Choy, C.H. - 香港大学 - 电机电子工程系

个人简介

Wallace C. H. Choy received his PhD Degree in Electronic Engineering from the University of Surrey, UK in 1999. He then joined National Research Council of Canada as a member of research staff to work on optical device structures of polarization independent optical amplifiers and modulators. He joined Fujitsu at San Jose, US in 2001 to develop real-time wavelength tunable lasers and optical transmitter modules. He is currently a professor of Department of Electrical and Electronic Engineering, the University of Hong Kong (HKU). Dr. Choy has published over 175 internationally peer-reviewed journal papers, contributed to one book and five book chapters, as well as a number of US and China patents. Among his publications, 12 papers have been featured as cover-story articles such as Adv. Mater., Adv Energy Mater., and Chem Comm., and 14 articles have been highlighted in research new/scholarly articles. Details of publication can be found in Google Scholar. He was the recipient of the Sir Edward Youde Memorial Fellowship, the Croucher Foundation Fellowship, and the Outstanding Achievement Award from National Research Council of Canada and HKU Research Output Prize. He received overseas visiting fellowships from HKU to take a sabbatical leave at George Malliaras’s Group, Cornell University in 2008, a visit to Prof. Yang Yang, UCLA in summers of 2009 and 2011, Prof. Karl Leo, Institut fuer Angewandte Photophysik (IAPP), Technische Universitaet Dresden, Germany in the summer of 2010, and Prof./Sir Richard Friend, Cavendish Lab, Cambridge University, UK. Wallace Choy is a fellow of OSA and senior member of IEEE. He has been recognized as Top 1% of most-cited scientists in Thomson Reuter’s Essential Science Indicators (ESI) three years in a row 2014, 2015 and 2016. He has been recognized as prolific researcher on organic solar cells in the index (WFC in physical sciences) in Nature Index 2014 Hong Kong published by Nature. He has been serving a technical consultant of HK-Ulvac (a member of stock-listed Ulvac Corp) since 2005. He has served as editorial board member for Nature Publishing Group of Scientific Reports and IOP Journal of Physics D, senior editor of IEEE Photonics Journal, topical editor of OSA Journal of the Optical Society of America B (JOSA founded in 1917), and guest editor of OSA Journal of Photonic Research, and Journal of Optical Quantum Electronics. He has delivered over 60 invited talks and served as a committee member in internationally industrial and academic conferences organized by various organizations such as IEEE, OSA and Plastic Electronics Foundation.

研究领域

Research Interest: the design, physics, and mechanism of organic/inorganic optoelectronic devices; plasmonic nanostructures, nanoscale structures and the hybrid systems with organic/inorganic materials; the multi-physical (optical, electrical and thermal) properties and applications of the hybrid systems.

近期论文

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X. Ren, Z. Wang, W.E.I. Sha*, W.C.H. Choy*, "Exploring the Way to Approach the Efficiency Limit of Perovskite Solar Cells by Drift-Diffusion Model", ACS Photonics, in press. J. Cheng, X. Ren, H.L. Zhu, J. Mao, C. Liang, J. Zhuang, V.A. L. Roy, W.C. H. Choy, “Pre- and post-treatments free nanocomposite based hole transport layer for high performance organic solar cells with considerably enhanced reproducibility”, Nano Energy, DOI:10.1016/j.nanoen.2017.02.021 H. Zhang, J. Cheng, D. Li, F. Lin, J. Mao, C. Liang, A. K.-Y. Jen, M. Grätzel, W.C.H. Choy*, "Toward All Room-Temperature, Solution-Processed, High-Performance Planar Perovskite Solar Cells: A New Scheme of Pyridine-Promoted Perovskite Formation", Adv. Mater., DOI:10.1002/adma.201604695. (featured as the inside back cover of Adv. Mater.) H. Zhang, D. Li, J. Cheng, F. Lin, J. Mao, A. K.-Y. Jen, M. Grätzel, W.C.H. Choy*, "Room Temperature Formation of Organic-Inorganic Lead Halide Perovskites: Design of Nanostructured and Highly Reactive Intermediates", J. Mater. Chem. A,DOI:10.1039/C6TA09845B. J.Mao, W.E.I. Sha, H. Zhang, X. Ren, J. Zhuang, V.A.L. Roy, K.S. Wong, W.C.H. Choy*, "Novel Direct Nano-patterning Approach to Fabricate Periodically Nanostructured Perovskite for Optoelectronic Applications", Adv. Funct. Mater., DOI: 10.1002/adfm.201606525. (highlighted as research news in MaterialsViewsChina.com published by Wiley.) T. Liu, X. Pan, X. Meng, Y. Liu, D. Wei, W. Ma, L. Huo, X. Sun, T.H. Lee, M. Huang, H. Choi, J.Y. Kim, W.C.H. Choy, and Y. Sun, "Alkyl Side-Chain Engineering in Wide-Bandgap Copolymers Leading to Power Conversion Efficiencies over 10%", Adv. Mat., DOI: 10.1002/adma.201604251. H.L. Zhu, J. Xiao, J. Mao, H. Zhang, Y. Zhao, W.C.H. Choy*, “Controllable Crystallization of CH3NH3Sn0.25Pb0.75I3 Perovskites for Hysteresis-Free Solar Cells with Efficiency Reaching 15.2%”, Adv. Funct. Mat., in press. Z. S. Wang, W. E. I. Sha*, W. C. H. Choy*, "Exciton Delocalization Incorporated Drift-Diffusion Model for Bulk-Heterojunction Organic Solar Cells", J. Appl. Phys., vol. 120, p. 213101, 2016. H. Lin, L. Zhu, H. Huang, C.J. Reckmeier, C. Liang, A.L. Rogach, W.C.H. Choy*, "Efficient Near-Infrared Light-Emitting Diodes Based on Organometallic Halide Perovskite-Poly(2-ethyl-2-oxazoline) Nanocomposite Thin Films", Nanoscale, vol. 8, pp 19846-19852, 2016. H. Huang, H. Lin, S.V. Kershaw, A.S. Susha, W.C.H. Choy*, A.L. Rogach*, "Polyhedral oligomeric silsesquioxane enhances the brightness of perovskite nanocrystal based green light-emitting devices", J Phys. Chem Lett., vol. 7, p. 4398, 2016. F.X. Xie, H. Su, J. Mao, K.S. Wong, W.C.H. Choy, "Evolution of Diffusion Length and Trap State Induced by Chloride in Perovskite Solar Cell", J. Phys. Chem C, vol. 120, p.21248, 2016. X. Ren, J. Cheng, S. Zhang, X. Li, T. Rao, L. Huo, J. Hou, W.C.H. Choy*, "High Efficiency Organic Solar Cells Achieved by the simultaneous Plasmon-Optical and -Electrical Effects from Plasmonic Asymmetric Modes of Gold Nanostars", Small, vol. 12, No. 37, pp 5200-5207, 2016. (featured as the inside front cover of Small.) (highlighted as research news in MaterialsViewsChina.com published by Wiley and in Atlas of Science (www.atlasofscience.org).) H. Zhu, J. Cheng, D. Zhang, C. Liang, C. Reckmeier, H. Huang, A.L. Rogach, W.C.H. Choy*, "Room-Temperature Solution-Processed NiOx:PbI2 Nanocomposite Structures for Realizing High Performance Perovskite Photodetectors", ACS Nano, vol. 10, pp 6808–6815, 2016. H. Lu, J. Sun, H. Zhang, S. Lu, W.C.H. Choy*, "Room-temperature solution-processed and metal oxide-free nano-composite for the flexible transparent bottom electrode of perovskite solar cells", Nanoscale, vol. 8, pp 5946–5953, 2016. X. Zhang, H. Lin, H. Huang, C. Reckmeier, Y. Zhang, W.C.H. Choy*, A. Rogach*, "Enhancing the Brightness of Cesium Lead Halide Perovskite Nanocrystal Based Green Light-Emitting Devices through the Interface Engineering with Perfluorinated Ionomer", Nano Lett., vol. 16, pp 1415–1420, 2016. (highlighted in 19 Jan 2016, Nanotechweb.org/cws/article/tech/63746) S. Lu, X. Guan, X. Li, J. Liu, F. Huang, W.C.H. Choy*, "The incorporation of Thermionic Emission and Workfunction Tuning layer into Intermediate Connecting Layer for High Performance Tandem Organic Solar Cells", Nano Energy, vol.21, pp.123–132, 2016. J. Liu, S. Lu, L. Zhu, X. Li, H. Zhang, W. C. H. Choy*, "Perovskite-organic hybrid tandem solar cells using nanostructured perovskite layer as light window and PFN/doped-MoO3/MoO3 multi-layer interconnection layer", Nanoscale, 2016, vol. 8, pp. 3638-3646, 2016. H. Zhang, J. Cheng, F. Lin, H. He, J. Mao, K.S. Wong, A.K.Y. Jen*, W.C.H. Choy*, “Pinhole-free and Surface-Nanostructured NiOx Film by Room-Temperature Solution Process for High-Performance Flexible Perovskite Solar Cells with Good Stability and Reproducibility”, ACS Nano, vol. 10, pp. 1503-1511, 2016. W.C.H. Choy*, X. Ren, invited, "Plasmon-Electrical Effects on Organic Solar Cells by Incorporation of Metal Nanostructures", IEEE J. Selected Topics Quant. Elect., 10.1109/JSTQE.2015.2442679. (featured as the cover of IEEE J. Selected Topics Quant. Elect.) G. Luo, X. Ren, S. Zhang, H. Wu*, W.C.H. Choy*, Z. He*, Y. Cao, "Recent advances in organic photovoltaic: device structure and optical engineering optimization in nanoscale", Small, vol. 12, pp. 1547–1571, 2016.