Efficient Green Organic Light-Emitting Devices Based on a Solution-Processable Starburst Molecule  

作　　者：ZHANG Xin-Wen WANG Jian-Yun ZHAO Ling-Ling GUO Xin LAI Wen-Yong HUANG Wei 张新稳;王建云;赵玲玲;郭鑫;赖文勇;黄维(Key Laboratory for Organic Electronics&Information Displays,Institute of Advanced Materials,Nanjing University of Posts and Telecommunications,Nanjing 210023;Institute of Advanced Materials,Nanjing University of Technology,Nanjing 211816)

机构地区：[1]Key Laboratory for Organic Electronics&Information Displays,Institute of Advanced Materials,Nanjing University of Posts and Telecommunications,Nanjing 210023 [2]Institute of Advanced Materials,Nanjing University of Technology,Nanjing 211816

出　　处：《Chinese Physics Letters》2013年第9期181-184,共4页中国物理快报（英文版）

基　　金：Supported by the National Basic Research Program of China(2009CB930600,2012CB723402 and 2012CB933301);the National Natural Science Foundation of China(61204048,61136003,51173081);the Ministry of Education of China(IRT1148);the Natural Science Foundation of the Education Committee of Jiangsu Province(12KJB510013);the Scientific Research Foundation of Nanjing University of Posts&Telecommunications(NY211025);the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions.

摘　　要：We develop high efficiency solution-processed pure green organic light-emitting devices using a starburst molecule 7,7′,7″-(5,5,10,10,15,15-hexahexyl-10,15-dihydro-5H-diindeno[1,2-a:1′,2′-c]fluorene-2,7,12-triyl)tris(4-(4-(9H-carbazol-9-yl)phenyl)benzo[c][1,2,5]thiadiazole)(TRcz)doped 2-methyl-9,10-di(2-naphthyl)anthracene(MADN)as the emitting layers.The electroluminescence properties of the devices with different doping concentrations are investigated.With the increasing doping concentration from 0.5wt%to 5wt%,the maximum efficiency changes from 4.8cd/A to 8.4cd/A.Under the optimal concentration of 4wt%,the device shows pure green emission at 516nm with a chromaticity coordinate of(0.30,0.59)as well as a high brightness of 19900cd/m^(2)and a high efficiency of 10.1cd/A,which are better than 11490cd/m^(2)and 4.2cd/A obtained in the undoped device.

关 键 词：DOPING PURE COORDINATE 

分 类 号：O62[理学—有机化学]