Progress of deep-UV LEDs by increasing light-extraction efficiency

Prof. Hideki Hirayama (RIKEN & Quantum Optodevice Lab., Japan)

Biography +

Hideki Hirayama received his PhD of Eng. from Tokyo Institute of Technology in 1994. In the same year, he became a research scientist at RIKEN. He became a Team Leader to manage the Terahertz Quantum Device Team in 2005. In 2012, he was appointed as a Chief Scientist of Quantum Optodevice Laboratory. He has also concurrent positions as visiting professor of Saitama University, Tokyo University of Science and Tokushima University. He won a Japan IBM Science Prize in Electronics in 2010, an Ichimura Science Prize in 2011, a Science and Technology Award from the Minister of Education, Culture, Science and Technology in 2014, a Compound Semiconductor Electronics Achievement Award (Prof. Isamu Akasaki Award) of The Japan Society of Applied Physics in 2019, etc. His research focuses on crystal growth of AlGaN/AlN nitride-semiconductors and development of deep-UV LEDs. He is also developing terahertz quantum cascade lasers (THz-QCLs).

Deep UV LED development and technology trends

President & CEO. Myeong Seok Oh (Photon Wave Co., Ltd., Korea)

Biography +


Ph.D., Materials Engineering, Stevens Institute of Technology (New Jersey, U.S.A) (1986.8-1990.6)
M.S., Materials Engineering, Stevens Institute of Technology (New Jersey, U.S.A) (1984.8-1986.5)
B.S., Metallurgical Engineering, Hanyang University (Seoul) (1979.3-1983.1)


Photon Wave Co., Ltd, President & CEO (2020.6-Present)
TES Co. Ltd., Senior Vice President (2014.5~ 2020.5)
LG Innotek, Head of LED R&D center, Vice President (2009.11~ 2014.3)
Seoul Optodevice (Seoul Viosys) Co. Ltd., President (2008.9~2009.8)
QSI Co. Ltd., President & CEO (2001.4~2008.8)
Samsung Electro-Mechanics, LD/LED Biz Division Leader, General Manager (1996.2~2001.4)
Samsung Advanced Institute of Technology, Principal Researcher (1990.9~1996.1)

Quantum and nanoscale engineering of Al(Ga,B)N for high efficiency UV-C and far
UV-C optoelectronics

Prof. Zetian Mi (Univ. of Michigan, USA)

Biography +

Zetian Mi is a Professor in the Department of Electrical Engineering and Computer Science at the University of Michigan, Ann Arbor. His teaching and research interests are in the areas of low dimensional semiconductors and their applications in photonic, electronic, clean energy, and quantum devices and systems. Prof. Mi has received the Science and Engineering Award from W. M. Keck Foundation in 2020, the David E. Liddle Research Excellence Award in 2021, the Young Scientist Award from the International Symposium on Compound Semiconductors in 2015, and the IEEE Photonics Society Distinguished Lecturer Award in 2020. Prof. Mi currently serves as the Editor of Progress in Quantum Electronics. He also served as the Serial Editor of Semiconductors and Semimetals. Prof. Mi is a fellow of SPIE and OSA.