材料科学
光电子学
磷光
有机发光二极管
量子效率
兴奋剂
光致发光
深蓝色
掺杂剂
光化学
显色指数
激子
电致发光
聚芴
发光二极管
二极管
作者
Baohua Zhang,Lihui Liu,Guiping Tan,Bing Yao,Cheuk Lam Ho,Shumeng Wang,Junqiao Ding,Zhiyuan Xie,Wai Yeung Wong,Lixiang Wang
摘要
Highly efficient deep-blue and white PhOLEDs with FIr6 as a blue emitter and PVK as a host are developed by using a high triplet level interfacial layer to confine triplet excitons within the emissive layer. Incorporation of an interfacial layer with a higher triplet level such as TPCz can effectively cut off the potential loss pathways of the triplet excitons within the PVK:FIr6 emissive layer. The resultant PVK:FIr6-based deep-blue and white solution-processed PhOLEDs exhibit an unprecedented forward-viewing EQE of 16.1% and a total EQE of 28.0% (38.4 lm W−1) at a practical luminance of 1000 cd m−2, respectively.
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