Deep Blue Exciplex Organic Light-Emitting Diodes with Enhanced Efficiency; P-type or E-type Triplet Conversion to Singlet Excitons?
Deep Blue Exciplex Organic Light-Emitting Diodes with Enhanced Efficiency; P-type or E-type Triplet Conversion to Singlet Excitons?
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DOI：
10.1002/adma.201203615
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发表时间：
2013-03-13
影响因子：
29.4
通讯作者：
Monkman, Andrew P.
中科院分区：
文献类型：
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作者：
Jankus, Vygintas;Chiang, Chien-Jung;Monkman, Andrew P.
自从有机发光二极管（OLED）[1]的发现以来，人们一直认为电荷复合形成激子的过程是由随机自旋统计控制的，并且单重态和三重态激子以1：3的比例形成。[2-4]这从根本上限制了OLED器件的外部量子效率，因为形成的激子的75%是弱发射的三重态。[5]器件的外量子效率（EQE）取决于四个因素：
Since the discovery of organic light emitting diodes (OLEDs)[1] it has been assumed that the process of charge recombination to form excitons is controlled by random spin statistics and that singlet and triplet excitons are formed in the ratio 1: 3.[2–4] This fundamentally limits external quantum efficiency of OLED devices, as 75% of excitons formed are triplet states which are weakly emissive.[5] The external quantum efficiency of devices (EQE) depends on four factors: