Red Electrophosphorescence from Oxadiazoles-Functionalized Iridium Complexes in Polymer Light-Emitting Devices  

作　　者：吴忠联 罗翠萍 胡峥勇 蒋昌云 黄丰良 朱克明 朱美香 朱卫国 

机构地区：[1]College of Chemistry, Xiangtan University, Xiangtan 411105 [2]IPOMD, South China University of Technology, Guangzhou 510640

出　　处：《Chinese Physics Letters》2006年第11期3091-3093,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No 20272014, and the Science Foundation of the Ministry of Education of China under Grant No 204097, and the 0utstanding Youth Foundation of Hunan Province under Grant No 04JJ1002, and the Science Foundation of the Department of Education of Hunan Province under Grant No 03A049.

摘　　要：A type of oxadiazole-functionalized iridium complex is newly employed as red phosphor emitter in polymer lightemitting devices （PLEDs） using a blend of poly （9,9-dioctylfluorene）（PFO） and 2-tert-butylphenyl-5-biphenyl- 1,3,4-oxadiazole （PBD） as a host matrix. The devices show bright red electrophosphorescence with dominant peaks at about 593nm and shoulders at about 642nm. The highest luminance efficiency of 3.3 cd/A at 9.3 V and maximum luminance of 2912cd/m^2 at 14.0V are achieved in the devices. At current density of 100mA/cm^2, the devices still exhibit luminance efficiency of 2.2 cd/A and luminance of 2300 cd/m^2. This indicates that the oxadiazole-functionalized iridium complexes have improved optoelectronic properties in the devices at high current density.A type of oxadiazole-functionalized iridium complex is newly employed as red phosphor emitter in polymer lightemitting devices （PLEDs） using a blend of poly （9,9-dioctylfluorene）（PFO） and 2-tert-butylphenyl-5-biphenyl- 1,3,4-oxadiazole （PBD） as a host matrix. The devices show bright red electrophosphorescence with dominant peaks at about 593nm and shoulders at about 642nm. The highest luminance efficiency of 3.3 cd/A at 9.3 V and maximum luminance of 2912cd/m^2 at 14.0V are achieved in the devices. At current density of 100mA/cm^2, the devices still exhibit luminance efficiency of 2.2 cd/A and luminance of 2300 cd/m^2. This indicates that the oxadiazole-functionalized iridium complexes have improved optoelectronic properties in the devices at high current density.

分 类 号：TB34[一般工业技术—材料科学与工程] O43[机械工程—光学工程]