[COE Seminar] 2021/10/05: "Pure Organic Emitters for Organic Light-Emitting Devices with Record-High Efficiency" - Prof. Tien-Lin Wu, CHEM/NTHU


College of Engineering Seminar

  Pure Organic Emitters for Organic Light-Emitting Devices with Record-High Efficiency

  Highly efficient organic emitters are in urgent demand for solid-state lighting and full-color displays, especially for organic light-emitting diodes (OLEDs). In this talk, we are going to introduce OLED structure and the design and synthesis of molecules with thermally activated delayed fluorescence (TADF). Most our materials, they exhibited excellent photoluminescence quantum yields of 79~100% with small ΔEST values, fast reverse intersystem crossing, and high horizontal dipole ratios (Θ// = 83~88%) in thin films leading to the enhancement of device light outcoupling. Consequently, a green OLED showed a high average external quantum efficiency (EQE). The highest device efficiency (nearly 40%) appears record-breaking among TADF-based OLEDs to date.

  Professor Tien-Lin Wu,
  Department of Chemistry, National Tsing Hua University

  Professor Tsai-Te Lu,
  Institute of Biomedical Engineering, National Tsing Hua University

  2021/10/05 (Tue) 13:20 - 15:20

  Microsoft Teams (LINK)