物理学报2012，Vol.61Issue(8)：432-439,8.
基于ZnS增透膜的顶发射白光有机发光二极管
Top-emitting white organic light-emitting diodes based on a ZnS light outcoupling layer
摘要
Abstract
Top-emitting white organic light-emitting diode （TEWOLED） has potential applications in lighting and full color displays. Microcavity effect in TEWOLED restrains the realization of the white emission with excellent optical and electric performances. In this paper, a ZnS film with a high refractive index used as a light outcoupling layer is introduced into the metal cathode to enhance its transmittivity to a maximal value in the blue light wavelength region. In addition, transfer matrix theory is utilized to optimize the thicknesses of the cathode and the ZnS outcoupling layer and the wide-angle interference is used to design the position of the blue emission layer inside the organic light-emitting diode. Based on the above work, the white light with relatively high luminous efficiency, good color purity, and small CIE coordinate change is acquired. The corresponding luminance and current efficicency are 9213 cd/m2 and 3 cd/A, respectively. The CIE coordinates belong to the white emission and are near the white light equal-energy point. The white emission also shows stable spectra with respect to the observation angle, with a limited CIE coordinate change of （0.02, 0） for a large observation angle change from 0° to 60°.关键词
白光有机发光二极管/顶发射/增透膜/转移矩阵理论Key words
white organic light-emitting diodes/top-emitting/light outcoupling layer/transfer matrix theory分类
信息技术与安全科学引用本文复制引用
陈淑芬,邵茗,郭旭,钱妍,石乃恩,解令海,杨洋,黄维..基于ZnS增透膜的顶发射白光有机发光二极管[J].物理学报,2012,61(8):432-439,8.基金项目
国家重点基础研究发展计划（批准号：2009CB930600）、国家自然科学基金（批准号：60907047,60977024,21101095,20974046,21003076,51173081,61136003）、高等学校博士学科点专项科研基金（批准号：20093223120003）、江苏省自然科学基金（批准号：BK2009423）、江苏省高等学校自然科学基金（批准号：SJ209003,09KJBl50009,10KJB510013,TJ209035）、江苏省“青蓝”工程和南京邮电大学攀登计划（批准号：NY210015）资助的课题. （）
