. Lee, R.-J. Choi, Y.-B. Hahn, “Phase separations in graded-indium content InGaN/GaN multiple quantum wells and its function to high quantum efficiency”, Journal of Semiconductors 33 (5), art. no. 053001 (2013).
Soumen Das, Daan Liu, Vallivedu Janardhanam, Chel-Jong Choi, and Yoon-Bong Hahn, “Stoichiometry-controlled growth of BaxSr1-xTiO3 thin films and their electrical behavior in heterojunction assemblies”, RSC Advances, 2 (27), 10255 – 10261 (2012).
Yoon-Bong Hahn, Rafiq Ahmad, Nirmalya Tripathy, ”Chemical and biological sensors based on metal oxides nanostrcutures”, Chemical Communications 48 (84), 10369 – 10385 (2012). [Feature article]
Rafiq Ahmad, Nirmalya Tripathy, Jin Hwan Kim, and Yoon-Bong Hahn, ”Highly selective wide linear-range detecting glucose biosensors based on aspect-ratio controlled ZnO nanorods directly grown on Ag electrodes”, Sensors and Actuators B: Chemical 174, 195-201 (2012).
Rahul Sharma, Jin Hwan Kim, Yoon-Bong Hahn, “Solution-Processed Solid-State Solar Cells of ZnO/CuO Core/Shell Nanrods”, Science of Advanced Materials 4, 978-984 (2012)
Mohammad Vaseem, Kil Mok Lee, and Yoon-Bong Hahn, “Mesoporous NiO Nanoclusters Through Calcination of PS@Ni(OH)2 Core-Shells Prepared by Esterification of Nickel Acetate”, Science of Advanced Materials 4(7),687-694 (2012)[Cover paper]
Mohammad Vaseem, Kil Mok Lee, Yoon-Bong Hahn, ”Inkjet Printed Fractal-Connected Electrodes with Silver Nanoparticles Ink”, ACS Applied Materials & Interfaces 4, 3300-3307 (2012).
M. Vaseem, K. M. Lee, Jin-Koog Shin, and Yoon-Bong Hahn, “Synthesis of ZnO Nanoparticles and Their Ink-Jetting Behavior”, Journal of Nanoscience and Nanotechnology 12(3), p.2380-2386 (2012)
Rahul Sharma and Yoon-Bong Hahn, “Nanocrystalline Thin Films of Cu, CuO and Cu2O Synthesized by Electroless Deposition”, Science of Advanced Materials 4(1), p.23-28 (2012)
Rafiq Ahmad, N. Tripathy, and Yoon-Bong Hahn, ”Wide linear-range detecting high sensitivity cholesterol biosensors based on aspect-ratio controlled ZnO nanorods grown on silver electrodes”, Sensors and Actuators B: Chemical 169, 382– 386 (2012)
Hyun-Wook Ra, Jin-Tae Kim, Rizwan Khan, Deepti Sharma, Yeong-Geun Yook, Yoon-Bong Hahn, Jin-Ho Park, Dae-Ghon Kim, and Yeon-Ho Im, “Robust and Multifunctional Nanosheath for Chemical and Biological Nanodevices”, Nano Letters 12, 1891-1897 (2012).
Ahsanulhaq Qurashi1, Jin Hwan Kim, Yoon-Bong Hahn, “Direct Fabrication of ZnO Nanorods Array On-Chip System in Solution and Their Electrical Properties”, Electrochemistry Communications, 18, 88-91 (2012).
Han-Seok Choi, Mohammad Vaseem, Jin Hwan Kim, Yoon-Bong Hahn, “Growth of High Aspect Ratio ZnO Nanorods by Solution Process: Effect of Polyethyleneimine”, Journal of Solid State Chemistry, 189, 25-31 (2012)
Nirmalya Tripathy, Rafiq Ahmad, Han-Sol Jeong, and Yoon-Bong Hahn, ”Time-Dependent Control of Hole-Opening Degree of Porous ZnO Hollow Microspheres”, Inorganic Chemistry 51, 1104−1110 (2012).
Ahsanulhaq Qurashi, Jin Hwan Kim, Yoon-Bong Hahn, “Etch-Free Selective Area Growth of Well-Aligned ZnO Nanorod Arrays by Economical Polymer Mask for Large-area Solar Cell Applications,” Solar Energy Materials and Solar Cells, 98, 476-481 (2012)
Yoon-Bong Hahn, “Zinc Oxide Nanostructures and Their Applications”, Korean J. Chem. Eng., 28(9), 1797-1813 (2011)
Soumen Das, Dae-Young, Han-Seok Choi, Yoon-Bong Hahn, “Studying trivalent/ bivalent metal ion doped TiO2 as p-TiO2 in bipolar heterojunction devices”, Materials Chemistry and Physics 129, 887-891 (2011).
Soumen Das, Jin-Hwan Kim, Yong-Kyu Park, Yoon-Bong Hahn, “Solution processed Ni-doped TiO2 p-type channel in field effect transistor assembly with <10 nm thin Ba0.5Sr0.5TiO3 dielectric layer”, Appl. Phys. Lett. 98, 202102 (2011).
Yong Kyu Park, Han Seok Choi, Jin-Hwan Kim, Jeong-Hyun Kim, Yoon-Bong Hahn, “High Performance Field-Effect Transistors Fabricated with Laterally-Grown ZnO Nanorods in Solution”, Nanotechnology 22, 185310 (2011. 3. 22)
Soumen Das, Dae-Young Kim, Cheol-Min Choi and Yoon-Bong Hahn, “Influence of aqueous hexamethylenetetramine on the morphology of self-assembled SnO2 nanocrystals”, Materials Research Bulletin 46, 609–614 (2011).
Soumen Das, Jin-Hwan Kim, Han Seok Choi, Yong-Kyu Park, and Yoon-Bong Hahn, “Interfacial and electrical properties of solution processed p-TiO2 in heterojunction devices”, Electrochemistry Communications 13, 350–354 (2011).
Mohammad Vaseem, Dae Young Kim, Kil Mok Lee, and Yoon-Bong Hahn, “Parametric study of cost-effective synthesis of crystalline copper nanoparticles and their crystallographic characterization”, Materials Chemistry and Physics, 125 (2011) 334-341.
Soumen Das, Dae-Young Kim, Cheol-Min Choi and Y. B. Hahn, “Structural evolution of SnO2 nanostructure from core-shell faceted pyramids to nanorods and its gas sensing properties,” J. Crystal Growth 314, 171-179 (2011).
Q. Ahsanulhaq, J. H. Kim, J. S. Lee, and Y.B. Hahn, ”Electrical and Gas Sensing Properties of ZnO Nanorod Arrays Directly Grown on a Four-Probe Electrode System”, Electrochemistry Communications 12, 475-478 (2010).
Q. Ahsanulhaq, Jin Hwan Kim, Jeong Hyun Kim, and Y. B. Hahn,”Seedless Pattern Growth of Quasi-Aligned ZnO Nanorod Arrays on Cover Glass Substrates in Solution”, Nanoscale Research Letters 5, 669-674 (2010).
Q. Ahsanulhaq, J. H. Kim, and Y.B. Hahn, “Immobilization of angiotensin II and bovine serum albumin on strip-patterned ZnO nanorod arrays”, J Nanoscience & Nanotechnology 10, 4159-4165 (2010)
A. Qurashi, J.H.Kim, Y.B.Hahn, “Density-Controlled selective growth of well-aligned ZnO nanorod arrays by a hybrid approach”, Superlattices and Microstructures 48, 162-169 (2010).
Soumen Das, Dae-Young Kim, Cheol-Min Choi and Y. B. Hah, “Heterojunction bipolar assembly with CrxTi1-xO2 thin films and vertically aligned ZnO nanorods”, Materials Chemistry and Physics 124, 704-708 (2010)
M. Devika, N. Koteeswara Reddy, M. Prashantha, K. Ramesh, S. Venkatramana Reddy,Y. B. Hahn, and K. R. Gunasekhar, “The physical properties of SnS films grown on lattice-matched and amorphous substrate”, Phys. Status Solidi A 207, No. 8, 1864–1869 (2010).
Sang Hoon Kim, Cheol Min Choi, Kil Mok Lee, and Yoon-Bong Hahn, “Amorphous carbon nitride thin films as hard mask material grown by plasma enhanced chemical vapor deposition at room temperature”, Synthetic Metals 160, 2442-2446 (2010).
Y. K. Park, A. Umar, J.-S. Kim, H. Y. Yang, J. S. Lee, Yoon-Bong Hahn, “Single ZnO nanowire based high performance field effect transistors”, J. Nanoscience and Nanotechnology 9, 5839-5844 (2009).
Y.K. Park, A. Umar, E. W. Lee, D. M. Hong, Yoon-Bong Hahn, “Single ZnO nanobelt based field effect transistors”, J. Nanoscience and Nanotechnology 9, 5745-5751 (2009).
Q. Ahsanulhaq, S.H. Kim, Y.B. Hahn, “Hexagonally patterned selective growth of well-aligned ZnO nanorod arrays”, J. Alloys and Compoundse 484, 17-20 (2009)
A. Umar, A. Al-Hajry, Y. B. Hahn, D. H. Kim, “Rapid synthesis and dye-sensitized solar cell applications of hexagonal-shaped ZnO nanorods”, Electrochimica Acta 54, 5358-5362 (2009).
A. Umar, M. M. Rahman, Yoon-Bong Hahn, “ZnO Nanords Based Hydrazine Sensors”, J. Nanoscience and Nanotechnology 9, 4686-4691 (2009).
A. Umar, C. Ribeiro, A. Al-Hajry, Y. Masuda, Y. B. Hahn, “Growth of highly C-axis-oriented ZnO nanorods on ZnO/glass substrate: Growth mechanism, structural, and optical properties”, J. Phys. Chem. C 113, 14715-14720 (2009).
Ahmad Umar, M.M. Rahman, Yoon-Bong Hahn, “MgO polyhedral nanocages and nanocrystals based glucose biosensor”, Electrochemistry Communications 11, 1353-1357 (2009).
S.H. Kim, Ahmad Umar, Y.K. Park, J.-H. Kim, E.W. Lee, Y.B. Hahn, “Non-catalytic growth of high-aspect-ratio Sb-doped ZnO nanowires by simple thermal evaporation process: Structural and optical properties”, J. Alloys and Compounds 479, 290-293 (2009).
A. Al-Hajry, A. Umar, Y. B. Hahn, D. H. Kim, “Growth, properties and dye-sensitized solar cells – applications of ZnO nanorods grown by low-temperature solution process”, Superlattices and Microstructures 45, 529-534 (2009).
Q. Ahsanulhaq, S.H. Kim, Y.B.Hahn, “A Templateless Surfactant-free Seedless Aqueous Route to Single Crystalline ZnO Nanowires Synthesis”, J. Physics and Chemistry of Solids 70, 627-631 (2009).
Ahmad Umar, M. M. Rahman, A. Al-Hajry, Y. B. Hahn, “Highly-sensitive cholesterol biosensor based on well-crystallized flower-shaped ZnO nanostructures”, TALANTA, 78, 284-289 (2009).
Ahmad Umar, Y. K. Park, and Y. B. Hahn, “High Aspect-Ratio ZnO Nanowires Based Nanoscale Field Effect Transistors”, J. Nanoscience and Nanotechnology 9, 2692-2697 (2009).
Ahmad Umar, M.M. Rahman, and Y. B. Hahn, “Ultra-sensitive hydrazine chemical sensor based on high-aspect-ratio ZnO nanowires”, TALANTA, 77, 1376-1380 (2009).
Ahmad Umar, M. M. Rahman, A. Al-Hajry, and Y. B. Hahn, “Enzymatic glucose biosensor based on flower-shaped copper oxide nanostructures composed of thin nanosheets”, Electrochemistry Communications 11, 278-281 (2009).
N. Koteeswara Reddy, Q. Ahsanulhaq, and Y. B. Hahn, “Influence of RTA treatment on the physical properties of well-aligned ZnO nanorods”, Physica E: Low-Dimensional Systems and Nanostructures 41, 368-372 (2009).
Ahmad Umar, M.M. Rahman, Mohammad Vaseem, Yoon-Bong Hahn, “Ultra-sensitive cholesterol biosensor based on low-temperature grown ZnO nanoparticles”, Electrochemistry Communications 11, 118–121 (2009).
Y. K. Park, Ahmad Umar, S. H. Kim, Y.-B. Hahn, “Solution Grown Ultra-Violet Emitting Quasi-Aligned ZnO Nanotubes”, J. Nanoscience and Nanotechnology 8, 6349-6354 (2008)
Ahmad Umar, A. Al-Hajry, S. Al-Heniti and Y-B. Hahn, “Hierarchical ZnO Nanostructures: Growth and Optical Properties”, J. Nanoscience and Nanotechnology 8, 6355-6360 (2008)
Y. K. Park, Ahmad Umar, S. H. Kim, J.-H. Kim, E.W. Lee, M. Vaseem, and Y.-B. Hahn, “Comparison Between the Electrical Properties of ZnO Nanowires Based Field Effect Transistors Fabricated by Back- and Top-Gate Approaches”, J. Nanoscience and Nanotechnology 8, 6010–6016 (2008).
M. Vaseem, Ahmad Umar, Yoon-Bong Hahn, “Low-Temperature Growth and Properties of CuO Structures Prepared by Aqueous Solution Process”, J. Nanoscience and Nanotechnology 8, 5511–5515 (2008).
M. Vaseem, A. Umar, Y. B. Hahn, D. H. Kim, K. S. Lee, J. S. Jang, J. S. Lee, “Flower-shaped CuO nanostructures: Structural, photocatalytic and XANES studies”, Catalysis Communications 10, 11–16 (2008).
Ahmad Umar and Yoon-Bong Hahn, “Ultraviolet-Emitting ZnO Nanostructures on Steel Alloy Substrate: Growth and Properties”, Crystal Growth and Design, 8 (8), 2741-2747 (2008).
Seung-Yong Lee, Ahmad Umar, Duk-Il Suh, Ji-Eun Park, Yoon-Bong Hahn and Sang-Kwon Lee, “Synthesis of ZnO Nanowires and their Subsequent Use in High-Current Field-Effect Transistors Formed by Dielectrophoresis Alignment” Physica E 40, 866-872 (2008)
N. Koteeswara Reddy, Q. Ahsanulhaq, and Y. B. Hahn, “Fabrication of zinc oxide nanorod based heterojunction devices using simple and economic chemical solution method”, Appl. Phys. Lett. 93, 083124 (2008).
Mohammad Vaseem, Ahmad Umar, Sang Hoon Kim, and Yoon-Bong Hahn, “Low-Temperature Synthesis of Flower-Shaped CuO Nanostructures by Solution Process: Formation Mechanism and Structural Properties”, J. Phys. Chem. C, 112, 5729-5735 (2008).
H. -W. Ra, K. S. Choi, J. H. Kim, Y. B. Hahn, and Y. H. Im, “Fabrication of ZnO Nanowires Using Nanoscale Spacer Lithography for Gas Sensors”, Small, 4(8), 1105 (2008).
A. Al-Hajry, A. Umar, M. Vaseem, M. S. Al-Assiri, F. El-Tantawy, M. Bououdina, S. Al-Heniti, Y. B. Hahn, “Low-temperature growth and properties of flower-shaped beta-Ni(OH)2 and NiO structures composed of thin nanosheets networks”, Superlattices and Microstructures 44, 216-222 (2008).
A. Umar, S. H. Kim, A. Al-Hajry, J. H. Kim, Y. B. Hahn, “Temoperature-dependent non-catalytic growth of ultraviolet-emitting ZnO nanostructures on silicon by thermal evaporation process”, Journal of Alloys and Compounds 463, 516-521 (2008).
S. H. Kim, P. H. Sher, Y. B. Hahn and J. M. Smith, “Luminescence from single CdSe nanocrystals embedded in ZnO thin films using atomic layer deposition”, Nanotechnology 19, 365202 (2008).
Ahmad Umar, S. H. Kim, J. H. Kim, A. Al-Hajry, Y. B. Hahn, “Temperature-dependant non-catalytic growth of ultraviolet-emitting ZnO nanostructures on silicon substrate by thermal evaporation process”, Journal of Alloys and Compounds 463, 516-521 (2008).
Ahmad Umar, Young Jin Choi, E. -K. Suh, A. Al. Hajry and Yoon Bong Hahn, “Evolution of ZnO nanostructures by non-catalytic growth process on steel alloy substrate: Structural and Optical properties”, Current Applied Physics 8, 798-801 (2008)
Ahmad Umar, S. H. Kim and Yoon Bong Hahn, “Formation of hierarchical ZnO nanostructures “nanocombs”: Growth mechanism, structural and optical properties”, Current Applied Physics 8, 793-797 (2008).
Q. Ahsanulhaq, J. H. Kim, N. K. Reddy, and Y. B. Hahn, “Growth mechanism and characterization of rose-like microspheres and hexagonal microdisks of ZnO grown by surfactant-free solution method”, J. Ind. Eng. Chem. 14, 578–583 (2008).
Ahmad Umar, S. H. Kim, B. Karunagaran, E. K. Suh, and Y. B. Hahn, “Growth and optical properties of aligned hexagonal ZnO nanoprisms on silicon substrate by non-catalytic thermal evaporation“, Inorganic Chemistry 47, 4088-4094 (2008)
Ahmad Umar, Yoon-Bong Hahn, “Large-quantity synthesis of ZnO hollow objects by thermal evaporation: Growth mechanism, structural and optical properties”, Applied Surface Science 254, 3339- 3346 (2008).
Mohammad Vaseem, Ahmad Umar, Sang Hoon Kim, and Yoon-Bong Hahn, “Low-temperature synthesis of flower-shaped CuO nanostructures by solution process: Formation mechanism and structural properties”, Journal of Physical Chemistry C, 112 (15), 5729-5735 (2008).
A. Umar, M. Muzibur Rahman, S. H. Kim and Yoon-Bong Hahn, ” Zinc oxide nanoail-based chemical sensor for hydrazine detection”, Chemical Communications, No. 2, 166-168, 14 January, 2008. [selected as Front-page Paper]
A. Umar, M. M. Rahman, and Y. B. Hahn, “ZnO Nanonails: Synthesis and Their Application as Glucose Biosensor”, J. of Nanoscience and Nanotechnology, 8(6), 3216-3221 (2008).
N. K. Reddy, Q. Ahsanulhaq, J. H. Kim, Y. B. Hahn, “Behavior of n-ZnO nanorods/p-Si heterojunction devices at high temperatures”, Appl. Phys. Lett., 92, 043127 (2008). [selected for inclusion in Virtual Journal of Nanoscale Science & Technology, Vol. 17, Issue 6 (2008)]
N. K. Reddy, Q. Ahsanulhaq, J. H. Kim, Y. B. Hahn, “Well-aligned ZnO nanorods for device applications: Synthesis and characterization of ZnO nanorods and n-ZnO/p-Si heterojunction diodes”, Europhysics Letters, 81, 38001 (2008).
M. Vaseem, A. Umar, S. H. Kim, A. Al-Hajry, “Growth and structural properties of CuO urchin-like and sheet-like structures prepared by simple solution process”, Materials Letters, 62, 1659-1662 (2008).
Ahmad Umar, S. H. Kim, Hansung Lee, Naesung Lee, Y. B. Hahn, “Optical and field emission properties of single-crystalline aligned ZnO nanorods grown on aluminium substrate”, J. Physics D: Appl. Phys., 41, 065412 (2008)
Q. Ahsanulhaq, S. H. Kim, J. H. Kim, and Y. B. Hahn, “Structural Propertiesand Growth Mechanism of Flower-Like ZnO Structures Obtained by Simple Solution Method”, Materials Research Bulletin, 43, 3483-3489 (2008).
Seung-Yong Lee, Ahmad Umar, Duk-Il Suh, Ji-Eun Park, Yoon-Bong Hahn, Jeong-Yong Ahn and Sang-Kwon Lee, “The synthesis of ZnO nanowires and their subsequent use in high-current field-effect transistors formed by dielectrophoresis alignment”, Physica E, 40, 866-872 (2008).
A. Al-Hajry, A. Umar, M. Vaseem, F. El-Tantawy, S. A-Heniti, M. Bououdina, M. S. A-Assiri, “Low-temperature growth and properties of flower-shaped Beta-Ni(OH)2 and NiO structures composed of thin nanosheets networks”, Superlattices and Microstructures, 44(1), 216-222 (2008).
Suk Lee, Ahmad Umar, Sang Hoon Kim, N. Koteeswara Reddy, and Yoon-Bong Hahn, “Growth of ZnO nanoneedles on silicon subatrate by cyclic feeding chemical vapor deposition: Structural and optical properties”, Korean J. Chem. Eng., 24 (6) 1084-1088 (2007).
Ahmad Umar, S. H. Kim, J. H. Kim, Y. B. Hahn, “Structural and optical properties of ZnO nanostructures grown on silicon substrate by thermal evaporation process”, Materials Letters, 62, 167-177 (2007).
Ahmad Umar, S. H. Kim, J. H. Kim, Y. K. Park and Y. B. Hahn, “Structural and optical properties of single-crystalline ultraviolet-emitting needle-shaped ZnO nanowires”, Materials Letters, 61, 4954-4958 (2007).
M. Devika, N. Koteeswara Reddy, D. Sreekantha Reddy, Q. Ahsanulhaq, K. Ramesh, E. S.R. Gopal, K. R. Gunasekhar, Y. B. Hahn, “Synthesis and Characterization of Nanocrystalline SnS Films Grown by Thermal Evaporation Technique”, J. Electrochemical Society, 155 (2), H130-H135 (2007).
Q. Ahsanulhaq, J. H. Kim, and Y. B. Hahn, “Controlled selective growth of ZnO nanorod arrays and their field emission properties”, Nanotechnology, 18, 485307 (2007).
N. Koteeswara Reddy, Q. Ahsanulhaq, J. H. Kim, M. Devika and Y. B. Hahn, “Selection of non-alloyed ohmic contacts for ZnO nanostructure based devices”, Nanotechnology 18, 445710, (2007).
A. Umar, S. H. Kim, J. H. Kim, Y. K. Park, Y. B. Hahn, “Low-temperature growth of flower-shaped ZnO nanostructures on steel alloy by thermal evaporation”, J. Nanoscience and Nanotechnology, vol. 7, No. 12, 4521-4527 (2007). [selected as Front page paper]
A. Umar, S. H. Kim, J. H. Kim, and Y. B. Hahn, “Two-step growth of hexagonal-shaped ZnO nanowires and nanorods and their properties”, J. Nanoscience and Nanotechnology, vol. 7, No. 12, 4522-4528 (2007).
A. Umar, E.-K. Suh,, Y. B. Hahn, “Ultraviolet-emitting javelin-like ZnO nanorods by thermal evaporation: Growth mechanism, structural and optical properties”, Chem. Phys. Lett., 440, 110-115 (2007).
A. Umar, Byoung-Kye Kim, Ju-Jin Kim and Y. B. Hahn, “Optical and electrical properties of ZnO nanowires grown on aluminum foil by non-catalytic thermal evaporation”, Nanotechnology, 18, 175606-175612 (2007)
Q. Ahsanulhaq, A. Umar and Y. B. Hahn, “Growth of aligned ZnO nanorods and nanopencils on ZnO/Si in aqueous solution: growth mechanism and structural and optical properties”, Nanotechnology, 18, 115603 (2007). [Most-accessed articles in Nanotechnology]
Y.-H. Cho, Y. P. Sun, H. M. Kim, T. W. Kang, E.-K. Suh, H. J. Lee, R. J. Choi, and Y. B. Hahn, “High quantum efficiency of violet-blue to green light emission in InGaN quantum well structures grown by graded-indium-content profiling method”, Appl. Phys. Lett., 90, 0011912 (2007).
A. Umar, E.-K. Suh, Y. B. Hahn, “Growth and optical properties of large-quantity single-crystalline ZnO rods by thermal evaporation”, J. Physics D: Appl. Phys. 40, 3478-3484 (2007).
S. Senthilarasu, R. Sathyamoorthy, J. A. Ascencio, Soo-Hyoung Lee, Y. B. Hahn, “Dielectric and ac conduction properties of zinc phthalocyanine (ZnPc) thin films”, Journal of Applied Physics, 101, 034111 (2007)
A. Umar, S. H. Kim, E.-K. Suh, Y. B. Hahn, “Effect of hydrogen pretreatment combined with growth temperature on the morphologies of ZnO nanostructures: structural and optical properties”, J. Crystal Growth, 306(1), 52-61 (2007)
N. Koteeswara Reddy, Y. B. Hahn, M. Devika, H. R. Sumana, K. R. Gunasekhar, “Temperature-dependent structural and optical properties of SnS films”, J. Applied Physics, 101, 093522 (2007).
M. Devika, N. Koteeswara Reddy, D. Sreekantha Reddy, S. Venkatramana Reddy, K. Ramesh, E. S. R. Gopal, K. R. Gunasekhar, V. Ganesan, Y. B. Hahn, “Optimization of the distance between source and substrate for device-grade SnS fims by the thermal evaporation technique”, Journal of Physics: Condensed Matter, 19, 306003 (2007).
H. W. Ra, K. S. Song, C.-W. Ok, Y. B. Hahn, “Heat transfer behavior of high-power light-emitting diode packages”, Korean J. Chem. Eng., 24(2), 197-203 (2007).
A. Umar, B. Karunagaran, E.-K. Suh and Y. B. Hahn, “Structural and optical properties of single-crystalline ZnO nanorods grown on silicon by thermal evaporation”, Nanotechnology, 17, 4072-4077 (2006).
A. Umar, Y. B. Hahn, “Aligned hexagonal coaxial-shaped ZnO nanocolumns on steel alloy by thermal evaporation”, Appl. Phys. Lett., 88, 173120-173122 (2006).
A. Umar, Y. B. Hahn, “ZnO nanosheet networks and hexagonal nanodiscs grown on silicon substrate: growth mechanism and structural and optical properties”, Nanotechnology, 17, 2174-2180 (2006).
A. Umar, Y. H. Im, and Y. B. Hahn, “Evolution of ZnO Nanostructures on Silicon Substrate by Vapor-Solid Mechanism: Structural and Optical Properties”, J. Electronic Materials, 35, 758-765 (2006).
A. Umar, E.-K. Suh, and Y. B. Hahn, “Non-catalytic growth of high aspect-ratio ZnO nanowires by thermal evaporation”, Solid State Commun., 139, 447-451 (2006).
S. Lee, Y. H. Im, S. H. Kim, and Y. B. Hahn, “Structural and optical properties of high qulaity ZnO films on Si grown by atomic layer deposition at low temperatures”, Superlattices and Microstructures, 39, 24-32 (2006).
A. Umar, S.-H. Kim, Y. H. Im, and Y. B. Hahn, “Structural and optical properties of ZnO micro spheres and cages by oxidation of metallic Zn powder”, Superlattices and Microstructures, 39, 238-246 (2006).
A. Umar, H.-W. Ra, J.-P. Jeong, E.-K. Suh, and Y. B. Hahn, “Synthesis of ZnO nanowires on Si substrate by thermal evaporation method without catalyst: Structural and optical properties”, Korean J. Chem. Eng., 23, 499-504 (2006).
Sang Hoon Kim, Ju-Hyung Hong, and Yoon-Bong Hahn, “Formation of Nanodots and Nanostripes of Carbon Nitride on Silicon by Plasma and Thermal Treatments”, Korean J. Chem. Eng., 23, 325-328 (2006).
R. J. Choi and Y. B. Hahn, “Structural and optical properties of InGaN/GaN triangular-shaped quantum wells grown by metalorganic chemical vapor deposition”, Studies in Surface Science and Catalysis, 159, 369-372 (2006).
C. W. Ok and Y. B. Hahn, “Effect of plasma-induced damage on electrical properties of InGaN/GaN multiple quantum well light-emitting diodes”, Studies in Surface Science and Catalysis, 159, 381-384 (2006).
A. Umar, S. Lee, Y. H. Im, and Y. B. Hahn, “Flower-shaped ZnO nanostructures by cyclic feeding chemical vapor deposition: Structural and optical properties”, Nanotechnology, 16, 2462-2468 (2005).
A. Sekar, S. H. Kim, A. Umar, and Y. B. Hahn, “Catalyst-free synthesis of ZnO nanowires on Si by oxidation of Zn powders”, J. Crystal Growth, 277, 471-478 (2005).
A. Umar, S. Lee, Y. S. Lee, K. S. Nahm, and Y. B. Hahn, “Star-shaped ZnO nanostructures on silicon by cyclic feeding chemical vapor deposition”, J. Crystal Growth, 277, 479-484 (2005).
A. Umar, S. H. Kim, Y.-S. Lee, K. S. Nahm, and Y. B. Hahn, “Catalyst-free large-quantity synthesis of ZnO nanorods on Si by a vapor-solid growth mechanism: Structural and optical properties”, J. Crystal Growth, 282, 131-136 (2005).
Kyung-Jun Kim, Cheul-Ro Lee, Yoon-Bong Hahn, “Growth of Crack-Free GaN/Si Heteroepitaxy by Using a Patterned Si Substrate”, J. Korean Phys. Soc., 46(4), 901-905 (2005).
H.-W. Ra, Y. B. Hahn, M. H. Park and Y. K. Hong, “Submicron patterning of Ta, NiFe,and Pac-man type Ta/NiFe/Ta magnetic elements”, Korean J. Chem. Eng., 22(5) 793-796 (2005).
Sang-Hoon Kim, Ahmad Umar, and Yoon-Bong Hahn, “Growth and Formation Mechanism of Sea-urchin Like ZnO Nanostructures on Si”, Korean J. Chem. Eng., 22 (3), 489-493 (2005).
R. J. Choi, E.-K. Suh, H. J. Lee, and Y. B. Hahn, “Effects of Growth Variables on Structural and Optical Properties of InGaN/GaN Triangular-Shaped Quantum Wells”, Korean J. Chem. Eng., 22, 298-302 (2005).
Suk Lee, Yong Hwan Im, Youn-Sik Lee, Kee Suk Nahm, and Yoon-Bong Hahn, “Two-Step Growth of ZnO Films on Silicon by Atomic Layer Deposition”, Korean J. Chem. Eng., 22, 334-338 (2005).
S.-T. Hwang, Y.-S. Byoun, Y.B. Hahn, K.S. Nahm, and Y.-S. Lee, “Characterization of Stone Powder/TiO2 Core/Shell Composite Particles Prepared from TiO2 Nanoparticles via Heterocoagulation in a Water System”, J. End. Eng. Chem., 11, 110-116 (2005).
S.-I. Lee, Y.B. Hahn, K.S. Nahm, and Y.-S. Lee, “Synthesis of olyether-based polyurethane-silica nanocomposites with high elongation property”, Polymers for Avdanced Technologies, (2005), in press.
P. Uthirakumar, Y.B. Hahn, K.S. Nahm, and Y.-S. Lee, “Exfoliated high impact polystyrene/MMT nanocomposites using anchored cationic radical initiator-MMT hybrid”, Eur. Polym. J., (2005), in press.
S.-I. Lee, D.-B. Kim, J.-K. Kim, Y.-B. Hahn, K.-S. Nahm, and Y.-S. Lee, “A Comparative Study on Polyurethane Coating Films Prepared Using 4,4′-Methylenebis(2-chloroaniline) and 1,3-Propanediolbis(4-aminobenzoate) as Crosslinking Agents”, Elastomer, 39, 71-76 (2004).
C. S. Kim, H. K. Cho, R. J. Choi, Y. B. Hahn, H. J. Lee, C.-H. Hong, “Effect of Highly Si-Doped GaN Current Spreading Layer at the n+-GaN Multi-Quantumn-Well Interface on InGaN/GaN Blue-Light-Emitting Diodes”, J. Korean Phys. Soc., 44(1), 133-136 (2004).
P. Uthirakumar, K.-S. Nahm. Y.-B. Hahn, and Y.-S. Lee, “Preparation of polystyrene/montmorillonite nanocomposites using a new radical initiator-monomillonite hybrid via in situ intercalative polymerizaion”, European Polymer Journal, 40, 2437-2444 (2004).
P. Uthirakumar, C.-J. Kim, Nahm. Y.-B. Hahn, and Y.-S. Lee, “Preparation and characterization of new difunctional cationic radical initiator-montmorillonite hybrids”, Colloids and Surfaces A : Physicochem. Eng. Aspects. 247, 69-75 (2004).
H.K. Kang, R. J. Choi, H. J. Lee, Y. B. Hahn, “Effect of Dopant Concentration on the Breakdown Voltage in InGaN/GaN Multiple-Quantum-Well Light-Emitting Diodes”, J. Korean Phys. Soc., 45(4), 1056-1059 (2004).
H.-W. Ra, Y. B. Hahn, K. S. Song, M. H. Park, Y. K. Hong, “Dry Etching of NiFe/Co and NiFe/Al-O/Co Multilayers in an Inductively Coupled Plasma of Cl2/Ar Mixture”, J. Vacuum Science & Technology A, 22(6), 2388-2391 (2004).
H. J. Park, H.-W. Ra, K. S. Song, Y. B. Hahn, “Inductively Coupled Plasma Etching of Ta, Co, Fe, NiFe, NiFeCo and MnNi with Cl2/Ar Discharges”, Korean J. Chem. Eng., 21, 1235-1239 (2004).
Yuanping Sun, Yong-Hoon Cho, E.-K. Suh, H. J. Lee, R. J. Choi, Y. B. Hahn, “Carrier dynamics of high-efficiency green light emission in graded-indium-content InGaN/GaN quantum wells: An important role of effective carrier transfer”, Appl. Phys. Lett. 84(1), 49-51 (2004).
Y. H. Mo, M. D. Shajahan, Y. S. Lee, Y. B. Hahn, K. S. Nahm, “Structural transformation of carbon nanotubes to silicon carbide nanorods or microcrystals by the reaction with different silicon sources in rf induced CVD reactor”, Synthetic Metals, 140, 309-315 (2004).
H.-G. Kang, Y.-H. Im, S. Ko, S.-H. Lim, B.-S. Han, Y. B. Hahn, “Superconducting flux flow transistor fabricated by an inductively coupled plasma etching technique”, Physica C, 400, 111-116 (2004).
R. J. Choi, H. J. Lee, Y. B. Hahn, H. K. Cho, “Structural and Optical Properties of InGaN/GaN Triangular-shape Quantum Wells with Differrent Threading Dislocation Densities”, Korean J. of Chemical Engineering, 21, 292-295 (2004).
J. W. Lee, R. J. Shul, G. A. Vawter, C. R. Abernathy, S. J. Pearton, Y. B. Hahn, “Reactive Ion Beam Etching of In-Containing Compound Semiconductors in an Inductively Coupled Cl2/Ar Plasma,” Jpn. J. Appl. Phys. Part 1, 42, 38-43 (2003).
Tae Hee Kim, Hyung Jo Park, Ju Hyung Hong, and Yoon-Bong Hahn, “Plasma Enhanced Chemical Vapor Deposition of Low Dielectric Constant SiCFO Thin Films”, Chem. Phys. Lett., 368(1/2), 36-40 (2003).
R. J. Choi, H. W. Shim, M. S. Han, E.-K. Suh, C.-J. Yoon, H. J. Lee, and Y. B. Hahn, “Efficient blue light-emitting diodes with InGaN/GaN triangular shaped quantum wells” Appl. Phys. Lett., 82, 2764-2766 (2003).
J. S. Park, H. J. Park and Y. B. Hahn, “Dry Etching of ZnO Films and Plasma-Induced Damage to Optical Properties,” J. Vacuum Science & Technology B, 21(2), 800-803 (2003).
R. J. Choi, B. K. Lee, H. W. Shim, D.S. Kang, E.-K. Suh, C. H. Hong, H. J. Lee, Y. B. Hahn, H. K. Cho, “Structural and optical properties of InGaN/GaN triangular-shaped quantum wells with different wavelengths”, phys. stat. sol. (c), 2703-2706 (2003).
Y.Sun, Y.-H. Cho, E.-K. Suh, H. J. Lee, R. J. Choi, and Y. B. Hahn, “High brightness blue and green light emitting quantum wells with graded-In-content profile grown by MOCVD”, phys. stat. sol. (c), 2270-2273 (2003).
H. J. Park, C. S. Choi, R. J. Choi, H. J. Lee, and Y. B. Hahn, “Dry Etching of InGaN/GaN Multiple Quantum Well LED Structures in Inductively Coupled Cl2/Ar Plasmas”, J. Korean Phys. Soc., 42(3), 358-362 (2003).
H.-G. Kang, S.-H. Limm, B.-S. Han, H.-S. Choi, and Y. B. Hahn, “Conditions of ICP for SuperconductingFlux Flow Transistor and Its Etching Characteristics”, Materials Science Engineering B102, 344-347 (2003).
R. J. Choi, Y. B. Hahn, H. W. Shim, E. K. Suh, C.-H. Hong, and H. J. Lee, “Improvement of Electrical and Optical Properties of InGaN/GaN-Based Light-Emitting Diodes with Triangular Quantum Well Structure,” Korean J. Chem. Eng., 20, 1134 (2003).
H. S. Yoon, R. J. Choi, C. S. Kim, Y. B. Hahn, C. H. Hong, E.-K. Suh, and H. J. Lee, “Indium Doping Effects on GaN Epilayers Grown by Metal-Organic Chemical Vapor Deposition,” J. Korean Phys. Soc., 42, S438-S440 (2003).
B. K. Lee, R. J. CHoi, H. W. Shim, C. S. Kim, H. S. Yoon, D. S. Kang, E.-K. Suh, Y. B. Hahn, and H. J. Lee, “Structural and Optical Properties of TrapezoidInGaN/GaN Multiple Quantum Wells in the Active Layer of Light-Emitting Diodes,” J. Korean Phys. Soc., 42, S504-S507 (2003).
C. S. Kim, H. S. Youn, R. J. Choi, S. J. Bae, H. K. Cho, B. K. Lee, D. S. Kang, E.-K. Suh, Y. B. Hahn, H. J. Lee, and C.-H. Hong, “Characteristics of InGaN/GaN Multi-Quantum-Well Light-Emitting Diode with Various Growth Temperature of p-GaN Layers,” J. Korean Phys. Soc., 42, S431-S433 (2003).
C. S. Kim, R. J. Choi, H. S. Youn, S. J. Bae, H. K. Cho, B. K. Lee, D. S. Kang, Y. B. Hahn, H. J. Lee, and C.-H. Hong, “Enhanced I-V Characteristics in InGaN/GaN Multi-Quantum-Well Light-Emitting Diode with an n-type Interface Layer,” J. Korean Phys. Soc., 42, S367-S370 (2003).
Y. B. Hahn, R. J. Choi, and J. H. Hong, H. J. Park, C. S. Choi, and H. J. Lee, “High-Density Plasma-Induced Etch Damage of InGaN/GaN Multiple Quantum Well Light-Emitting Diodes,” J. Appl. Phys., 92(4), 1189-1194 (2002).
Hyung-Kyu, Ryu, Wan-Young Kim, Kee Suk Nahm, Yoon-Bong Hahn, Youn-Sik Lee, Changjin Lee, “An Optical Study of a Distyrylbenzene Derivative with Bulky Substituents”, Synthetic Metals, 128, 21-25 (2002).
Tak Jeong, Tae Hee Kim, Wan-Young Kim, Kuk-Haeng Lee, and Yoon-Bong Hahn, “High Yield Purification of Carbon Nanotubes with H2S-O2 Mixture”, Korean J. Chem. Eng., 19(3), 519-523 (2002).
Jin Su Park, Tae Hee Kim, Chang Sun Choi, and Yoon-Bong Hahn, “Dry Etching of SrBi2Ta2O9: Comparison of Inductively Coupled Plasma Chemistries”, Korean J. Chem. Eng., 19(3), 486-490 (2002).
Yeon-Ho Im and Yoon-Bong Hahn, “Heat Transfer between Wafer and Electrode in a High Density Plasma Etcher”, Korean J. Chem. Eng., 19(2), 347-350 (2002).
Kwang Chul Kim, Chan Il Park, Jae Il Roh, Kee Suk Nahm, Yoon Bong Hahn, Youn-Sik Lee and Kee Young Lim,”Mechanistic Study and Characterization of 3C-SiC(100) Grown on Si(100)”, J. Electrochem. Society, 148(5), C383-C389 (2001)
J.-S. Park, Y. H. Im, R.-J. Choi, Y. B. Hahn, C. S. Choi, J.-K. Lee, “Plasma Chemistries for Dry Etching of SrBi2Ta2O9 Thin Films”, Electrochem. Solid-State Lett., 4(2), G17-G19 (2001).
Y. B. Hahn, S. J. Pearton, H. Cho, and K. P. Lee, “Dry Etching Mechanism of Copper and Magnetic Materials with UV Illumination”, Materials Science & Engineering, 79(1), 20-26 (2001).
Y. H. Im, Y. B. Hahn, and S. J. Pearton, “Level Set Approach to Simulation of Etch Profile Evolution in a High Density Plasma Etching System”, J. Vacuum Science & Technology B, 19(3), 701-710 (2001).
Y. B. Hahn, B.-C. Cho, Y. H. Im, K. S. Nahm, and Y. S.Lee, “Effect of Dry Etching Conditions on Surface Morphology and Optical Properties of GaN Films in Cl2-Based Inductively Coupled Plasmas”, J. Vacuum Science & Technology A, 19(4), 1277-1281 (2001).
Y. H. Im, J.-S. Park, C. S. Choi, R.-J. Choi, Y. B.Hahn, J.-K. Lee, K. S. Nahm, Y. S. Lee, “Dry Etching of SrBi2Ta2O9 Thin Films in Cl2/NF3/O2/Ar Inductively Coupled Plasmas”, J. Vacuum Science & Technology A, 19(4), 1315-1319 (2001).
Tak Jeong, Wan-Young Kim, and Yoon Bong Hahn, “A New Purification Method of Single-Wall Carbon Nanotubes using H2S and O2 Mixture Gas”, Chem. Phys. Lett., 344/1-2, 18-22 (2001).
Y. H. Im, H.-G. Kang, M. S. Han, B.-S. Han, Y. B. Hahn, “High Density Plasma Etching of Y-Ba-Cu-O Superconductors”, Electrochem. Solid-State Lett., 4(10), C77-C79 (2001).
Y. H. Im, C. S. Choi, and Y. B. Hahn, “High Density Plasma Etching of GaN Films in Cl2/Ar Discharges with a Low-Frequency-Excited DC Bias”, J. Korean Physical Society, 39(4), 617-621 (2001).
J. S. Park, Y. H. Im, C. S. Choi, R. J. Choi, and Y. B. Hahn, “Dry Etching of SrBi2Ta2O9 Thin Films for FRAM Applications”, J. Korean Physical Society, 39(4), S503-S507 (2001).
H. Cho, K. P. Lee, Y. B. Hahn, E. S. Lambers, and S. J. Pearton, “Effects of Ultraviolet Illumination on Dry Etch Rates of NiFe-Based Magnetic Multilayers”, J. Vac. Sci. Technol. A, 18(4), 1273-1277 (2000).
Y. B. Hahn, D. C. Hays, H. Cho, K. B. Jung, E. S. Lambers, C. R. Abernathy, S. J.Pearton, W. S. Hobson, and R. J. Shul, “Inductively Coupled Plasma Etching in ICl- and IBr-Based Chemistries: Part I. GaAs, GaSb and AlGaAs,” Plasma Chemistry & Plasma Processing, 20(3), 405-415 (2000).
Y. B. Hahn, D. C. Hays, H. Cho, K. B. Jung, E. S. Lambers, C. R. Abernathy, S. J. Pearton, W. S. Hobson, and R. J. Shul, “Inductively Coupled Plasma Etching in ICl- and IBr-Based Chemistries: Part II. InP, InSb, InGaP and InGaAs,” Plasma Chemistry & Plasma Processing, 20(3), 417-427 (2000).
D. O. Kim, R. J. Choi, K. S. Nahm, and Y. B. Hahn, “Growth Characteristics and Deposition Mechanism of SrTiO3 Thin Films by Plasma Enhanced MOCVD.” J. Vac. Sci. Technal. A, 18(2), 361-366 (2000)
K. C. Kim, K. S. Nahm, Y. B. Hahn, Y. S. Lee, and H.-S. Byun, “Kinetic Study of 3C-SiC Growth on Si by Pyrolyzing Tetramethysilane in Low Pressure Radio Frequency-Induction Heated Chemical Vapor Depsosition Reactor”, J. Vac. Sci. Technal. A, 18(3), 891-899 (2000)
Y. B. Hahn and S. J. Pearton, “Global Self-Consistent Model of an Inductively Coupled Plasma Etching System,” Korean J. Chemical Engineering, 17(3), 304-309 (2000).
S. H. Yang, K. S. Nahm, Y. B. Hahn, Y. S. Lee, M. S. Jeong, and E.-K. Suh, “High-Temperature Vapor-Phase Growth and Characterization of Thick GaN by the Direct Reaction of Ga and NH3”, J. Korean Physical Society, 36, 182-187 (2000).
C.-H. Cho, Y.-S. Lee, K. S. Nahm, Y. B. Hahn, and S.-C. Yu, “A New Polymer Containing Confined Phenylenevinylene Segments: Synthesis and Photoluminescence”, Synthetic Metals, 114, 331-335 (2000).
Y. H. Im, J.S. Park, Y. B. Hahn, K. S. Nahm, and Y. S. Lee, “Cl2-Based Dry Etching of GaN Films under Inductively Coupled Plasma Conditions,” J. of Vacuum Science & Technology A, 18(5), 2169-2174 (2000).
B. C. Cho, Y. H. Im, J. S. Park, T. Jeong, and Y. B. Hahn,”Fast Dry Etching of Doped GaN Films in Cl2-Based Inductively Coupled High Density Plasmas”, J. Korean Physical Society, 37, 23-27 (2000).
B. C. Cho, Y. H. Im, Y. B. Hahn, K. S. Nahm, Y.-S. Lee, and S. J. Pearton, “Inductively Coupled Plasma Etching of Doped GaN Films with Cl2/Ar Discharges”, J. of Electrochemical Society, in press (2000).
Y. B. Hahn, S. J. Pearton, H. Cho, and K. P. Lee, “Dry Etching Mechanism of Copper and Magnetic Materials with UV Illumination”, Materials Science and Engineering B, accepted (2000).
H. Cho, K. P. Lee, Y.B. Hahn, E.S. Lambers, S.J. Pearton, “Plasma Etching of Magnetic Multilayers – Effect of Concurrent UV Illumination”, Materials Science and Engineering B, 67 (3), 145-151 (1999).
D. C. Hays, C. R. Abernathy, W. S. Hobson, S. J. Pearton, J. Han, R. J. Shul, H. Cho, K. B. Jung, F. Ren, and Y. B. Hahn, “Selective Dry Etching of GaN/InN/AlN, GaAs/AlGaAs and GaAs/InGaP Systems”, Mater. Res. Soc. Symp. Proc., vol. 573, 281-286 (1999).
K. P. Lee, K. B. Jung, H. Cho, D. Kumar, S. V. Pietambaram, R. K. Singh, P. H.Hogan, K. H. Dahmen, Y. B. Hahn, S. J. Pearton, “Dry Etching to Form Submicron Features in CMR Oxides: (Pr,Ba,Ca)MnO3 and (La,Sr)MnO3”, Mater. Res. Soc. Symp. Proc, Vol. 574, 341-346 (1999)
D. C. Hays, K. B. Jung, Y. B. Hahn, E. S. Lambers, S. J. Pearton, J. Donahue, D. Johnson, and R. J. Shul, “Comparison of F2-Based Gases for High-Rate Dry Etching of Si”, Journal of Electrochemical Society, 146(10), 3812-3816 (1999).
S. J. Kim, Y. H. Seo, K. S. Nahm, Y. B. Hahn, H. W. Shim, E.-K. Suh, K. Y. Lim, and H. J. Lee, “Effect of Gas Feeding Methods on Optical Properties of GaN Growth by Rapid Thermal Chemical Vapor Deposition Reactor”, J. Electron. Mat., 28(8), 970-974 (1999).
K. P. Lee, K. B. Jung, H. Cho, D. Kumar, S. V. Pietambaram, R. K. Singh, P. H. Hogan, K. H. Dahmen, Y. B. Hahn, and S. J. Pearton, “Cl2-Based Dry Etching of Doped Manganate Perovskites: PrBaCaMnO3 and LaSrMnO3”, J. Electrochem. Soc., 146(7),2748-2751 (1999).
Y. B. Hahn, J. W. Lee, G. A. Vawter, R. J. Shul, C. R. Abernathy, D. Hays, E. S. Lambers, and S. J. Pearton, “Reactive Ion Beam Etching of GaAs and Related Compounds in an Inductively Coupled Plasma of Cl2-Ar Mixture,” J. Vac. Sci. Technol. B, 17(2), 366-371(1999).
Y. B. Hahn, D. C. Hays, S. M. Donovan, C. R. Abernathy, J. Han, R. J. Shul, H. Cho, K. B. Jung, and S. J. Pearton, “Effect of Additive Noble Gases in Chlorine-Based Inductively Coupled Plasma Etching of GaN, InN and AlN,” J. Vac. Sci. Technol. A, 17(3), 763-773 (1999).
J. W. Lee, K. D. Mackenzie, D. Johnson, R. J. Shul, Y. B. Hahn, D. C. Hays, C. R. Abernathy, F. Ren, and S. J. Pearton, “Damage to III-V Devices During Electron Cyclotron Resonance Chemical Vapor Deposition, “J. Vac. Sci. Technol. A, 17(4), 2183-2187 (1999)
H. Cho, Y. B. Hahn, D. C. Hays, C. R. Abernathy, S. M. Donovan, J. D. Mackenzie, and S. J. Pearton, “III-Nitride Dry Etching: Comparison of Inductively Coupled Plasma Chemistries,” J. Vac. Sci. Technol. A. 17(4), 2202-2208 (1999)
K. B. Jung, H. Cho, Y. B. Hahn, D. C. Hays, E. S. Lambers, Y. D. Park, T. Feng, J. R. Childress, and S. J. Pearton, “Effect of Inert Gas Additive on Cl2-Based Inductively Coupled Plasma Etching of NiFe and NiFeCo,” J. Vac. Sci. Technol. A, 17(4), 2223-2227 (1999)
D.C. Hays, A. Cho, K. B. Jung, Y. B. Hahn, C. R. Abernathy, and S. J. Pearton, “Selective Dry Etching Using Inductively Coupled Plasma – Part I. GaAs/AlGaAs and GaAs/InGaP,” Appl. Surf. Sci., 147(1-4), 125-133(1999).
D.C. Hays, A. Cho, K. B. Jung, Y. B. Hahn, C. R. Abernathy, and S. J. Pearton, “Selective Dry Etching Using Inductively CoupledPlasma – Part II. InN/GaN and InN/AlN,” Appl. Surf. Sci., 147(1-4), 134-139(1999).
Y. B. Hahn, D. C. Hays, H. Cho, K. B. Jung, C. R. Abernathy, and S. J. Pearton, “Effect of Inert Gas Additive Species on Cl2 High Density Plasma Etching of Compound semiconductors: Part I. GaAs and GaSb,” Appl. Surf. Sci., 147(1-4), 207-214(1999).
Y. B. Hahn, D. C. Hays, H. Cho, K. B. Jung, C. R. Abernathy, and S. J. Pearton, “Effect of Inert Gas Additive Species on Cl2 High Density Plasma Etching of Compound semiconductors: Part II. InP, InSb, InGaP and InGaAs,” Appl. Surf. Sci., 147(1-4), 215-221(1999).
J. Hong, R. J. Shul, L. Zhang, L. F. Lester, H. Cho, Y. B. Hahn, D. C. Hays, K.B. Jung, S. J. Pearton, C.-M. Zetterling, and M. Osterling, “Plasma Chemistries For High Density Plasma Ecthing of SiC,” J. Electronic Materials, 28, 194-200(1999)
H. Cho, Y. B. Hahn, D. C. Hays, K. B.Jung, S. M. Donovan, C. R. Abernathy, S. J. Pearton, and R. J. Shul, “Inductively Coupled Plasma Etching of III-Nitrides in Cl2/Xe, Cl2/Ar and Cl2/He,” MRS Internet J. Nitride Semicond. Res. 4S1, G6.56 (1999).
K. B. Jung, H. Cho, Y. B. Hahn, D. C. Hays, T. Feng, Y. D. Park, J. R. Childress, and S. J. Pearton, “Cl2-Based Inductively Coupled Plasma Etching of CoFeB, CoSm, CoZr and FeMn.” Materials Science Engineering B, 60, 101-106(1999)
K. B. Jung, H. Cho, D. C. Hays, Y. B. Hahn, E. S. Lambers, T. Feng, Y. D. Park, J. R. Childress, and S. J. Pearton, “Inter-Halogen Plasma Chemistries for Dry Etch Patterning of Ni, Fe, NiFe and NiFeCo Thin Films,” Appl. Surf. Sci., 140(1-2), 215-222 (1999).
H. Cho, K. B. Jung, Y. B. Hahn, D. C. Hays, J. A. Caballero, J. R. Childress, and S. J. Pearton, “Interhalogen Plasma Chemistries for Etching of NiSmSb,” Electrochem. & Solid-State Lett., 2(2), 70-71 (1999).
Y. B. Hahn, D. C. Hays, H. Cho, K. B. Jung, C. R. Abernathy, S. M. Donovan, S. J. Pearton, J. Han, and R. J. Shul, “Comparison of ICl- and IBr-Based Plasma Chemistries for Inductively Coupled Plasma Etching of GaN, InN and AlN,” Mat. Sci. Eng. B, 60, 95-100 (1999).
Y. B. Hahn and D. O. Kim, “Structural and Electrical Properties of SrTiO3 Thin Films Prepared by Plasma Enhanced Metal Organic Chemical Vapor Deposition,” J. Vac. Sci. Technol. A, 17(4), 1982-1986 (1999).
K. B. Jung, H. Cho, Y. B. Hahn, E. S. Lambers, S. Onishi, D. Johnson, “Relative Merits of Cl2 and CO/NH3 Plasma Chemictries forDry Etching of MRAM Device Elements,” J. Appl. Phys., 85(8), 4788-4790 (1999).
H. Cho, K. B. Jung, D. C. Hays, Y. B. Hahn, T. Feng, Y. D. Park, J. R. Childress, F. J. Cadieu, R. Rani, X. R. Qian, L. Chen, and S. J. Pearton, “Inductively Coupled Plasma Etching of CoFeB, CoZr, CoSm and FeMn Thin Films in Interhalogen Mixtures”, Materials Science Engineering B, 60, 107-111 (1999)
K. B. Jung, H. Cho, Y. B. Hahn, D.C. Hays, T. Feng, Y. D. Park, J. R. Childress, and S. J. Pearton, “Cl2-Based Inductively Coupled Plasma Etching of CoFeB, CoZr, CoSm and FeMn”, Materials Science Engineering B, 60, 101-106 (1999).
K. B. Jung, H. Cho, Y. B. Hahn, D. C. Hays, E. S. Lambers, Y. D. Park, T. Feng, J. R. Childress, and S. J. Pearton, “Comparison of Cl2/He, Cl2/Ar and Cl2/Xe Plasma Chemistries for Dry Etching of NiFe and NiFeCo,” J. Electrochem. Soc., 146(4), 1465-1468 (1999).
Y. B. Hahn, S. J. Pearton, H. Cho, and K. P. Lee, “Dry Etching Mechanism of Copper and Magnetic Materials with UV Illumination,” J. Electrochem. Soc., submitted (1999).
Y. B. Hahn, D. C. Hays, K. B. Jung, and S. J. Pearton, “Selective Dry Etching of GaAs/AlGaAs/InGaP and InN/GaN/AlN Systems in ICl- and IBr-Based Inductively Coupled Plasmas,” Proc. The 8th APCChE Congress, Vol. 3, pp. 16-19, August 16-19, 1999, Seoul, Korea.
Y. B. Hahn, Yeon-Ho Im, Bum-Chul Cho, Jin-Soo Park, Hyung Jae Lee, and S. J. Pearon, “High Density Plasma Etching of III-Nitrides,” Proc. 1999 Korea-China Joint Symposium on Semiconductor Physics and Device Applications,” pp. 36-39, Sept. 13-14, 1999, Daeduk, Korea.
Y. B. Hahn, J. W. Lee, K. D. Mackenzie, D. Johnson, S. J. Pearton, and F. Ren, “Effect of Deposition Condition on Wet and Dry Etch Rates of Device Quality Inductively Coupled Plasma-Chemically Deposited SiNx,” Solid-State Electronics,42(11), 2017-2021 (1998).
Y. B. Hahn, J. W. Lee, K. D. Mackenzie, D. Johnson, D. Hays, C. R. Abernathy, and S. J. Pearton, “Electrical Effects in GaAs and AlGaAs during Inductively Coupled Plasm-Enhanced ChemicalVapor Deposition of SiNx Films,” Electrochem. & Solid-State Lett., 1(5), 230-232 (1998).
Jong-Wha Kim, Do-Oh Kim, and Yoon-Bong Hahn, “Effect of Rapid Thermal Annealing on the Structural and Electrical Properties of TiO2 Thin Films Prepared by Plasma Enhanced CVD,” Korean J. Chem. Eng., 15(2), 217-222 (1998).
Y. B. Hahn and K. S. Chang, “Mathematical Modeling of the Reduction Process of Iron Ore Particles in Two Stages of Twin-Fluidized Beds in Series,” Metallurgical & Materials Trans. B, 29B, 1107-1115 (1998).
Y. B. Hahn and Y. H. Im, “Wall-to-Bed Heat Transfer in a Circulating Fluidized Bed for the Reduction of Iron Ore Particles,” Metallurgical &Materials Trans. B, 28B, 713-720 (1997).
Yoon-Bong Hahn, Jong-Wha Kim, Chang-Ju Youn, and In-Sun Lee, “Preparation of PbTiO3 Thin Films by Plasma Enhanced MOCVD and the Effect of Rapid Thermal Annealing”, J. Electronic Materials, 26(12), 1394-1400 (1997).
I.-S. Lee, J.-W. Kim, C.-J. Youn, S.-K. Park, and Y. B. Hahn, “Preparation and Characterization of TiO2 Thin Films by PECVD on Si Substrate”, Korean J. Chem. Eng., 13(5), 473-477 (1996).
H.-J. Lee, Y. H. Seo, D.-H. Oh, K. S. Nahm, Y. B. Hahn, I. C. Jeon, E.-K. Suh, Y. H. Lee, and H. J. Lee, “Light-Emission Phenomena from Porous Silicon: Siloxene Compounds and Quantum Size Effect,” J. Appl. Phys., 75(12), 8060-8065 (1994).
Y. B. Hahn, “A Collision Model for Fine Particles in a Turbulent System,” Korean J. Chem. Eng., 11(4), 246-253 (1994).
Y. B. Hahn and H. Y. Sohn, “Mathematical Modeling of a Sulfide Flash Smelting Process: I. Model Development and Verification with Laboratory and Pilot-Plant Measurements for Chalcopyrite Concentrate Smelting,” Metall. Trans. B, 21B, 945-958 (1990).
Y. B. Hahn and H. Y. Sohn, “Mathematical Modeling of a Sulfide Flash Smelting Process: II. Quantitative Analysis of Radiative Heat Transfer,” Metall. Trans. B, 21B, 959-966 (1990).
Y. B. Hahn and H. Y. Sohn, “The Trajectories and Distribution of Particles in a Turbulent Axisymmetric Gas Jet Injected into the Flash Furnace Shaft,” Metall. Trans. B, 19B, 145-166 (1988).
Y. B. Hahn and H. Y. Sohn, “Computation of the Flow Field in a Recirculating Turbulent Gas Jet,” Chem. Eng. Commun. 61, 39-57 (1987).
Y. B. Hahn, K. J. Hahn, and S. J. Im, “A Mathematical Model for Adsorption of Silver on Activated Carbon,” J. Korean Inst. Metals and Materials, 24, 34-43 (1986).