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
organic light-emitting diodes (OLEDs) organic light-emitting diodes (OLEDs) fluorescent fluorescent exciplex exciplex
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.