Yuji Zhao

Assistant Professor
ASU Directory Profile

ERC 531
(480) 727-4450

Research expertise: Electronics and photonics; MOCVD growth and device applications of GaN wide bandgap semiconductors, including LEDs, lasers, solar cells, and power transistors; nanofabrication and nanoscale characterizations; new physics, materials, devices for future solid-state electronics

Yuji Zhao received a bachelor’s degree in Microelectronics from Fudan University, China, in 2008, and a Ph.D in Electrical and Computer Engineering from University of California, Santa Barbara (UCSB) in 2012. Prior to joining ASU in 2014, he was an assistant project scientist in the Materials Department and Solid State Lighting and Energy Center (SSLEC) at UCSB. Zhao has worked extensively on GaN materials and devices, with more than 50 conference and journal publications, one book chapter, and over 10 patents, and has won Outstanding Research Award from UCSB for a record four consecutive times (2010 to 2013). His work on GaN LEDs and lasers was recognized with a Most Cited Article of the Year Award from Applied Physics Express, an Editor’s Pick of the Year Award from Applied Physics Letters, a Best Paper Award from CLEO, and was featured in over 100 international news outlets in five languages, including Science, Nature Photonics, Optical Society of America (OSA), Compound Semiconductors, and Yahoo. Since joining ASU in August 2014, he has received 2015 Bisgrove Scholar Faculty Award and 2015 NASA Early Career Faculty Award.

Professional Preparation
Ph.D., electrical and computer engineering, University of California, Santa Barbara, 2012
B.S., microelectronics, Fudan University, China, 2008

Recognition and awards
Applied Physics Letters Editor’s Picks of the Year, 2012
Applied Physics Express Most Cited Articles of the Year, 2012
Semi-Finalist, CLEO Thedore Mainman Paper Competition, 2012
UCSB SSLEC Outstanding Research Achievement Award, 2010-2013
Fudan Scholarship for Excellency in Undergraduate Study, 2004

Selected publications:

Xue, Y. Zhao, S. H. Oh, J. S. Speck, S. P. DenBaars, S. Nakamura, and R. J. Ram, “Thermally Enhanced Blue Light-Emitting Diodes”, Appl. Phys. Lett., in press (2015).

C. Pan, Q. Yan, H. Fu, Y. Zhao, Y. R. Wu, C. G. Van de Walle, S. Nakamura, and S. P. DenBaars, “High optical power and low efficiency droop blue light-emitting diodes using compositionally step-graded InGaN barrier“, Electron. Lett., vol. 51, pp. 1187 – 1189 (2015).

Gelzinyte, S Marcinkevicius, Y. Zhao, D. L. Becerra, S. Nakamura, S. P. DenBaars, and J. S. Speck, “High spatial uniformity of photoluminescence spectra in semipolar (20-21) plane InGaN/GaN quantum wells“, J. Appl. Phys., vol. 117, 023111 (2015).

L. Becerra, Y. Zhao, S. H. Oh, C. D. Pynn, K. Fujito, S. P. DenBaars, and S. Nakamura, “High-power low-droop violet semipolar (30-3-1) InGaN/GaN light-emitting diodes with thick active layer design“, Appl. Phys. Lett., vol. 105, 171106 (2014).

Zhao, R. M. Farrell, Y. R. Wu, and J. S. Speck, “Optical polarization ratio and valance band separation for nonpolar and semipolar InGaN quantum well light-emitting devices”, Jpn. J. Appl. Phys. Selected Topics in Applied Physics, vol. 53, 100206 (2014). Invited Review.