空穴缓冲层的厚度对有机电致发光器件性能的影响  

Effect of a Hole Buffer Layer Thickness on the Performance of Organic Light-Emmitting Devices

作　　者：王洪梅[1] 姜文龙[1] 王静[1] 韩强[1] 丁桂英[1] 王立忠[1] 赵晓红[1] 

机构地区：[1]吉林师范大学信息技术学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2007年第2期16-18,共3页Journal of Jilin Normal University:Natural Science Edition

基　　金：吉林省科技发展计划项目(编号:20050523);吉林省教育厅科研计划项目(吉教科合字[2003]第25号;吉教科合字[2004]第54号);四平科技局计划项目(四科合字第2005007号;四科合字第2006008号

摘　　要：本文利用有机发光材料4,4′,4″-{N,-(2-naphthyl)-N-phenylamino}-triphenylamine(2T-NATA)作为空穴缓冲层,制备了结构为:ITO/2T-NATA/NPB/DPVBi/Alq3/LiF/Al的有机电致发光器件.在器件的制备过程中通过改变空穴缓冲层2T-NATA的厚度使器件的亮度和效率得到了改善.当2T-NATA的厚度为15 nm时,器件的性能最好.在电流密度为623mA/cm2时最大亮度达到16530cd/m2,对应的电流效率为2.65cd/A,器件的色坐标为(0.23,0.36),属于蓝绿光发射.We have fabricated organic light- emitting devices with the structure of ITO/2 T- NATA/NPB/DPVBi/AIq3/ LiF/AI by using the organic materials 2 T- NATA as the hole buffer layers. Both the luminance and efficiency of organic light - emitting devices have been improved by changing the buffer layers thickness. When the thickness of 2 T - NATA is 15 nm, the performance of devices is the best. The device shows the maximum luminance of 16530cd/m^2 and the corresponding luminous efficiency of 2.65 cd/A at the current density of 623 mA/cm^2. The CIE chromaticity coordinates of （0.23, 0.36） belongs to blue-green light emission.

关 键 词：空穴缓冲层 有机电致蓝光器件 性能 

分 类 号：O463[机械工程—光学工程]