Prof. Chihaya Adachi Kyushu University
Co-founder and Scientific Advisor of Kyulux

Professor Chihaya Adachi is the director of Kyushu University’s Advanced Organic Photonics and Electronics Research Center (OPERA) and a world-class chemist specializing in organic photoelectronic, organic photonic and electronic properties, and functional molecular design.

In 1991, he received a doctorate in engineering and materials engineering from Kyushu University, and then began his career as a researcher and physicist at Ricoh Chemical Research Institute, Ltd., and served as an assistant in the Department of Functional Polymers, Faculty of Textile Science and Technology, Shinshu University. After serving as a researcher at Princeton University’s Center for Photonics and Optoelectronic Materials (POEM), he also worked as a professor at Chitose University of Science and Technology. From 2010 he became a professor at Kyushu University’s Graduate School of Engineering and director of the Advanced Organic Photonics and Electronics Research Center (OPERA), where he has been engaged in OLED research.

In 2009, Professor Adachi succeeded in developing the third-generation of OLED technology called “Thermal Activated Delayed Fluorescence” (TADF), which can achieve 100% internal quantum efficiency without using rare metals, making this a groundbreaking development. Adachi’s original TADF technology research has been published in Nature Magazine in 2012, and subsequently, in 2013, the same laboratory succeeded in developing Hyperfluorescence™ light-emitting technology that overcomes the weaknesses of TADF.

Professor Adachi has received numerous awards both domestically and internationally for his groundbreaking research and inventions.


In addition, he was selected as a Highly Cited Researcher for five consecutive years since 2018, and in 2023, he made a significant contribution to the invention of TADF, deepening the principles of materials chemistry, photochemistry, and condensed matter physics, and promoting the display industry in the real world. He was highly praised for his work, received the prestigious Medal with Purple Ribbon, and continued to play an active role as a leading expert in OLED research.

After the successful development of TADF, Prof. Adachi worked closely with Kyushu University and Fukuoka City and Fukuoka Prefecture to build a world-class R&D cluster in order to achieve this goal.

After that, Prof. Adachi established Kyulux, Inc., with former CFO Akira Minakuchi and CSO Junji Adachi, and continues to provide support as scientific advisor toward practical use of all colors for TADF and Hyperfluorescence™.