Princeton University

School of Engineering & Applied Science

Control of exciton processes in OLEDs: recent development of TADF, Singlet-fission and lasers

Chihaya Adachi
E-Quad B205
Tuesday, August 14, 2018 - 10:30am

Abstract: Through almost 30 years’ research and development, organic light emitting diodes (OLEDs) finally realized the ultimate electroluminescence efficiency, i.e., nearly 100% electron to photon conversion. The strong demands for ideal OLED emitters pushed the development of novel light emitting molecules from fluorescence into room temperature-phosphorescence and thermally activated delayed fluorescence (TADF). In particular, the recent sophisticated molecular design allowed the creation of a wide variety of aromatic compounds for high performance TADF emitters. In my talk, recent attempts of novel organic light emitting materials aimed for high performance TADF, singlet-fission, and lasers will be mentioned.
Bio: Prof. Chihaya Adachi obtained his doctorate in Materials Science and Technology in 1991 from Kyushu University. He held positions as a research chemist and physicist in the Chemical Products R&D Center at Ricoh Co., a research associate in the Department of Functional Polymer Science at Shinshu University, a research staff in the Department of Electrical Engineering at Princeton University, and an associate professor and professor at Chitose Institute of Science and Technology. He became a distinguished professor at Kyushu University in 2010, and his current posts also include the director of Kyushu University’s Center for Organic Photonics and Electronics Research (OPERA) since 2010.