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Prof. Yang Yang, UCLA


Dr. Yang Yang    Professor Yang Yang
Tel. (310) 825-4052
FAX (310) 206-7353

Professor;  Ph.D. in Physics, University of Massachusetts-Lowell, 1992. M.S. in Physics, University of Massachusetts-Lowell, 1988.  B.S. in Physics, National Cheng Kung University, Taiwan, 1981.

In 1992, he was a post-doc at Bryan Kohler’s group of UC-Riverside. In October 1992, he joined UNIAX Corporation (now Du Pont Display) as a device physicist. Yang joined this department as an Assistant Professor in January 1997 and was subsequently promoted to Associate Professor in 1998. He has been a full professor since 2002. He holds the Carol and Lawrence E. Tannas Jr. Endowed Chair in Engineering since 2011. He is a Fellow of SPIE and the Electromagnetics Academy. He is a materials physicist with expertise in the fields of organic electronics, organic/inorganic interface engineering, and related devices, such as photovoltaic cells, LEDs, and memory devices. He is a Thomson Reuter Highly Cited Researcher (2014, Materials Science & Chemistry) and has published more than 270 refereed papers with over 32,000 citations (H-index 87). He has given more than 160 Invited presentations on his research work and has received 20 issued US patents.

Research Interests

Dr. Yang’s research interest focuses on functional electronic devices (solar cells, thin film transistors, light emitting devices) which hold promise for cost effective applications. The research is a comprehensive system involving rational design of materials (organic semiconductors, hybrid perovskites, inorganic nanomaterials), the control of film morphology, crystal growth, fundamental understanding of electrical properties of the new materials and structures, understanding of nanoscale structure-property relationship, control and understanding of interface s in devices (organic/organic, organic metal etc.), new device architecture development etc.

Area of Thesis Guidance

Organic electronics, Organic & Hybrid perovskite photovoltaic devices, CIGS/CZTS thin film photovoltaic devices, Thin Film Transistors, graphene, and related topics

Recent Publications


§  Interface Engineering of Highly Efficient Perovskite Solar Cells, Science, 345, 542(2014)

§  Single-Crystal Linear Polymers Through Visible Light–Triggered Topochemical Quantitative Polymerization, Science, 343, 272 (2014)

§  An Efficient Triple-Junction Polymer Solar Cell Having a Power Conversion Efficiency Exceeding 11%, Advanced Materials, 26, 5670-5677(2014)

§  Controllable Self-Induced Passivation of Hybrid Lead Iodide Perovskites toward High Performance Solar Cells, Nano Letter, 14 (7), 4158-4163(2014)

§  Elucidating Double Aggregation Mechanisms in the Morphology Optimization of Diketopyrrolopyrrole-Based Narrow Bandgap Polymer Solar Cells, Advanced Materials, 26, 3142–3147 (2014)

§  Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process, Journal of American Chemical Society, 136 (2), 622–625 (2014)

§  Boost Up Mobility of Solution-Processed Metal Oxide Thin-Film Transistors via Confining Structure on Electron Pathways , Advanced Materials, 26, 4273-4278, (2014)

§  Rational Defect Passivation of Cu2ZnSn(S,Se)4 Photovoltaics with Solution-Processed Cu2ZnSnS4:Na Nanocrystals, Journal of American Chemical Society, 135, 15998–16001 (2013)

§  Polymer solar cells, Nature Photonics 6, 153–161 (2012)

§  A polymer tandem solar cell with 10.6% power conversion efficiency, Nature Communications, 4, 1446 (2013)

§  Tandem polymer solar cells featuring a spectrally matched low-bandgap polymer, Nature Photonics 6, 180–185 (2012)

Courses Taught

MSE 200

 Solid State Physics (Graduate I)

MSE 150

 Introduction to Polymers (Senior level)

MSE 121

 Semiconductors (Senior and first year graduate level)

MSE 199

 Functional Material (Special topic for graduate students)

MSE 199

 Optical property of materials (Special topic for graduate students)

MSE   88

 Freshman Seminar. (Freshman)

MSE 298

 Physics of Solar Cells (Special topic for graduate students)


Personal Homepage

Research Group/Lab: Organic Electronic Materials and Devices

Office Location

§  2121-C Engineering V, UCLA

Mailing Address

§  UCLA, HSSEAS School of Engineering & Applied Sciences
Department of Materials Science and Engineering
410 Westwood Plaza
Los Angeles, CA 90095-1595

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