Prof. Alex K Y JEN

BS National Tsing Hua University, Taiwan; PhD University of Pennsylvania, USA
Staff title
Lee Shau Kee Chair Professor of Materials Science
Chair Professor, Chemistry and Materials Science
Director, Hong Kong Institute for Clean Energy (HKICE)

Fellow, European Academy of Sciences
Member, Washington State Academy of Sciences
Fellow, American Association for the Advancement of Science
Fellow, The Materials Research Society
Fellow, The American Chemical Society
Fellow, The American Chemical Society, Div. of Polymeric Materials Science & Engineering
Fellow, The Optical Society of America
Fellow, The International Society of Optical Engineering

Professor Alex Jen is the Lee Shau Kee Chair Professor of Materials Science and Director of the Hong Kong Institute for Clean Energy. He is also the Chair Professor of Chemistry and Materials Science of the City University of Hong Kong. He had served as the Provost of CityU during 2016-2020. He received his B.S. from the National Tsing Hua University in Taiwan and Ph.D. from the University of Pennsylvania in USA. Before joining CityU, he had served as the Boeing-Johnson Chair Professor and Chair of the Department of Materials Science & Engineering at the University of Washington, Seattle. He was also appointed as the Chief Scientist for the Clean Energy Institute endowed by the Washington State Governor. He is a distinguished researcher with >1,000 publications, >87,000 citations, and an H-index of 151. He has co-invented 67 patents and invention disclosures. His interdisciplinary research covers organic/hybrid functional materials and devices for photonics, energy, sensors, and nanomedicine.

For his pioneering contributions in organic photonics and electronics, Professor Jen was elected as an Academician by both the European Academy of Sciences and the Washington State Academy of Sciences. He is also a Fellow of several professional societies, including AAAS, MRS, ACS, PMSE, OSA, SPIE. He was named by the Times Higher Education (THE) in 2018 as one of the 'Top 10 university researchers in Perovskite Solar Cell Research'. In addition, he was recognized by Thomson Reuters as one of the "World's Most Influential Scientific Minds of 2015 and 2016 and as a "Highly Cited Researcher" in Materials Science by Clarivate Analytics (Top 1% in the world), consecutively in 2014-2022.

He is the recipient of the “Outstanding Research Award” from CityU in 2021, and had been appointed as the Changjiang Endowed Chair by the Chinese Ministry of Education, as a Distinguished Chair Professor by Zhejiang University, a World Class University Professor by the Korean Research Foundation, and a Distinguished Chair Professor by the National Taiwan University. He had demonstrated strong capability in technology transfer by participating in founding five start-up companies, and was the founder of the Hong Kong Institute for Clean Energy at CityU and the Institute of Advanced Materials for Energy (i-AME) at the University of Washington.

Professional Experience

Director, Hong Kong Institute for Clean Energy, 2021-current
Lee Shau Kee Chair Professor, City University of Hong Kong, 2020-Current
Chair Professor, City University of Hong Kong, 2016-Current
Provost, City University of Hong Kong, 2016-2020
Chief Scientist, Clean Energy Institute, Univ. of Washington, 2013-2016
Chair, Dept. of Materials Science & Engineering, Univ. of Washington, 2007-2016
Director, Institute of Advanced Materials for Energy, 2011-2016
Director, Institute for Advanced Materials & Technology, Univ. of Washington, 2006-2011
Acting Chair, Dept. of Materials Science & Engineering, Univ. of Washington, 2005-2007
Boeing-Johnson Chair Professor, Dept. of Materials Science & Engineering, Univ. of Washington, 2000-2016
Associate Professor, Dept. of Chemistry, Northeastern Univ., Boston, MA., 1997-1999
Vice President, Optical Materials Division, ROI Technology, 1995-1996
Group Leader-Senior Scientist, NLO Materials, EniChem America, 1990-1994

Other Information


Partial List from more than 1000 Publications
Full publications: 
Prof. Alex JEN - CityU Scholars | A Research Hub of Excellence

  • "Hydrogen-bond-bridged intermediate for perovskite solar cells with enhanced efficiency and stability." F. Li; X. Deng; Z. Shi; S. Wu; Z. Zeng; D. Wang; Y. Li; F. Qi; Z. Zhang; Z. Yang; S.-H. Jang; F.R. Lin; S.W. Tsang; X.-K. Chen; A.K.Y. Jen. Photonics 202317 (6), 478-484.
  • "Suppressed recombination loss in organic photovoltaics adopting a planar–mixed heterojunction architecture." K. Jiang; J. Zhang; C. Zhong; F.R. Lin; F. Qi; Q. Li; Z. Peng; W. Kaminsky; S.-H. Jang; J. Yu; X. Deng; H. Hu; D. Shen; F. Gao; H. Ade; M. Xiao; C. Zhang; A.K.Y. Jen. Energy 20227 (11), 1076-1086.
  • "Advances and challenges in understanding the microscopic structure–property–performance relationship in perovskite solar cells." Y. Zhou; L.M. Herz; A.K.Y. Jen; M. Saliba. Energy 20227 (9), 794-807.
  • “Dilution Effect for Highly Efficient Multiple-Component Organic Solar Cells”, L. Zuo, S. B. Jo, Y. K. Li, Y. Meng, R. J Stoddard, Y. Liu, F. Lin, X. Shi, F. Liu, H. W. Hillhouse, D. S. Ginger, H. Chen, A. K-Y. Jen, Nature Nanotech2022, 17, 53.
  • “2D Metal-Organic Framework for Stable Perovskite Solar Cells with Minimized Lead Leakage”, Wu, S.; Li, Z.; Li, M. Q.; Diao, Y.; Lin, F.; Liu, T.; Zhang, J.; Tieu, P.; Gao, W.; Qi, F.; Pan, X.; Xu, Z.; Zhu, Z.; Jen, A. K. Y., Nature Nanotech., 2020,15, 934.
  • "Active self-assembly of piezoelectric biomolecular films via synergistic nanoconfinement and in-situ poling." Z. Zhang; X. Li; Z. Peng; X. Yan; S. Liu; Y. Hong; Y. Shan; X. Xu; L. Jin; B. Liu; X. Zhang; Y. Chai; S. Zhang; A.K.Y. Jen; Z. Yang. Commun. 202314 (1), 4094.
  • "Importance of structural hinderance in performance–stability equilibrium of organic photovoltaics." B. Fan; W. Gao; X. Wu; X. Xia; Y. Wu; F.R. Lin; Q. Fan; X. Lu; W.J. Li; W. Ma; A.K.Y. Jen. Commun. 202213 (1), 5946.
  • “Highly Efficient and Stable Perovskite Solar Cells Enabled by Low-Dimensional Perovskitoids”, J. Chen, Y. Yang, H. Dong, J. Li, X. Zhu, J. Xu, F. Pan, F. Yuan, J. Dai, B. Jiao, X. Hou, A. K.-Y. Jen, Z. Wu,  Adv. 2022, 8, eabk2722.
  • "Renewed Prospects for Organic Photovoltaics." G. Zhang; F.R. Lin; F. Qi; T. Heumüller; A. Distler; H.-J. Egelhaaf; N. Li; P.C.Y. Chow; C.J. Brabec; A.K.Y. Jen; H.-L. Yip. Rev. 2022122 (18), 14180-14274.
  • “Designs from Single Junctions, Heterojunctions to Multijunctions for High-Performance Perovskite Solar Cells”, X. Wu, B. Li, Z. Zhu, C-C. Chueh, and A. K.-Y. Jen,  Soc. Rev., 202150, 13090.
  • “Selenium-Containing Organic Photovoltaic Materials”, B. Fan, F. Lin, X. Wu, Z. Zhu, and A. K.-Y. Jen,  Chem. Res.202154, 3906.
  • “Interface Engineering in Solution-Processed Thin-Film Solar Cells”, F.-Z. Li, A. K-Y. Jen,  Mater. Res.2022,
  • “Pseudo-Bilayer Architecture Enables High-Performance Organic Solar Cells with Enhanced Exciton Diffusion Length”, Jiang, K.; Zhang, J.; Peng, Z.; Lin, F.; Wu, S.; Li, Z.; Chen, Y.; Yan, H.; Ade, H.; Zhu, Z.; Jen, A. K. Y., Nature Commun. 2021,12, 468.
  • “The Coupling and Competition of Crystallization and Phase Separation, Correlating Thermodynamics and Kinetics in OPV Morphology and Performances”, Wang, Z.; Gao, K.; Kan, Y.; Zhang, M.; Qiu, C.; Zhu, L.; Zhao, Z.; Peng, X.; Feng, Z.; Gu, X.; Jen, A. K. Y.; Tang, B. Z.; Cao, Y.; Zhang, Y.; Liu, F., Nature Commun. 2021,12, 232.
  • “Water-Resistant Perovskite Nanodots Enable Robust Two-Photon Lasing in Aqueous Environment”, Li, S.; Lei, D.; Ren, W.; Guo, X.; Wu, S.; Zhu, Y.; Rogach, A. L.; Chhowalla, M.; Jen, A. K. Y., D. Y. Lei, Nature Commun., 2020,11, 1192.
  • “Highly Efficient All-inorganic Perovskite Solar Cells with Suppressed Non-radiative Recombination by a Lewis Base”, Wang, J.; Zhang, J.; Zhou, Y.; Liu, H.; Xue, Q.; Li, X.; Chueh, C. C.; Yip, H. L.; Zhu, Z.; Jen, A. K. Y., Nature Commun., 2020,11, 177.
  • “Non-fullerene acceptors for organic solar cells”, C. Yan, S. Barlow, Z. Wang, H. Yan, A. K.-Y Jen, S. R. Marder and X. Zhan, Nature Review Mater., 20183, 18003.
  • “Kinetic Control of Recombination in Organic Photovoltaics: The Role of Spin”, A. Rao, P. C. Y. Chow, S. Gélinas­, C. W. Schlenker, C.-Z. Li, H.-L. Yip, D. S. Ginger, A. K-Y. Jen, R. H. Friend, Nature2013500, 435.
  • “Flexible and Twistable Non-Volatile Memory Cell Array with All Organic One Diode-One Resistor Architecture”, Y. Ji, D. F. Zeigler, D. S. Lee, H. Choi, A. K.-Y. Jen, H. C. Ko, and T.-W. Kim, Nature Commun.20134, 2707.
  • “Confining and Controlling Photoreactive Molecules”, M. Kim, J. N. Hohman, Y. Cao, K. N. Houk, H. Ma, A. K.-Y. Jen, and P. S. Weiss, Science2011331, 1312.
  • “Record Electro-optic Coefficient of 170 pm/V and Vπ of 1V at 1.55 mm in Hybrid Crosslinkable Polymer/Sol-gel Waveguide Modulators”, Y. Enami, C. T. DeRose, D. Mathine, C. Loychik, C. Greenlee, R. A. Norwood, T. D. Kim, J. Luo, Y. Tian, A. K-Y. Jen, and N. Peyghambarian, Nature Photonics20071, 180.
  • “Terahertz All-Optical Modulator in Silicon”, M. Hochberg, T. Bachr-Jones, G. Wang, J. Parker, K. Harvard, J. D. Luo, B. Chen, Z. Shi, R. Lawson, P. Sullivan, A. K-Y. Jen, L. Dalton, and A. Scherer, Nature Materials2006,5(9), 703.
  • “Molecular Biomimetics: Nanotechnology through Biology”, M. Sarikaya, C. Tamerler, A. K-Y. Jen, K. Schulten, and F. Baneyx, Nature Materials20032, 577.
  • “Design and Synthesis of Chromophores and Polymers for Electro-optic and Photorefractive Applications”, S. R. Marder, B. Kippelen, A. K-Y. Jen, and N. Peyghambarian, Nature1997388, 845.
  • “Deciphering the Roles of MA-Based Volatile Additives for α-FAPbI3 to Enable Efficient Inverted Perovskite Solar Cells.” L. Bi; Q. Fu; Z. Zeng; Y. Wang; F.R. Lin; Y. Cheng; H.-L. Yip; S.W. Tsang; A.K.Y. Jen. Am. Chem. Soc. 2023145 (10), 5920-5929.
  • "Co-assembled Monolayers as Hole-Selective Contact for High-Performance Inverted Perovskite Solar Cells with Optimized Recombination Loss and Long-Term Stability." X. Deng; F. Qi; F. Li; S. Wu; F.R. Lin; Z. Zhang; Z. Guan; Z. Yang; C.-S. Lee; A.K.Y. Jen. Chem. Int. Ed. 202261 (30), e202203088.
  • "Correlation of Local Isomerization Induced Lateral and Terminal Torsions with Performance and Stability of Organic Photovoltaics." B. Fan; W. Gao; R. Zhang; W. Kaminsky; F.R. Lin; X. Xia; Q. Fan; Y. Li; Y. An; Y. Wu; M. Liu; X. Lu; W.J. Li; H.-L. Yip; F. Gao; A.K.Y. Jen. Am. Chem. Soc. 2023145 (10), 5909-5919.
  • "Dimer Acceptor Adopting a Flexible Linker for Efficient and Durable Organic Solar Cells." F. Qi; Y. Li; R. Zhang; F.R. Lin; K. Liu; Q. Fan; A.K.Y. Jen. Chem. Int. Ed. 202362 (21), e202303066.
  • "Understanding the Role of Removable Solid Additives: Selective Interaction Contributes to Vertical Component Distributions." B. Fan; W. Zhong; W. Gao; H. Fu; F.R. Lin; R.W.Y. Wong; M. Liu; C. Zhu; C. Wang; H.-L. Yip; F. Liu; A.K.Y. Jen. Mater. 202335 (32), 2302861.
  • "A Top-Down Strategy to Engineer ActiveLayer Morphology for Highly Efficient and Stable All-Polymer Solar Cells." H. Fu; Z. Peng; Q. Fan; F.R. Lin; F. Qi; Y. Ran; Z. Wu; B. Fan; K. Jiang; H.Y. Woo; G. Lu; H. Ade; A.K.Y. Jen. Mater. 202234 (33), 2202608.
  • "Highly Efficient Flexible Perovskite Solar Cells through Pentylammonium Acetate Modification with Certified Efficiency of 23.35%." D. Gao; B. Li; Z. Li; X. Wu; S. Zhang; D. Zhao; X. Jiang; C. Zhang; Y. Wang; Z. Li; N. Li; S. Xiao; W.C.H. Choy; A.K.Y. Jen; S. Yang; Z. Zhu. Mater. 202335 (3), 2206387.
  • "Intramolecular Chloro–Sulfur Interaction and Asymmetric Side-Chain Isomerization to Balance Crystallinity and Miscibility in All-Small-Molecule Solar Cells." W. Gao; M. Jiang; Z. Wu; B. Fan; W. Jiang; N. Cai; H. Xie; F.R. Lin; J. Luo; Q. An; H.Y. Woo; A.K.Y. Jen. Chem. Int. Ed. 202261 (33), e202205168.
  • "Achieving 19% Power Conversion Efficiency in Planar-Mixed Heterojunction Organic Solar Cells Using a Pseudosymmetric Electron Acceptor." W. Gao; F. Qi; Z. Peng; F.R. Lin; K. Jiang; C. Zhong; W. Kaminsky; Z. Guan; C.-S. Lee; T.J. Marks; H. Ade; A.K.Y. Jen. Mater. 202234 (32), 2202089.
  • "π-Expanded Carbazoles as Hole-Selective Self-Assembled Monolayers for High-Performance Perovskite Solar Cells." W. Jiang; F. Li; M. Li; F. Qi; F.R. Lin; A.K.Y. Jen. Chem. Int. Ed. 202261 (51), e202213560.
  • “Low‐Bandgap Organic Bulk‐Heterojunction Enabled Efficient and Flexible Perovskite Solar Cells”, S. Wu, Z. Li, J. Zhang, X. Wu, X. Deng, Y. Liu, J. Zhou, C. Zhi, X. Yu, W. CH Choy, Z. Zhu, A. K‐Y. Jen,  Mater., 202133 (51), 2105539.
  • “Multi-Selenophene-Containing Narrow Bandgap Polymer Acceptors for All-Polymer Solar Cells with over 15 % Efficiency and High Reproducibility”, Fan, Q., Fu, H., Wu, Q., Wu, Z., Lin, F., Zhu, Z., Jen, A. K. Y.  Chem. Inter. Ed., 2021, 60, 15935.
  • “Synergistical Dipole-Dipole Interaction Induced Self-Assembly of Phenoxazine-Based Hole-Transporting Materials for Efficient and Stable Inverted Perovskite Solar Cells”, Cai, N., Li, F., Chen, Y., Luo, R., Hu, T., Lin, F., Jen, A. K. Y.  Chem. Inter. Ed., 2021, 60, 20437.
  • “High Efficiency (15.8%) All-Polymer Solar Cells Enabled by a Regioregular Narrow Bandgap Polymer Acceptor”, Fu, H.; Li, Y.; Yu, J.; Wu, Z.; Fan, Q.; Lin, F.; Woo, H. Y.; Gao, F.; Zhu, Z.; Jen, A. K. Y.,  Am. Chem. Soc., 2021, 143 (7), 2665.
  • Qi, F.; Jiang, K.; Lin, F.; Wu, Z.; Zhang, H.; Gao, W.; Li, Y.; Cai, Z.; Woo, H. Y.; Zhu, Z.; Jen, A. K. Y., Over 17% Efficiency Binary Organic Solar Cells with Photoresponses Reaching 1000 nm Enabled by Selenophene-Fused Nonfullerene Acceptors. ACS Energy Lett., 2021,6 (1), 9.
  • “Asymmetric Acceptors Enabling Organic Solar Cells to Achieve an over 17% Efficiency: Conformation Effects on Regulating Molecular Properties and Suppressing Nonradiative Energy Loss”, Gao, W.; Fu, H.; Li, Y.; Lin, F.; Sun, R.; Wu, Z.; Wu, X.; Zhong, C.; Min, J.; Luo, J.; Woo, H. Y.; Zhu, Z.; Jen, A. K. Y.,  Energy Mater., 2021,11 (4), 2003177.
  • “Low-Bandgap Porphyrins for Highly Efficient Organic Solar Cells: Materials, Morphology, and Applications”, Gao, K.; Kan, Y.; Chen, X.; Liu, F.; Kan, B.; Nian, L.; Wan, X.; Chen, Y.; Peng, X.; Russell, T. P.; Cao, Y.; Jen, A. K. Y.,  Mater. 2020,32 (32), 1906129.
  • “Regulating Surface Termination for Efficient Inverted Perovskite Solar Cells with Greater Than 23% Efficiency”, Li, F.; Deng, X.; Qi, F.; Li, Z.; Liu, D.; Shen, D.; Qin, M.; Wu, S.; Lin, F.; Jang, S. H.; Zhang, J.; Lu, X.; Lei, D.; Lee, C. S.; Zhu, Z.; Jen, A. K. Y.,  Am. Chem. Soc. 2020,142 (47), 20134.
  • "18.2%-efficient ternary all-polymer organic solar cells with improved stability enabled by a chlorinated guest polymer acceptor." R. Sun; T. Wang; Q. Fan; M. Wu; X. Yang; X. Wu; Y. Yu; X. Xia; F. Cui; J. Wan; X. Lu; X. Hao; A.K.Y. Jen; E. Spiecker; J. Min. Joule 20237 (1), 221-237.
  • "Prospects and challenges for perovskite-organic tandem solar cells." S. Wu; M. Liu; A.K.Y. Jen. Joule 20237 (3), 484-502.
  • “Modulation of Defects and Interfaces through Alkylammonium Interlayer for Efficient Inverted Perovskite Solar Cells”, Wu, S.; Zhang, J.; Li, Z.; Liu, D.; Qin, M.; Cheung, S. H.; Lu, X.; Lei, D.; So, S. K.; Zhu, Z.; Jen, A. K. Y., Joule, 2020,4, 1248.
  • “Approaching 16% Efficiency in All-Small-Molecule Organic Solar Cells Based on Ternary Strategy with a Highly Crystalline Acceptor”, L. Nian, Y. Kan, K. Gao, M. Zhang, N. Li, G. Q. Zhou, S. B. Jo, X. L. Shi, F. Lin, Q. K. Rong, F. Liu, G. F. Zhou, A. K-Y. Jen, Joule, 20204(10), 2223.
  • “Fullerene-anchored core-shell ZnO nanoparticles for efficient and stable dual-sensitized perovskite solar cells”, K. Yao, S. Leng, Z. Liu, L. Fei, Y. Chen, S. Li, N. Zhou, J. Zhang, Y.-X Xu, L. Zhou, H. Huang and A. K.-Y Jen, Joule20193, 417.
  • “Hybrid Perovskite-Organic Flexible Tandem Solar Cell Enabling Highly Efficient Electrocatalysis Overall Water Splitting”, Li, Z.; Wu, S.; Zhang, J.; Lee, K. C.; Lei, H.; Lin, F.; Wang, Z.; Zhu, Z.; Jen, A. K. Y.,  Energy Mater. 2020,10 (18), 2000361.
  • “A Non-fullerene Acceptor with Enhanced Intermolecular π-Core Interaction for High-Performance Organic Solar Cells”, Lin, F.; Jiang, K.; Kaminsky, W.; Zhu, Z.; Jen, A. K. Y.,  Am. Chem. Soc. 2020,142 (36), 15246.
  • “Modulation of Defects and Interfaces through Large Alkylammonium Interlayer for Efficient Inverted Perovskite Solar Cells”, S. Wu, J. Zhang, Z. Li, D. Liu, M. Qin, S. H. Cheung, X. Lu, D. Lei, S. K. So, Z. Zhu, and A. K-Y. Jen, Joule20204(6), 1248.
  • “Approaching 16% Efficiency in All-Small-Molecule Organic Solar Cells Based on Ternary Strategy with a Highly Crystalline Acceptor”, Nian, L.; Kan, Y.; Gao, K.; Zhang, M.; Li, N.; Zhou, G.; Jo, S. B.; Shi, X.; Lin, F.; Rong, Q.; Liu, F.; Jen, A. K. Y., Joule, 2020,4 (10), 2223.
  • “Graphdiyne Derivative as Multifunctional Solid Additive in Binary Organic Solar Cells with 17.3% Efficiency and High Reproductivity”, Liu, L.; Kan, Y.; Gao, K.; Wang, J.; Zhao, M.; Chen, H.; Zhao, C.; Jiu, T.; Jen, A. K. Y.; Li, Y.,  Mater., 2020,32, 1907604.
  • “Adding a Third Component with Reduced Miscibility and Higher LUMO Level Enables Efficient Ternary Organic Solar Cells”, Ma, R.; Liu, T.; Luo, Z.; Gao, K.; Chen, K.; Zhang, G.; Gao, W.; Xiao, Y.; Lau, T. K.; Fan, Q.; Chen, Y.; Ma, L. K.; Sun, H.; Cai, G.; Yang, T.; Lu, X.; Wang, E.; Yang, C.; Jen, A. K. Y.; Yan, H., ACS Energy Lett., 2020,5, 2711.
  • “Coordination Engineering of Single-Crystal Precursor for Phase Control in Ruddlesden-Popper Perovskite Solar Cells”, Qin, Y.; Zhong, H.; Intemann, J. J.; Leng, S.; Cui, M.; Qin, C.; Xiong, M.; Liu, F.; Jen, A. K. Y.; Yao, K.,  Energy Mater. 2020,10 (16), 1904050.
  • “Biomimetic Electrodes for Flexible Organic Solar Cells with Efficiencies over 16%”, Qu, T. Y.; Zuo, L. J.; Chen, J. D.; Shi, X.; Zhang, T.; Li, L.; Shen, K. C.; Ren, H.; Wang, S.; Xie, F. M.; Li, Y. Q.; Jen, A. K. Y.; Tang, J. X., Optical Mater., 2020,8, 2000669.
  • “Dopant-Free Crossconjugated Hole-Transporting Polymers for Highly Efficient Perovskite Solar Cells”, Sun, X.; Deng, X.; Li, Z.; Xiong, B.; Zhong, C.; Zhu, Z.; Jen, A. K. Y.,  Sci. 2020,7 (13), 1903331.
  • “Recent Advances in Molecular Design of Functional Conjugated Polymers for High-Performance Polymer Solar Cells”, Z. Li, C.-C. Chueh, A. K.-Y. Jen”,  Polym. Sci.201999, 101175.
  • “Cationic Polyelectrolyte for Anionic Cyanines: An Efficient Way to Translate Molecular Properties into Material Properties”, Z. Li, A. A. Syed, P. Zhao, J. C. Yang, R. Sharma, T. R. Ensley, J. D. Matichak, I. Davydenko, S.-H. Jang, D. J. Hagan, S. R. Marder, E. W. Van Stryland, and A. K.-Y. Jen,  Am. Chem. Soc.2019141 (43), 17331.
  • “Long-lived, non-geminate, radiative recombination of photogenerated charges in a Polymer/Small-molecule acceptor photovoltaic blend”, M. E. Ziffer, S. Jo, H. Zhong, L. Ye, H. Liu, F. Lin, J. Zhang, X. Li, H. Ade, A. K.-Y Jen and D. S. Ginger,  Am. Chem. Soc.2018140, 9996.
  • “Dithienopicenocarbazole-based acceptors for efficient organic solar cells with optoelectronic response over 1000 nm and an extremely low energy loss”, Z. Yao, X. Liao, K. Gao, F. Lin, X. Xu, X. Shi, L. Zuo, F. Liu, Y. Chen and A. K.-Y Jen,  Am. Chem. Soc., 140, 2054-2057 (2018).
  • “A Dopant-Free Hole-Transporting Material with a C3h Symmetrical Truxene Core for Highly Efficient Perovskite Solar Cells”, C. Huang, W. F. Fu, C.-Z. Li, Z. Q. Zhang, W. M. Qiu, M. M. Shi, P. Heremans, A. K.-Y. Jen, and H. Z. Chen,  Am. Chem. Soc.2016, 138 (8), 2528.
  • “Rational Design of Dipolar Chromophore with Intrinsic Radical Character as an Efficient Dopant-free Hole-Transporting Material for Perovskite Solar Cells”, Z. Li, Z. Zhu, C.-C. Chueh, S. B. Jo, J. D. Luo, S.-H. Jiang, A. K.-Y. Jen,  Am. Chem. Soc.2016138, 11833.
  • “Facile Incorporation of Pd(PPh3)2Hal Substituents into Polymethines, Merocyanines, and Perylene Diimides as a Means of Suppressing Intermolecular Interactions”, I. Davydenko, S. Barlow, R. Sharma, S. Benis, J. Simon, T. G. Allen, M. W. Cooper, V. Khrustalev, E.V. Jucov, R. Castañeda, C. Ordonez, Z. Li, S.-H. Chi, S.-H. Jang, T. C. Parker, T. V. Timofeeva, J. W. Perry, A. K.-Y. Jen, D. J. Hagan, E. W. Van Stryland, and S. R. Marder,  Am. Chem. Soc.2016138, 10112.
  • “Supramolecular Assembly of Complementary Cyanine Salt J-Aggregates”, Z. Li, S. Mukhopadhyay, S.-H. Jang, J.-L. Brédas, and A. K.-Y. Jen,  Am. Chem. Soc.2015137, 11920.
  • “Influence of Regio- and Chemo-selectivity on the Properties of Fluoro-Substituted Thienothiophene and Benzodithiophene Copolymers”, H. Zhong, C.-Z. Li, J. Carpenter, H. Ade, and A. K.-Y. Jen,  Am. Chem. Soc.2015137(24), 7616.
  • “Crystalline Co-assemblies of Functional Fullerenes in Methanol with Enhanced Charge Transport”, J. Zhang, C.-Z. Li, S. Williams, S. Liu, T. Zhao, and A. K-Y. Jen,  Am. Chem. Soc.2015137, 2167.
  • “Tailor-making low-cost spiro[fluorene-9,9′-xanthene]-based 3D oligomers for perovskite solar cells”, B. Xu, J. Zhang, Y. Hua, P. Liu, L. Wang, C. Ruan, Y. Li, G. Boschloo, E. M. J. Johansson, L. Kloo, A. Hagfeldt, A. K.-Y Jen and L. Sun, Chem20172, 676.
  • “Ternary Non-Fullerene Polymer Solar Cells with 13.51% Efficiency and a Record- High Fill Factor of 78.13%”, L. Nian, Y. Y. Kan, H. T. Wang, K. Gao, B. Xu, Q. K. Rong, R. Wang, J. Wang, F. Liu, J. W. Chen, G. F. Zhou, T. P. Russel, A. K-Y. Jen, Energy & Environ. Sci., 201811(12), 3392.
  • "The Molecular Ordering and Double-Channel Carrier Generation of Nonfullerene Photovoltaics within Multi-Length-Scale Morphology." J. Xu; S.B. Jo; X. Chen; G. Zhou; M. Zhang; X. Shi; F. Lin; L. Zhu; T. Hao; K. Gao; Y. Zou; X. Su; W. Feng; A.K.Y. Jen; Y. Zhang; F. Liu. Mater. 202234 (16), 2108317.
  • "Buried-Interface Engineering of Conformal 2d/3d Perovskite Heterojunction for Efficient Perovskite/Silicon Tandem Solar Cells on Industrially Textured Silicon." F. Zhang; B. Tu; S. Yang; K. Fan; Z. Liu; Z. Xiong; J. Zhang; W. Li; H. Huang; C. Yu; K. Yao; A.K.Y. Jen. Mater. 2023, 2303139.
  • “Low-Bandgap Porphyrins for Highly Efficient Organic Solar Cells: Materials, Morphology, and Applications”, K. Gao, Y. Kan, X. Chen, F. Liu, B. Kan, L. Nian, X. Wan, Y. Chen, X. Peng, T. P. Russell, Y. Cao, A. K.‐Y. Jen,  Mater.202032, 1906429.
  • “Organic Semiconductors at the University of Washington: Advancements in Materials Design and Synthesis and toward Industrial Scale Production”, Y. Huang, D. L. Elder, A. L. Kwiram, S. A. Jenekhe, A. K.-Y. Jen, L. R. Dalton, and X. K. Luscombe,  Mater.201931, 1904239.
  • “A 0D/3D Heterostructured All‐Inorganic Halide Perovskite Solar Cell with High Performance and Enhanced Phase Stability” F. Bai, J. Zhang, Y. Yuan, H. Liu, X. Li, C‐C. Chueh, H. Yan, Z. Zhu, A. K‐Y. Jen,  Mater. 2019, 1904735.
  • “Boosting the Performance of Environmentally Friendly Quantum Dot-Sensitized Solar Cells over 13% Efficiency by Dual Sensitizers with Cascade Energy Structure”, Z. Pan, L. Yue, H. Rao, J. Zhang, X. Zhong, Z. Zhu, A. K‐Y. Jen,  Mater. 2019, 1903696.
  • “Over 12% efficiency nonfullerene all-small-molecule organic solar cells with sequentially evolved multilength scale morphologies”, K. Gao, S. B. Jo, X. Shi, L. Nian, M. Zhang, Y. Kan, F. Lin, B. Kan, B. Xu, Q. Rong, L. Shui, F. Liu, X. Peng, G. Zhou, Y. Cao and A. K.-Y. Jen, Adv Mater201931, 1807842.
  • “Highly efficient semitransparent solar cells with selective absorption and tandem architecture”, L. Zuo, X. Shi, W. Fu and A. K.-Y. Jen, Adv Mater2019, 1901683.
  • “Near-Infrared Electron Acceptors with Fluorinated Regioisomeric Backbone for Highly Efficient Polymer Solar Cells”, F. X. Chen, J. Q. Xu, Z. X. Liu, M. Chen, R. X. Xia, Y. C. Yang, T. K. Lau, Y. Z. Zhang, X. H. Liu, H. L. Yip, A. K.-Y. Jen, H. Z. Chen, C. Z. Li,  Mater.201830(52), 1803769.
  • “Intensive exposure of functional rings of a polymeric hole-transporting material enables efficient perovskite solar cells”, L. Zhang, C. Liu, J. Zhang, X. Li, C. Cheng, Y. Tian, A. K. Y. Jen and B. Xu,  Mater201830(39), 1804028.
  • “Toward perovskite solar cell commercialization: A perspective and research roadmap based on interfacial engineering”, A. Rajagopal, K. Yao and A. K.-Y. Jen,  Mater201830(32), 1800455.
  • “Tackling energy loss for high-efficiency organic solar cells with integrated multiple strategies”, L. Zuo, X. Shi, S. B. Jo, Y. Liu, F. Lin and A. K.-Y Jen,  Mater201830(16), 1706816.
  • “Realizing efficient lead-free formamidinium tin triiodide perovskite solar cells via a sequential deposition route”, Z. Zhu, C.-C Chueh, N. Li, and A. K.-Y Jen, Adv Mater201830(6), 1703800.
  • “Ideal bandgap Organic-Inorganic hybrid perovskite solar cells”, Z. Yang, A. Rajagopal and A. K.-Y Jen,  Mater.201729(47), 1704418.
  • “Highly efficient porphyrin-based OPV/Perovskite hybrid solar cells with extended photoresponse and high fill factor”, K. Gao, Z. Zhu, B. Xu, S. B. Jo, Y. Kan, X. Peng and A. K. -Y Jen,  Mater.201729(47), 1703980.
  • “High-efficiency nonfullerene organic solar cells with a parallel tandem configuration”, L. Zuo, J. Yu, X. Shi, F. Lin, W. Tang and A. K.-Y Jen,  Mater.201729(34), 1702547.
  • “Highly efficient Perovskite-Perovskite tandem solar cells reaching 80% of the theoretical limit in photovoltage”, A. Rajagopal, Z. Yang, S. B. Jo, I. L. Braly, P. -W Liang, H. W. Hillhouse and A. K. -Y Jen,  Mater.201729(34), 1702140.
  • “SrCl2 derived perovskite facilitating a high efficiency of 16% in hole-conductor-free fully printable mesoscopic perovskite solar cells”, H. Zhang, H. Wang, S. T. Williams, D. Xiong, W. Zhang, C.-C Chueh, W. Chen and A. K.-Y Jen,  Mater.201729(15), 1606608.
  • “Toward all room-temperature, solution-processed, high-performance planar perovskite solar cells: A new scheme of pyridine-promoted perovskite formation”, H. Zhang, J. Cheng, D. Li, F. Lin, J. Mao, C. Liang, A. K. -Y Jen, M. Grätzel and W. C. H. Choy,  Mater.201729(13), 1604695.
  • “CuGaO2: A promising inorganic hole-transporting material for highly efficient and stable perovskite solar cells”, H. Zhang, H. Wang, W. Chen and A. K.-Y Jen,  Mater.201729(8), 1604984.
  • “Rigidifying Nonplanar Perylene Diimides by Ring Fusion Toward Geometry-Tunable Acceptors for High-Performance Fullerene-Free Solar Cells”, H. L. Zhong, C.-H. Wu, C.-Z. Li, J. Carpenter, C.-C. Chueh, J.-Y. Chen, H. Ade, and A. K.-Y. Jen,  Mater.201628(5), 951.
  • “Fluorescent Mechanical Damage Sensors for Epoxy Composites by Mechanochemical Activation”, Z. Li, R. Toivola, F. Ding, J. Yang, P. N. Lai, T. Howie, G. Georgeson, S.-H. Jang, X. S. Li, B. D. Flinn, and A. K.-Y. Jen,  Mater.201628, 6592.
  • “Highly Efficient Organic Solar Cells with Improved Vertical Donor-Acceptor Compositional Gradient via an Inverted Off-Center Spinning Method”, J. Huang, J. Carpenter, C. Z. Li, J.-S. Yu, H. Ade, and A. K-Y. Jen,  Mater.2016, 28(5), 967.
  • “Highly Efficient and Stable Inverted Perovskite Solar Cells using Highly Crystalline SnO2 Nanocrystals as the Robust Electron-Transporting Layer”, Z. L. Zhu, Y. Bai, X. Liu, C.-C. Chueh, S. H. Yang, and A. K.-Y. Jen,  Mater., 201628, 6478.
  • “A Low-Temperature, Solution-Processable, Cu-Doped Nickel Oxide Hole-Transporting Layer via the Combustion Method for High-Performance Thin-Film Perovskite Solar Cells”, J. W. Jung, C.C. Chueh, A. K-Y. Jen,  Mater.201527, 7874.
  • “High-Performance and Environmentally Stable Planar Heterojunction Perovskite Solar Cells Based on a Solution-Processed Copper-Doped Nickel Oxide Hole Transporting Layer”, J. H. Kim, P.-W. Liang, S. T. Williams, N. Cho, C.-C. Chueh, M. S. Glaz, D. S. Ginger, and A. K.-Y. Jen,  Mater., 201527(4),695.
  • “Fluoro-Substituted n-Type Conjugated Polymer for Additive-Free All-Polymer Bulk Heterojunction Solar Cells with Efficiency of 6.71%”, J. W. Jung, J. Woong Jo, C.-C. Chueh, F. Liu, W. H. Jo, T. P. Russell and A. K.-Y. Jen,  Mater.20157(21), 3310.
  • “Ag-incorporated organic-inorganic perovskite films and planar heterojunction solar cells", Q. Chen, L. Chen, F. Ye, T. Zhao, F. Tang, A. Rajagopal, Z. Jiang, S. Jiang, A. K.-Y Jen, Y. Xie, J. Cai and L. Chen, Nano Lett.201717, 3231.
  • “Hexaazatrinaphthylene Derivatives: Efficient Electron-Transporting Materials with Tunable Energy Levels for Inverted Perovskite Solar Cells”, D. B. Zhao, Z. Zhu, M.-Y. Kuo, C.-C. Chueh, and A. K.-Y. Jen  Chem. Int. Ed.201655, 1.


  • Patents & Invention Records: 67
  • Publications: >1,000
  • H-index: 151
  • Citations: >87,000
  • Top scientists in China in the category of Chemistry (Rank #5) and Materials Science (Rank #18), 2023.
  • Lee Shau Kee Endowed Chair Professorship, City University of Hong Kong, 2022.
  • President Award, City University of Hong Kong, 2022
  • Outstanding Research Award, City University of Hong Kong, 2021.
  • Highly Cited Researcher by Clarivate Analytics (Top 1% in the world in Materials Science), 2014-2022.
  • Name by Times Higher Education (THE) as one of the “Top 10 Researchers in the World Working on Perovskite Solar Cells” 2018.
  • The World's Most Influential Scientific Minds by Thomson Reuters, 2015, 2016
  • Honorary Professor, National Chiao Tung University, Taiwan, ROC, 2018
  • Distinguished Alumni Award, College of Science, National Tsing Hua University, Taiwan, ROC, 2017
  • BK21+ Distinguished Professor, Korea University, 2015-2019
  • Distinguished Chair Professor, Materials Science & Engineering, National Taiwan University, 2013
  • MRS Fellow, The Materials Research Society, 2012
  • Chair Professor, Polymer Science & Engineering, Zhejiang University, China, 2012
  • Member, Washington State Academy of Sciences, 2011
  • ACS Fellow, The American Chemical Society, 2011
  • World-Class University Professor, Korea University, Korean Research Foundation, Korea, 2009
  • Honorary Professor, East China University of Science & Technology, China, 2009
  • PMSE Fellow, The American Chemical Society, Div. of Polymeric Materials Science & Engineering, 2009
  • Board of Directors, Washington Technology Center, Appointed by Governor of Washington State, 2007
  • Faculty of Research Innovator Award, College of Engineering, University of Washington, 2007
  • Changjiang Endowed Chair Professor, Ministry of Education, China, 2007
  • OSA Fellow, The Optical Society of America, 2007
  • SPIE Fellow, The International Society of Optical Engineering, 2006
  • AAAS Fellow, American Association for the Advancement of Science, 2005
  • Member of Advisory Board, Institute of Chemistry, Academia Sinica, Taiwan, 2002-Present
  • Boeing-Johnson Endowed Chair, University of Washington, 1999-Present
  • Industrial Fellow (rank as full professor), Northwestern University, 1995-2000
  • Founder’s Award, ROITech, 1995
  • Outstanding Achievement Award, EniChem America, 1994
  • President’s Award, EniChem America, 1989
  • Rohm & Hass Research Fellowship, Dept. of Chemistry, University of Pennsylvania, 1981
Staff Image
Prof Alex K Y JEN
Contact Information
Office: MMW-6418
Phone: +(852)-3442-8080
Fax: +(852)-3442-8472
Web: Alex Jen Research Group | CityU HK | 香港城市大學 (
Research Interests

Utilizing molecular, polymeric, and biomacromolecular self-assembly to create ordered arrangement of organic and inorganic functional materials for photonics, opto-electronics, nanomedicine, and nanotechnology. 

Employing the “molecular engineering” approach to tailor size, shape, sequence, and functionality of organic/hybrid functional materials and explore their applications.