Thermally activated delayed fluorescence (TADF) organic materials achieved either by subtle manipulations of intramolecular or intermolecular charge transfer and their applications for giving OLEDs with high external quantum efficiency (EQE) will be presented. 1. “Sky-Blue Organic Light Emitting Diode with 37% External Quantum Efficiency Using Thermally Activated Delayed Fluorescence from Spiroacridine-Triazine Hybrid” Adv. Mater. 28, 6976-6983 (2016). 2. “Efficient and Tunable Thermally Activated Delayed Fluorescence Emitters Having Orientation-Adjustable CN-Substituted Pyridine and Pyrimidine Acceptor Units” Adv. Funct. Mater. 26 , 7560-7571 (2016). 3. “ Probe exciplex structure of highly efficient thermally activated delayed fluorescence organic light emitting diodes” Nat. Commun. 9, 1-8 (2018)

报告人简介：B. S. Catholic Fu-Jen University (1989), Ph.D. National Taiwan University (1993), Postdoctoral researcher, University of Illinois at Urbana-Champaign (1995-1996), Université Louis Pasteur, Strasbourg (1996-1998). Joined the Department of Chemistry at National Taiwan University as an assistant professor in 1998, associate professor (2002) and professor (2006). Currently, Adjunct Faculty, Institute of Atomic and Molecular Science, Academia Sinica, Taiwan. Ken’s research mainly focuses on the molecular design and organic synthesis of novel i-conjugated materials for optoelectronic applications such as OLED, organic photovoltaic devices, and organic materials for nano-structures. Ken has published more than 290 SCI papers in these fields with an h-index of 64 (Scopus)