Polymer light-emitting devices based on europium(Ⅲ) complex with 11-bromo-dipyrido[3,2-a:2′,3′-c]phenazine  

作　　者：Qunping Fan Yu Liu Zhaoran Hao Chun Li Yafei Wang Hua Tan Weiguo Zhu Yong Cao 

机构地区：[1]Key Laboratory of Environment-Friendly Chemistry and Application of the Ministry of Education [2]College of Chemistry,Xiangtan University [3]Institute of Polymer Optoelectronic Material and Devices,South China University of Technology

出　　处：《Science China Chemistry》2015年第7期1152-1158,共7页中国科学（化学英文版）

基　　金：supported by the Major Program for cultivation of the National Natural Science Foundation of China(91233112);the National Natural Science Foundation of China(51273168,21172187,21202139);the Ministry of Science and Technology of China(2010DFA52310);the Innovation Group and Xiangtan Joint Project of Hunan Natural Science Foundation(12JJ7002,12JJ8001);the key project of Hunan Provincial Education Department(13A102,12B123)

摘　　要：Polymer light-emitting diodes(PLEDs) containing Eu(DBM)3(Br DPPz)(DBM is dibenzoylmethane, and Br DPPz is 11- bromo-dipyrido[3,2-a:2′,3′-c]phenazine) doped in a blend of poly(9,9-dioctylfluorene)(PFO) and 2-tert-butylphenyl-5- biphenyl-1,3,4-oxadiazole(PBD) as the host matrix were reported. Eu(DBM)3(Br DPPz) exhibited high thermal stability and intense UV-Vis absorption. Narrow-bandwidth red emission at 612 nm with a full width at half-maximum(FWHM) of 14.0 nm was observed from Eu(DBM)3(Br DPPz) in these double-layered PLEDs at dopant concentrations from 1 wt% to 8 wt%. For the PLED containing 1 wt% Eu(DBM)3(Br DPPz), a maximum luminance of 829 cd/m2 at 153.5 m A/cm2, highest external quantum efficiency of 1.70% at 2.1 m A/cm2 and maximum luminance of 0.74 cd/A at 4.31 m A/cm2 were obtained.Polymer light-emitting diodes （PLEDs） containing Eu（DBM）3（BrDPPz） （DBM is dibenzoylmethane, and BrDPPz is11- bromo-dipyrido[3,2-a：2＇,3＇-c]phenazine） doped in a blend of poly（9,9-dioctylfluorene） （PFO） and 2-tert-butylphenyl-5- biphenyl-1,3,4-oxadiazole （PBD） as the host matrix were reported. Eu（DBM）3（BrDPPz） exhibited high thermal stability and intense UV-Vis absorption. Narrow-bandwidth red emission at 612 nm with a full width at half-maximum （FWHM） of 14.0 nm was observed from Eu（DBM）3（BrDPPz） in these double-layered PLEDs at dopant concentrations from 1 wt% to 8 wt%. For the PLED containing 1 wt% Eu（DBM）3（BrDPPz）, a maximum luminance of 829 cd/m2 at 153.5 mA/cm2, highest external quantum efficiency of 1,70% at 2.1 mA/cm2 and maximum luminance of 0.74 cd/A at 4.31 mA/cm2 were obtained.

关 键 词：europium（Ⅲ） complexes ELECTROLUMINESCENCE optophysical properties polymer light-emitting diodes 

分 类 号：O641.4[理学—物理化学] O631.24[理学—化学]