Y. Yang

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.


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

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



§  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
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)



Research Group/Lab: Organic Electronic Materials
and Devices


§  2121-C
Engineering V, UCLA


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