基于Alq3光耦合层的新型顶发射蓝光有机电致发光器件  

Blue Top-emission Organic Light-emitting Device Based on Alq Light-coupling Layer

作　　者：王振 陈家雯 卢永生 肖飞 梁真山 彭悦 张楠 WANG Zhen;CHEN Jiawen;LU Yongsheng;XIAO Fei;LIANG Zhenshan;PENG Yue;ZHANG Nan(Key Laboratory of Microelectronic Engineering,School of Optoelectronics Engineering,Chongqing University of Posts and Telecommunications,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》2020年第6期794-797,849,共5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(KJQN201900630)。

摘　　要：研制了一种结构为Ag/Glass/ITO/TAPC/mCP/mCP∶Firpic/TPBi/LiF/Al/Ag/Alq3的顶发射有机电致发光器件,通过在ITO玻璃衬底背面生长一层Ag反射膜,使器件发出的蓝光被反射膜反射到顶电极出射。利用顶电极表面的Alq3光耦合层有效地提升了金属复合阴极的透射率,降低了器件的微腔效应。实验结果表明,当光耦合层厚度为30nm时,获得了最大电流效率和最大亮度分别为8.91cd/A和5 758cd/m2的蓝光顶发射有机电致发光器件(TEOLED);同时,在10V电压下,其色坐标为(0.157,0.320),当亮度从1cd/m2变化到5 000cd/m2时,其色坐标仅漂移(0.002,0.010),表现出良好的色稳定性。In this article,a top-emitting organic light-emitting device with the structure of Ag/Glass/ITO/TAPC/mCP/mCP:Firpic/TPBi/LiF/Al/Ag/Alq3 was developed.By growing a layer of Ag reflector on the back of the ITO glass substrate,the blue light emitted by the device was reflected by the reflective film to the top electrode to emit.The Alq3 light coupling layer on the top electrode effectively improves the transmittance rate of the metal cathode and reduces the microcavity effect of the device.The experimental results show that when the thickness of the optical coupling layer is 30 nm,blue TEOLEDs with a maximum current efficiency of 8.91 cd/A and a maximum brightness of 5 758 cd/m2 were obtained.Meanwhile,under a voltage of 10 V,the CIE coordinates are(0.157,0.320),which only drift(0.002,0.010)when the brightness changes in the range of 1~5 000 cd/m2,showing good color stability.

关 键 词：顶发射有机电致发光器件 蓝光 微腔效应 光耦合层 色稳定性 

分 类 号：TN383.1[电子电信—物理电子学]