以DCJTB为颜色转换层的三原色WOLED研究  

Three Primary-Colored WOLED Adopting DCJTB as Color Conversion Layer

作　　者：谢嘉凤 王振 陈爱 肖飞 陈家雯 卢永生 王玉婵 XIE Jiafeng;WANG Zhen;CHEN Ai;XIAO Fei;CHEN Jiawen;LU Yongsheng;WANG Yuchan(Key Lab.of Microelectronic Engin.,School of Optoelectronics Engin.,Chongqing University of Posts and Telecommun.,Chongqing 400065,CHN;Chongqing Nan’an Teacher’s Training Academy,Chongqing 400060,CHN)

机构地区：[1]重庆邮电大学光电工程学院微电子工程重点实验室,重庆400065 [2]重庆市南岸区教师进修学院,重庆400060

出　　处：《半导体光电》2019年第5期620-625,共6页Semiconductor Optoelectronics

基　　金：国家自然科学基金项目(61804020);重庆市基础研究与前沿探索项目(cstc2018jcyjAX0462,cstc2018jcyjAX0547);重庆市教委科学技术研究项目(KJ1704076)

摘　　要：对一系列蓝光和蓝绿光器件展开研究,发现结构为ITO/NPB(40nm)/mCP(5nm)/mCP∶FIrpic(30nm)/TPBi(2nm)/TPBi∶Ir(ppy)3(10nm)/TmPyPB(40nm)/LiF(1nm)/Al的蓝绿光器件具有最佳光电性能,其电流效率高达38.3cd/A。基于该结构,结合采用红色荧光染料DCJTB制备的颜色转换层实现了三原色白色有机发光二极管(White Organic Light-emitting Diode,WOLED)。结果表明,器件性能可通过DCJTB浓度进行调控,当其浓度为0.7%时,实现了电流效率为23.9cd/A、色坐标为(0.35,0.43)及色温为5121K的WOLED,且电流密度从1mA/cm^2变化到100mA/cm^2,其色坐标仅漂移(0.005,0.003)。Based on studying a series of blue and blue/green optical devices,it is found that the blue/green optical devices with the structure of ITO/NPB(40 nm)/mCP(5 nm)/mCP∶FIrpic(30 nm)/TPBi∶Ir(ppy)3(10 nm)/TmPyPB(40 nm)/LiF(1 nm)/Al own the best photoelectric performance,and their current efficiency is up to 38.3 cd/A.Then three primary-colored white organic light-emitting diode(WOLED)based on the optimal structure was realized by fabricating the color conversion layer(CCL)of DCJTB on the back of ITO glass substrate.It was illustrated that the device performances can be controlled by varying the concentration of DCJTB within CCL.When the concentration of DCJTB is 0.7%,a stable cold WOLED was realized with the maximum current efficiency of 23.9 cd/A,CIE coordinates of(0.35,0.43)and color temperature(CCT)of 5121 K,and the CIE coordinates only drift(0.005,0.003)when the current density changes from 1 to 100 mA/cm^2.

关 键 词：白色有机发光二极管 荧光量子效率 颜色转换层 发光层 电流效率 

分 类 号：TN383.1[电子电信—物理电子学]