High efficiency color-tunable organic light-emitting diodes with ultra-thin emissive layers in blue phosphor doped exciplex
High efficiency color-tunable organic light-emitting diodes with ultra-thin emissive layers in blue phosphor doped exciplex
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DOI：
10.1063/1.5082011
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发表时间：
2019-01
影响因子：
4
通讯作者：
S. Ying;Yibing Wu;Qian Sun;Yanfeng Dai;Dezhi Yang;Xianfeng Qiao;Jiangshan Chen;Dongge Ma
中科院分区：
文献类型：
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作者：
S. Ying;Yibing Wu;Qian Sun;Yanfeng Dai;Dezhi Yang;Xianfeng Qiao;Jiangshan Chen;Dongge Ma
通过将未掺杂的超薄红色和绿色磷光发光体与蓝色磷光掺杂的激基复合物系统相结合，已经证明了高效率的颜色可调谐的有机发光二极管（CT-OLED）。所得到的器件提供具有从2143到7563 K的宽相关色温范围的日光式发射，并且分别实现了34.4 cd A−1、39.5 lm W−1和18.6%的最大电流效率、功率效率和外部量子效率，而没有任何外耦合增强。此外，CT-OLED表现出低效率滚降，即使在1000和5000 cd m-2下，外量子效率仍然分别保持18.5%和17.1%，其比现有技术的CT-OLED更有效。高效颜色可调有机发光二极管已经通过将未掺杂的超薄红色和绿色磷光发光体与蓝色磷光掺杂的激基复合物系统组合来证明了CT-0 LED（CT-0 LED）。所得到的器件提供具有从2143到7563 K的宽相关色温范围的日光式发射，并且分别实现了34.4 cd A−1、39.5 lm W−1和18.6%的最大电流效率、功率效率和外部量子效率，而没有任何外耦合增强。此外，CT-OLED表现出低效率衰减，即使在1000和5000 cd m-2下，外部量子效率仍然分别保持18.5%和17.1%，这比现有技术的CT-OLED更有效。
High efficiency color-tunable organic light-emitting diodes (CT-OLEDs) have been demonstrated by combining non-doped ultra-thin red and green phosphorescent emitters with a blue phosphorescence-doped exciplex system. The resultant devices deliver a sunlight-style emission with a wide correlated color-temperature span from 2143 to 7563 K and achieve the maximum current efficiency, the power efficiency, and the external quantum efficiency of 34.4 cd A−1, 39.5 lm W−1, and 18.6%, respectively, without any out-coupling enhancements. Furthermore, the CT-OLEDs exhibit low efficiency roll-off that the external quantum efficiencies still remain 18.5% and 17.1% even at 1000 and 5000 cd m−2, respectively, which are more efficient than those of state-of-the-art CT-OLEDs.High efficiency color-tunable organic light-emitting diodes (CT-OLEDs) have been demonstrated by combining non-doped ultra-thin red and green phosphorescent emitters with a blue phosphorescence-doped exciplex system. The resultant devices deliver a sunlight-style emission with a wide correlated color-temperature span from 2143 to 7563 K and achieve the maximum current efficiency, the power efficiency, and the external quantum efficiency of 34.4 cd A−1, 39.5 lm W−1, and 18.6%, respectively, without any out-coupling enhancements. Furthermore, the CT-OLEDs exhibit low efficiency roll-off that the external quantum efficiencies still remain 18.5% and 17.1% even at 1000 and 5000 cd m−2, respectively, which are more efficient than those of state-of-the-art CT-OLEDs.