顶发射有机发光器件的研制  

Study and Fabrication of Top-Emitting Organic Light-Emitting Devices

作　　者：郭荣新[1] 陈燕[1] 王加贤[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建泉州362021

出　　处：《半导体技术》2013年第3期189-193,共5页Semiconductor Technology

基　　金：福建省自然基金项目(2012J01277);泉州市重大科技专项(2011ZD01GO1)

摘　　要：由于具有较高的器件效率、开口率及分辨率,顶发射有机发光器件受到了越来越多的重视。不同于底发射器件,顶发射器件存在较为明显的微腔效应。由于微腔的作用,顶发射有机发光器件存在着发光峰随观察角度增大而蓝移的现象。针对该现象,基于微腔理论,采用光学模拟的方法得到了光谱变化微弱的顶发射器件结构,制备相应器件对理论模拟结果进行了验证。测量结果表明,器件响应波长随观察角度变化而蓝移的现象几乎可以忽略,从0°～75°,发光峰只蓝移了8 nm。由于微腔效应的效率增益效果,器件具有较高的效率。在12 V下,最大效率达到11.5 cd/A,远高于相同结构底发射器件的效率。Top-emitting organic light-emitting devices （TEOLEDs） have been paid more and more attention to because of the advantages of high efficiency, high-aperture-ratio and high pixel resolution. Compared to the bottom-emitting organic light-emitting devices （BEOLEDs）, there is obvious microcavity effect in the top-emitting devices. Due to the microcavity effect, the emission peak of TEOLED shifts to the shorter wavelength. According to the microcavity theory, the structure of TEOLED with high efficiency and near angle-independence was designed through optical simulation, and the devices were fabricated to prove the simulation results. The test results show that the blue-shift of the resonant wavelength （RW） with increasing view angles is nearly negligible. When the viewing angles moved from 0 °to 75°, the blue-shift of the resonant wavelength （RW） is only 8 nm. The efficiency of the device was relatively high because of the efficiency gain effect of the microcavity effect. The maximum current efficiency of the fabricated device is 11.5 cd/A at 12 V, which is much higher than that of the bottom-emitting device.

关 键 词：光学模拟 有机发光器件 微腔 蓝移 顶发射 

分 类 号：TN304.5[电子电信—物理电子学] TN383