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- W3039579820 abstract "Modern lighting requires high efficiency and long lifetime simultaneously. In this paper, highly efficient white organic light emitting diodes (WOLEDs) are demonstrated based on a modified hybrid tandem structure constructed with a phosphorescent yellow-red unit using an exciplex host and a blue-red unit based on a thermally activated delayed fluorescence (TADF) blue emitter, and the devices are properly built with internal and external light extraction structures. The resulting four-color WOLED exhibits an external quantum efficiency and luminous efficacy of 126.2% and 150.7 Lm W−1, respectively, and the color rendering index is close to 80 at a brightness of 1000 cd m−2. This device also shows a very good color stability with increasing luminance up to 15 000 cd m−2 and there is only a small angular color variation for viewing angles changing from 0° to 70°. The T50 lifetime (defined as the time corresponding to 50% decrease in luminance from an initial value) of the WOLED at an initial luminance of 1000 cd m−2 is extrapolated as 12 600 h." @default.
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- W3039579820 date "2020-06-29" @default.
- W3039579820 modified "2023-10-01" @default.
- W3039579820 title "Hybrid Tandem White OLED with Long Lifetime and 150 Lm W <sup>−1</sup> in Luminous Efficacy Based on TADF Blue Emitter Stabilized with Phosphorescent Red Emitter" @default.
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- W3039579820 doi "https://doi.org/10.1002/adom.202000727" @default.
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