发光学报2011，Vol.32Issue(12)：1271-1275,5.DOI:10.3788/fgxb20113212.1271
MoO3为缓冲层的高效非掺杂蓝色有机发光二极管
Highly Efficient Nondoped Blue Organic Light-emitting Diode Using MoO3 as Anode Buffer Layer
摘要
Abstract
Contact properties between electrodes and organic layers play a key role for the performance of an organic device. Ohmic contacts at electrode/organic interfaces are required for an ideal device. In order to improve performance of 4,4'-bis(2,2'-diphenylvinyl)-l, l'-biphenyl (DPVBi, a typical blue organic luminescent material) based organic light-emitting diode, MoO3 was introduced at anode interface as a buffer layer and a highly efficient bright nondoped blue electroluminescent device with low driving voltage was fabricated. Luminescent efficiency of the device with a 0. 5-nm-thick MoO3 buffer layer is 18 times higher than that of the device without buffer layer, and 1.2 times higher than that of the device with a conventional copper phthalocy-anine (CuPc) buffer layer at a current density of 20 mA/cm2. Turn-on voltage, maximum external quantum efficiency and luminance of the device are 3. 3 V, 3. 1% and 16 000 cd/m2, respectively. Commission Internationale de lEclairage (CIE) co-ordinates are (0.15 , 0. 15). Realization of excellent device performance is attributed to formation of ohmic contact between anode and organics by insertion of MoO3.关键词
有机电致发光/蓝色/阳极缓冲层/MoO3Key words
luminescence/ organic electroluminescence/ blue/ anode buffer layer/ MoO3分类
信息技术与安全科学引用本文复制引用
倪蔚德,吴有智,张文林,张材荣,张定军..MoO3为缓冲层的高效非掺杂蓝色有机发光二极管[J].发光学报,2011,32(12):1271-1275,5.基金项目
甘肃省自然科学基金(1010RJZA035) （1010RJZA035）
教育部留学回国人员科研启动基金(第40批) （第40批）
国家自然科学基金(11164015,11164016)资助项目 （11164015,11164016）
