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- W2667012671 abstract "We fabricated highly efficient thermally activated delayed fluorescence (TADF)‐based tandem green‐ and white‐emitting organic light emitting devices (OLEDs). By using 4CzIPN as a green TADF emitter, mCP:TPBI as a co‐host, and BPhen:Li/HAT‐CN as a connecting unit, we demonstrated the first TADF‐based green‐emitting tandem OLED with a maximum current efficiency (CE) and external quantum efficiency (EQE) of 117.5 cd/A and 32.5%, respectively. This is by far the highest EQE achieved to date for TADF devices. We also explored the first hybrid tandem white‐emitting OLED using DMAC‐DPS and PO‐01 as blue TADF and orange phosphorescent emitters, respectively. The device exhibited a maximum CE and EQE of 78.5 cd/A and 28.5%, respectively, with CIE ( x , y ) of (0.33, 0.45) at a brightness of 1000 cd m −2 . From these data, we suggest that blue TADF materials have a great potential to replace the conventional fluorescent blue emitters for highly efficient white OLEDs composed of hybrid tandem structures." @default.
- W2667012671 created "2017-06-30" @default.
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- W2667012671 date "2017-06-26" @default.
- W2667012671 modified "2023-09-28" @default.
- W2667012671 title "Thermally activated delayed fluorescence-based tandem OLEDs with very high external quantum efficiency" @default.
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- W2667012671 doi "https://doi.org/10.1002/pssa.201700240" @default.
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