基于顶发射有机发光二极管的二阶微腔长度性能研究  

Second-order Microcavity Length Based on Top-emitting Organic Light-emitting Diodes

作　　者：王振[1] 梁真山 肖飞 陈家雯 卢永生 彭悦 张文霞 王玉婵[1] WANG Zhen;LIANG Zhenshan;XIAO Fei;CHEN Jiawen;LU Yongsheng;PENG Yue;ZHANG Wenxia;WANG Yuchan(College of Optoelectronic Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Chongqing Nanan Teacher's Training Academy,Chongqing 400060,China)

机构地区：[1]重庆邮电大学光电工程学院,重庆400065 [2]重庆市南岸区教师进修学院,重庆400060

出　　处：《光子学报》2021年第4期120-127,共8页Acta Photonica Sinica

基　　金：国家自然科学基金(No.61804020);重庆市基础研究与前沿探索项目(Nos.cstc2018jcyjAX0462,cstc2018jcyjAX0547,cstc2018jcyjAX0560);重庆市教委科学技术研究项目(Nos.KJQN201900643,KJQN201900630)。

摘　　要：在玻璃衬底生长金属铝作为不透明阳极,制备了结构为Al(100 nm)/TAPC(x nm)/TCTA(10 nm)/TCTA:Ir(ppy)3(10%,25 nm)/TPBi(30 nm)/LiF(2 nm)/Al(1 nm)/Ag(20 nm)/Alq3(y nm)作为顶发射的有机发光器件,其中x为30、130、160、170和180,y为20、40、60和80,研究了器件的二阶腔长及出光耦合性能。实验表明,通过改变空穴传输层的厚度,使器件微腔长度处于第二阶微腔效应增强区,可以提高器件的光电性能。同时当光输出耦合层厚度发生改变时,半透明阴极的光线穿透率与反射率发生改变,从而有效改善器件的光电性能。当微腔长度为230 nm、光输出耦合厚度为80 nm时,器件具有最佳的光电性能,并且光谱的角度稳定性强。器件最大亮度、电流效率和功率效率分别达到25 960 cd/m2、19.1 cd/A和16.01 lm/W。A Top-Emitting Organic Light-Emitting Diodes(TEOLEDs)with the configurations of Al(100 nm)/TAPC(x nm)/TCTA(10 nm)/TCTA:Ir(ppy)3(10%,25 nm)/TPBi(30 nm)/LiF(2 nm)/Al(1 nm)/Ag(20 nm)/Alq3(y nm)(x=30,130,160,170 and 180)(y=20,40,60 and 80)was fabricated.The experiments illustrate that photoelectric performance of the device can be improved by changing the thickness of the hole transport layer,which make the length of the device microcavity was in the enhancement zone of second-order microcavity effect.Moreover,by changing the light output coupling layer of the device,the transmittance and reflectance of the cathode of the device were changed,which can effectively improve the photoelectric performance of the device.A green TEOLEDs with the best photoelectric performance is achieved when the length of microcavity is 230 nm and the thickness of optical output coupling is 80 nm.The peak luminance,peak current efficiency and peak power efficiency of the TEOLEDs reach 25960 cd/m2,19.1 cd/A and 16.01 lm/W,respectively.

关 键 词：顶发射有机发光二极管 微腔效应 光耦合层 光电效率 角度稳定性 

分 类 号：TN383.1[电子电信—物理电子学]