| 个人简介 | |
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 Prof. Shengjun Zhou Wuhan University, China |
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| 标题： Boosting efficiency of III-nitride light-emitting diodes | |
| 摘要： Gallium nitride (GaN)-based light-emitting diodes (LEDs) have attracted considerable interest for applications in high-resolution full color displays, automotive front lighting, visible light communication and general lighting. However, the light extraction efficiency of GaN-based LEDs is limited due to total internal reflection (TIR) of the emitted light at the GaN-air interface. In addition, the internal quantum efficiency of GaN-based LEDs is limited by high threading dislocation density in GaN film due to the lattice mismatch and difference in thermal expansion coefficients between the GaN and the substrate. This presentation will outline the recent advances in improving crystalline quality and light extraction efficiency of III-nitride blue/green/ultraviolet LEDs using micro/nano manufacturing technology. Recent work in our research group in fabricating micro/nano-structures, such as surface roughening, V-shaped pits, patterned current blocking layer, patterned substrate with silica array, sidewalls nano-prism, metal reflector, and distributed Bragg reflector (DBR) will be discussed in this talk. Moreover, mini/micro-LEDs for high-definition displays will be introduced. | |
| 简介： Shengjun Zhou received the Ph.D. degree from Shanghai Jiao Tong University, Shanghai, China, in 2011. He is now a Professor at Wuhan University. His current research interests lie in the areas of GaN-based blue/green/ultraviolet LEDs, nitride semiconductors, nanoimprint lithography and direct laser writing with applications in electronic and photonic devices. He is well known as an industrial technologist. Prior to joining Wuhan University, he was a CTO at Quantum Wafer Inc. from 2011 to 2014, focusing on the development of high-brightness GaN-based high-power LEDs. He was a research fellow at University of Michigan, Ann Arbor, from 2014 to 2015. He received many academic awards including the National Youth Talent Support Program, IOP Publishing CHINA TOP CITED PAPER AWARD, distinguished Young Scholar of Hubei province, Chutian Scholar of Hubei province, and Luojia Young Scholar of Wuhan University. He has published more than 70 papers and holds over 20 patents. He is Co-chair of the Organizing Committee for IEEE ICEPT 2016 conference. He served as committee member for many conferences. | |
