分子掺杂聚合物发光二极管中的高效三重态激子融合。
Efficient Triplet Exciton Fusion in Molecularly Doped Polymer Light-Emitting Diodes.
机构信息
Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK.
King Abudulaziz City for Science and Technology, Riyadh, 12371, Saudi Arabia.
出版信息
Adv Mater. 2017 Apr;29(13). doi: 10.1002/adma.201605987. Epub 2017 Feb 1.
Solution-processed polymer organic light-emitting diodes (OLEDs) doped with triplet-triplet annihilation (TTA)-upconversion molecules, including 9,10-diphenylanthracene, perylene, rubrene and TIPS-pentacene, are reported. The fraction of triplet-generated electroluminescence approaches the theoretical limit. Record-high efficiencies in solution-processed OLEDs based on these materials are achieved. Unprecedented solid-state TTA-upconversion quantum yield of 23% (TTA-upconversion reaction efficiency of 70%) at electrical excitation well below one-sun equivalent is observed.
报道了掺杂三重态-三重态湮灭（TTA）上转换分子的溶液处理聚合物有机发光二极管（OLED），包括 9,10-二苯基蒽、苝、并五苯和 TIPS-五苯。三重态产生的电致发光的分数接近理论极限。基于这些材料的溶液处理 OLED 实现了创纪录的高效率。在远低于 1 个太阳等效的电激发下，观察到前所未有的固态 TTA 上转换量子产率为 23%（TTA 上转换反应效率为 70%）。
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