Frontiers of Optoelectronics, 2015, 8 (4): 439, 网络出版: 2016-01-06  

High efficiency yellow fluorescent organic light emitting diodes based on m-MTDATA/BPhen exciplex

High efficiency yellow fluorescent organic light emitting diodes based on m-MTDATA/BPhen exciplex
作者单位
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences,University of the Chinese Academy of Sciences, Changchun 130022, China
摘要
High efficient yellow organic light emitting diodes (OLEDs) based on exciplex were reported. The exciplex was formed by 4, 4′, 4′′-tris [3-methylphenyl (phenyl) amino]-triphenylamine (m-MTDATA) and 4, 7- diphenyl-1, 10-phenanthroline (BPhen). The resulting yellow OLEDs exhibited an external quantum efficiency of over 7%, which is attributed to the effective energy back transfer from exciplex triplet state to exciplex singlet state. The maximum power efficiency of 25 lm/W was achieved. Doping a yellow phosphor Ir(bt)2(acac) into m-MTDATA: BPhen blend, a high efficiency device was achieved with a turn-on voltage of 2.1 V, maximum power efficiency and external quantum efficiency of 86.1 lm/W and 20.7%, respectively.
Abstract
High efficient yellow organic light emitting diodes (OLEDs) based on exciplex were reported. The exciplex was formed by 4, 4′, 4′′-tris [3-methylphenyl (phenyl) amino]-triphenylamine (m-MTDATA) and 4, 7- diphenyl-1, 10-phenanthroline (BPhen). The resulting yellow OLEDs exhibited an external quantum efficiency of over 7%, which is attributed to the effective energy back transfer from exciplex triplet state to exciplex singlet state. The maximum power efficiency of 25 lm/W was achieved. Doping a yellow phosphor Ir(bt)2(acac) into m-MTDATA: BPhen blend, a high efficiency device was achieved with a turn-on voltage of 2.1 V, maximum power efficiency and external quantum efficiency of 86.1 lm/W and 20.7%, respectively.

Liping ZHU, Kai XU, Yanping WANG, Jiangshan CHEN, Dongge MA. High efficiency yellow fluorescent organic light emitting diodes based on m-MTDATA/BPhen exciplex[J]. Frontiers of Optoelectronics, 2015, 8(4): 439. Liping ZHU, Kai XU, Yanping WANG, Jiangshan CHEN, Dongge MA. High efficiency yellow fluorescent organic light emitting diodes based on m-MTDATA/BPhen exciplex[J]. Frontiers of Optoelectronics, 2015, 8(4): 439.

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