期刊
MATERIALS CHEMISTRY FRONTIERS
卷 2, 期 5, 页码 1017-1023出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8qm00064f
关键词
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资金
- Fundamental Research Funds for the Central Universities
- NSFC [51473185, 21672267, 61605253, 51733010]
- Science and Technology Planning Project of Guangdong [2015B090915003, 2015B090913003]
Thermally activated delayed fluorescence (TADF) emitters have aroused serious attention for their use in organic light-emitting diodes (OLEDs). However, TADF emitters providing both doped and non-doped OLEDs with high device performance are rare. In this work, we present a yellow TADF emitter (OPDPO) meeting the above requirements. The OPDPO-based doped OLEDs show a maximum external quantum efficiency (EQE) of 26.7%, which is amongst the highest ever reported for doped yellow TADF-based OLEDs. The EQE remains as high as 22.1% at a luminance of 1000 cd m(-2). Meanwhile, the OPDPO-based non-doped OLEDs afford a maximum EQE of 16.6% at a high luminance of 3600 cd m(-2), which is amongst the best performances of non-doped yellow TADF-based OLEDs. Moreover, simple and efficient white OLEDs are implemented by combining a blue conventional fluorescent emitter with either a doped or non-doped OPDPO emissive layer, confirming the universal applications of OPDPO in high-performance OLEDs.
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