Harnessing Triplet Excited States by Fluorescent Dopant Utilizing Codoped Phosphorescent Dopant in Exciplex Host for Efficient Fluorescent Organic Light Emitting Diodes
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- 作者：Hyun-Gu Kim ; Kwon-Hyeon Kim ; Chang-Ki Moon and Jang-Joo Kim
- 刊名：Advanced Optical Materials
- 出版年：2017
- 出版时间：February 2, 2017
- 年：2017
- 卷：5
- 期：3
- 全文大小：1514K
- ISSN：2195-1071
文摘
The singlet fraction of excitons on a conventional fluorescent emitter is increased by reverse intersystem crossing of exciplexes and the sensitization effect of phosphorescent materials. Consequently, a red fluorescent organic light-emitting diode (OLED) with an external quantum efficiency (EQE) of 23.7% is realized and an EQE of nearly 30% may be expected if all singlet excitons in the fluorescent emitter decay radiatively.