物理学报Issue(19)：420-426,7.DOI:10.7498/aps.62.197204
基于连续性掺杂的高效全荧光白色有机电致发光器件的研究
Highly efficient all fluorescent white organic light-emitting devices made by sequential doping
摘要
Abstract
Highly efficient all fluorescent white organic light-emitting devices (WOLED) have been fabricated by means of sequential dop-ing. Fluorescent materials PT-01, PT-86 and PT-05 serve as the yellow guest, blue guest and fluorescent host, respectively. The emission layer consists of a few repeating cells, which are made of sequentially evaporated host and guest layers. From the analyses of the singlet exciton distribution and the influences of the thickness of the host layer, PT-86 and PT-01 are evaporated at the proper locations in the emission layer (EML), yielding a high efficiency and stable all fluorescent WOLEDs. The maximum current efficiency of the WOLED is 11.2 cd/A. In addition, the emission color of this WOLED is fairly stable, consistent with the Commission Inter-national de L’Eclairage coordinates, only showing changes (±0.004, ±0.005) when luminance increasing from 159 cd/m2 to 20590 cd/m2 . The devices based on the method of sequential doping not only have the similar performance compared with that fabricated by co-evaporation doping, but also have higher repeatability, which makes them appropriate for mass-production.关键词
白色有机电致发光器件/连续性掺杂/能量转移/可重复性Key words
WOLED/sequential doping/energy transfer/repeatability引用本文复制引用
吴清洋,谢国华,张振松,岳守振,王鹏,陈宇,郭闰达,赵毅,刘式墉..基于连续性掺杂的高效全荧光白色有机电致发光器件的研究[J].物理学报,2013,(19):420-426,7.基金项目
国家重点基础研究发展计划(批准号:2010CB327701)和国家自然科学基金(批准号:61275033)资助的课题 （批准号:2010CB327701）
