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- W2034404549 abstract "A series of simplified trilayer phosphorescent organic light-emitting diodes (PHOLEDs) with high efficiency and little efficiency roll-off based on a bipolar iridium emitter Iridium(III) bis(2-phenylpyridinato)-N,N′-diisopropyl-diisopropyl-guanidinate (ppy)2Ir(dipig) has been demonstrated. They are dominated by the efficient direct-exciton-formation mechanism and show gratifying concentration-insensitive and low-driving-voltage features. In particular, very high and stable electroluminescence (EL) efficiencies (maximum power efficiency and external quantum efficiency >98 lm W−1 and 25% respectively, and external quantum efficiency >20% over a wide luminance range of 1–15,000 cd m−2) are achieved in the PHOLEDs based on emitting layers (EMLs) consisting of (ppy)2Ir(dipig) codeposited with common host CBP in an easily controlled doping concentration range (15–30 wt%). The EL performance of the PHOLEDs is comparable to the highest PHOLEDs reported in scientific literature." @default.
- W2034404549 created "2016-06-24" @default.
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- W2034404549 date "2013-06-01" @default.
- W2034404549 modified "2023-09-23" @default.
- W2034404549 title "Concentration-insensitive and low-driving-voltage OLEDs with high efficiency and little efficiency roll-off using a bipolar phosphorescent emitter" @default.
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- W2034404549 doi "https://doi.org/10.1016/j.orgel.2013.03.004" @default.
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