Prof. Alex K-Y. JEN

PhD (Pennsylvania)

Chair Professor of Chemistry and Materials Science


Contact Information

Office: CYC-6216
Phone: +852 3442-8451
Web: Jen Research Group
ORCID ID: 0000-0002-9219-7749
Author ID:


Chair Professor, Department of Materials Science and Engineering
Chair Professor, Department of Chemistry


Professor Alex Jen, a renowned scientist and eminent leader, joined City University of Hong Kong as Provost in December 2016.

Professor Jen received his bachelor's degree from the National Tsing Hua University in Taiwan and PhD from the University of Pennsylvania in USA. He was the Boeing-Johnson Chair Professor and Chair of the Department of Materials Science & Engineering at the University of Washington, Seattle. He also served as Chief Scientist for the Clean Energy Institute endowed by the Washington State Governor.

Professor Jen is a distinguished researcher with a well-cited publication record. He has co-authored >830 publications, given over 500 invited presentations, has >43,000 citations and an H-index of 107, and is co-inventor for more than 50 patents and invention disclosures. His research interests are inter-disciplinary, specializing in organic/hybrid functional materials and devices for photonics, energy, sensors, and nanomedicine. He was named by Thomson Reuters as one of the “Highly Cited Researchers” in the past several years and as one of the "World's Most Influential Scientific Minds" in 2015 and 2016 in the area of materials science.

Being an internationally recognized scholar, Professor Jen has been elected as Fellow by several professional societies including AAAS, MRS, ACS, PMSE, OSA, SPIE, and as an Academician by the Washington State Academy of Sciences. He has also demonstrated capability on technology transfer and fund raising, and is the founder of the Institute of Advanced Materials for Energy (i-AME) of the University of Washington.

Research Interests/Areas

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.



BS, Department of Chemistry, National Tsing Hua University, Hsin-Chu, 1978
Ph.D., Department of Chemistry, University of Pennsylvania, Philadelphia, 1984

University of Washington, Seattle, WA, USA, 1999-2016
Boeing/Johnson Chair Professor of Materials Science & Engineering
Professor of Chemistry
Chief Scientist, Clean Energy Institute
Director, Institute of Advanced Materials for Energy

Professional Experience

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-Present
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
Project Leader-Principal Scientist, Advanced Materials Laboratory, EniChem America, 1988-1990
Research Scientist, Specialty Polymers Department, Allied-Signal Inc., 1984-1988


   Patents & Invention Records: >50
   Publications: >
   H-index: 107
   Citations: >43,000

Name by Times Higher Education (THE) as one of the “Top 10 Researchers in the World Working on Perovskite Solar Cells”.
Named to The World’s Most Influential Scientific Minds by Thomson Reuters, 2015, 2016
Honorary Professor, National Chiao Tung University, Taiwan, ROC, 2017
Distinguished Alumni Award, College of Science, National Tsing Hua University, Taiwan, ROC, 2017
BK21+ Distinguished Professor, Korea University, 2015-2018
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, Korea 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

Editor or Editorial Membership

Editor, IEEE Journal of Photovoltaics
Advisory Board Member, Energy Frontier Research Center, Univ. of Michigan
Advisory Board Member, Material Synthesis, Simulation Across Scales, Pacific Northwest National Laboratory
Editorial Advisory Board Member, ACS Chemistry of Materials, NPG-Asia Materials, Journal of the Experimental Nanoscience
Chair of the Advisory Board, The Transformative Materials Initiative, The Pacific Northwest National Laboratory, Richland, WA, 2007-
Board of Directors, The Washington Technology Center, appointed by the Washington State Governor
Advisory Board Member, College of Arts & Science, National Chiao-Tung University, Taiwan
Advisory Board Member, Institute of Chemistry, Academic Sinica, Taiwan

Selected Publications from >600 SCI Papers
(citations: >29,000, h-index: 89)

  • "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, Nature, 2013, 500, 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., 2013, 4, 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, Science, 2011, 331, 1312.
  • "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, Nature, 1997, 388, 845.
  • "Molecular Biomimetics: Nanotechnology through Biology", M. Sarikaya, C. Tamerler, A. K-Y. Jen, K. Schulten, and F. Baneyx, Nature Materials, 2003, 2, 577.
  • "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 Materials, 2006, 5(9), 703.
  • "Record Electro-optic Coefficient of 170 pm/V and Vp 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 Photonics, 2007, 1, 180.
  • "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 Angew. Chem. Int. Ed., 2016, 55, 1.
  • "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, J. 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, J. Am. Chem. Soc., 2016, 138, 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, J. Am. Chem. Soc., 2016, 138, 10112.
  • "Supramolecular Assembly of Complementary Cyanine Salt J-Aggregates”, Z. Li, S. Mukhopadhyay, S.-H. Jang, J.-L. Brédas, and A. K.-Y. Jen, J. Am. Chem. Soc., 2015, 137, 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, J. Am. Chem. Soc., 2015, 137(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,  J. Am. Chem. Soc., 2015, 137, 2167.
  • "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, Adv. Mater., 2016, 28(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, Adv. Mater., 2016, 28, 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, Adv. 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, Adv. Mater., 2016, 28, 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, Adv. Mater., 2015, 27, 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, Adv. Mater., 2015, 27(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, Adv. Mater., 2015, 7(21), 3310.
  • "High Performance Inverted Planar Perovskite Solar Cells with No Obvious Hysteresis Achieved  by Using Room-Temperature Processed NiOx Hole-Transporting Layer”, H. Zhang, J. Cheng, R. Lin, H. He, J. Mao, K. S. Wong, A. K.-Y. Jen, W. C. H. Choy, ACS Nano, 2016, 26(3), 321.
  • "Role of Chloride in the Morphological Evolution of Organo-Lead Halide Perovskite Thin-Films”, S. T. Williams, F. Zuo,  C.-C. Chueh, C.-Y. Liao, P.-W. Liang, A. K.-Y. Jen, ACS Nano, 2014, 8(10), 10640.
  • "Heterojunction Modification for Highly Efficient Organic-Inorganic Perovskite Solar Cells”, K. Wojciechowski, S. D. Stranks, A. Abate, G. Sadoughi, A. Sadhanala, N. Kopidakis, G. Rumbles, C.-Z. Li, R. H. Friend, A. K.-Y. Jen and H. J. Snaith, ACS Nano, 2014, 8(12), 12701.
  • "High Performance Perovskite-Polymer Hybrid Solar Cells via Electronic Coupling with Fullerene Monolayers”, A. Abrusci, S. D. Stranks, P. Docampo, H.-L. Yip, A. K.-Y. Jen and H. J. Snaith, Nano Lett., 2013, 13(7), 3124.
  • "Interconnecting Layer Design for Highly Efficient Series Connection Polymer Tandem Solar Cells”, L. Zuo, C.-Y. Chang, S. Zhang, H. Li, A. K.-Y. Jen, and H. Z. Chen, Energy & Environ. Sci., 2015, 8, 1712.
  • "Recent Progress and Perspective in Solution-Processed Interfacial Materials for Efficient and Stable Polymer and Organometal Perovskite Solar Cells”, C.-C. Chueh, C.-Z. Li, and A. K.-Y. Jen, Invited Review, Energy & Environ. Sci., 2015, 8, 1160.
  • "Non-Halogenated Solvents for Environmental Friendly Processing of High-performance Bulk-Heterojunction Polymer Solar Cells”, C.-C. Chueh, K. Yao, H.-L. Yip, C.-Y. Chang, Y. Xu, K.-S. Chen, C.-Z. Li, P. Liu, F. Huang, Y. W. Chen, W.-C. Chen, and A. K.-Y. Jen, Energy & Environ. Sci., 2013, 6, 3241.
  • "Recent Advances in Solution-Processed Interface Materials for Efficient and Stable Polymer Solar Cells", H.-L. Yip and A. K-Y. Jen, Energy Environ. Sci., 2012, 5(3), 5994.
  • "High-Performance Fully Printable Perovskite Solar Cells via Blade-Coating Technique in Ambient Condition”, Z. B. Yang, C-C. Chueh, F. Zuo, J. H. Kim, P-W. Liang, and A. K.-Y. Jen, Adv. Energy Mater., 2015, 5(13), 1500328.
  • "Dual Compositional Engineeing in MAxFA1-xPb(IyBr1-y)3 for High-Performance Perovskite Solar Cells”, Z. B. Yang, C.-C. Chueh, P.-W. Liang, M. Crump, F. Lin, and A. K.-Y. Jen, Nano Energy, 2016, 22, 328.