Highly efficient green PLED based on triphenlyaminesilole-carbazole-fluorene copolymers with TPBI as the hole blocking layer
作者: Zhitian LiuLinhua ZhangXiang GaoLianjie ZhangQi ZhangJunwu Chen
作者单位: 1School of Materials Science & Engineering, Wuhan Institute of Technology, Wuhan 430073, China
2State Key Laboratory of Luminescent Materials & Devices, South China University of Technology, Guangzhou 510640, China
刊名: Dyes and Pigments, 2016, Vol.127 , pp.155-160
来源数据库: Elsevier Journal
DOI: 10.1016/j.dyepig.2015.12.028
关键词: Conjugated polymerSiloleAggression-induced emission (AIE)Polymeric light-emitting diodes (PLED)Green-emitting polymersTriphenlyaminesilole-carbazole-fluorene copolymers
英文摘要: Abstract(#br)Triphenylamine-containing silole was copolymerized with fluorene and carbazole by Suzuki coupling reactions to obtain a series of copolymers. The chemical structures, electrochemical properties, and optoelectronic properties including absorption, photoluminescence, and electroluminescence of these copolymers were well characterized. The highest absolute photoluminescence quantum efficiency of these polymers in films was up to 81%. 1,3,5-Tri( N -phenylbenzimidizol-2-yl)benzene hole blocking layer greatly boosts the external quantum efficiency up to 4.3% from 0.06%. The external quantum efficiency was further raised to 5.4% by blending copolymer with 2-(4-biphenylyl)-5-phenyl-1,3,4-oxadiazole (PBD), and the largest luminous efficiency as high as 13.6 cd/A was realized at the...
全文获取路径: Elsevier  (合作)
影响因子:3.532 (2012)