基于苝的非掺杂荧光白色有机电致发光器件  

Non-doped fluorescent white organic electroluminescent device based on perylene

作　　者：吴有智[1] 梁楠 赵玉康 张材荣[2] WU You-zhi;LIANG Nan;ZHAO Yu-kang;ZHANG Cai-rong(State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals, Lanzhou Univ. of Tech., Lanzhou 730050, China;School of Science, Lanzhou Univ. of Tech., Lanzhou 730050, China)

机构地区：[1]兰州理工大学省部共建有色金属先进加工与再利用国家重点实验室,甘肃兰州730050 [2]兰州理工大学理学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2021年第6期15-20,共6页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(11964016)。

摘　　要：采用两种经典传统荧光材料作为发光层,制备了非掺杂白色有机电致发光器件(WOLEDs).在器件中两层苝(perylene)以薄层的方式分别置于双极性主体材料CBP(4,4’-di(N-carbazole)biphyenyl)两侧作为蓝光发射体,一层超薄的红荧烯(rubrene)插入CBP中作为橙光发射体.通过改变rubrene在CBP中的插入位置获得了高效率白色荧光器件,最高电流效率为6.6 cd/A(外量子效率为2.6%),最高亮度为18480 cd/m^(2),且其中一种器件在200 mA/cm^(2)的高电流密度下,CIE(commission internationale de l’eclairage)色坐标可达理想白光平衡点(0.33,0.33).By using two typical traditional fluorescent materials as the light-emitting layer,an non-doped all fluorescent white organic light-emitting diode(WOLED)is fabricated.In the device,two thin layers of perylene are located at both sides of ambipolar host material CBP(4,4’-N,N′-dicarbazole-biphyenyl)as blue emitters,an ultra-thin rubrene layer inserted into CBP as orange emitter.A simple and efficient OLED is obtained by varying the insertion position of rubrene in CBP,the highest current efficiency is 6.6 cd/A(external quantum efficiency is 2.6%),the maximum brightness is 18480 cd/m^(2),and Commission Internationale de l’Eclairage(CIE)co-ordinates can reach the ideal white light equilibrium point(0.33,0.33)at a current density of 200 mA/cm^(2).

关 键 词：荧光 白色 有机电致发光器件 苝 红荧烯 

分 类 号：TN383.1[电子电信—物理电子学]