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

2021-10-05

College of Engineering Seminar

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

● ABSTRACT
  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.

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

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

● TIME
  2021/10/05 (Tue) 13:20 - 15:20

● VENUE
  Microsoft Teams (LINK)

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