Molecular hosts for triplet emitters in organic light-emitting diodes and the corresponding working principle  

作　　者：MI BaoXiu1,2,GAO ZhiQiang1,LIAO ZhangJin2,HUANG Wei2 & CHEN Chin Hsin3 1Jiangsu Engineering Center for Flat-Panel Displays & Solid-State Lighting School of Materials Science & Engineering,Nanjing University of Posts & Telecommunications,Nanjing 210046,China 2Key Laboratory for Organic Electronics & Information Displays (KLOEID),Institute of Advanced Materials (IAM),Nanjing University of Posts & Telecommunications,Nanjing 210046,China 3Display Institute,Microelectronics and Information Systems Research Center,National Chiao Tung University Hsinchu,Hsinchu,300 China 

出　　处：《Science China Chemistry》2010年第8期1679-1694,共16页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China (20974046);funding from the Nanjing University of Posts and Telecommunications (207162);Natural Science Foundation of Jiangsu High Education (08KJB430011);New Century Excellent Talents funding from Ministry of Education in China (NCET-08-0697);National Basic Research Program of China (973 Program) (2009CB930600)

摘　　要：This paper summarizes the mechanism and routes for excitation of triplet emitters in dopant emission based phosphorescent organic light-emitting diodes (PhOLEDs),providing a comprehensive overview of recent progress in molecular hosts for triplet emitters in PhOLEDs.Particularly,based on the nature of different hosts,e.g.,hole transporting,electron transporting or bipolar materials,in which the dopant emitters can be hosted to generate phosphorescence,the respective device performances are summarized and compared.Highlights are given to the relationships among the molecular structure,thermal stability,triplet energy,carrier mobility,molecular orbital energy level and their corresponding device performances.This paper summarizes the mechanism and routes for excitation of triplet emitters in dopant emission based phosphorescent organic light-emitting diodes (PhOLEDs),providing a comprehensive overview of recent progress in molecular hosts for triplet emitters in PhOLEDs.Particularly,based on the nature of different hosts,e.g.,hole transporting,electron transporting or bipolar materials,in which the dopant emitters can be hosted to generate phosphorescence,the respective device performances are summarized and compared.Highlights are given to the relationships among the molecular structure,thermal stability,triplet energy,carrier mobility,molecular orbital energy level and their corresponding device performances.

关 键 词：PHOSPHORESCENT organic LIGHT-EMITTING diodes (OLEDs) working principle ELECTROPHOSPHORESCENCE HOSTS TRIPLET emitter 

分 类 号：TN312.8[电子电信—物理电子学]