8-羟基喹啉锂材料及器件特性的研究  

Study on Characteristics of 8-Hydroxyquinolinolatolithium and Its Devices

作　　者：李建丰[1,2] 赵燕平[2] 常文利[2] 欧谷平[1] 张福甲[1] 

机构地区：[1]兰州大学物理科学与技术学院,兰州730000 [2]兰州交通大学数理与软件工程学院,兰州730070

出　　处：《半导体光电》2009年第2期228-231,241,共5页Semiconductor Optoelectronics

基　　金：国家自然科学基金项目(60676033);甘肃省自然科学基金项目(3ZS041-A25-001);兰州交通大学“青蓝”人才工程项目(QL-08-18A)

摘　　要：阐述了蓝光材料Liq的合成及其提纯方法,并用Liq作为发光材料制备了蓝色有机发光器件,研究了CuPc对该器件特性的影响。结果表明,CuPc的加入降低了空穴载流子的注入势垒,有利于提高空穴注入能力,因而提高了器件的亮度和发光效率。在电压为16 V时,没有缓冲层的器件效率为0.363 cd/A,有缓冲层的器件效率为0.731 cd/A。A method of synthesizing and purifying the 8-hydroxyquinolinolatolithium（Liq） is discussed in detail. Blue organic light-emitting diodes based on the synthesized Liq was fabricated with spin and vacuum deposition. Meanwhile, the influence of CuPc buffer layer on the luminescence properties of blue OLEDs was studied. Results indicate that these OLEDs were fabricated with improved luminance, efficiency and life time by inserting a CuPc buffer layer. As the voltage is 16 V, the efficiency of the device with a buffer layer is 0. 731 cd/A while that of the devices without a buffer layer is 0. 363 cd/A.

关 键 词：8-羟基喹啉锂 有机电致发光 CuPc缓冲层 发光效率 

分 类 号：TN383.1[电子电信—物理电子学]