发光学报2012，Vol.33Issue(4)：422-427,6.DOI:10.3788/fgxb20123304.0422
采用复合空穴注入层提高有机电致发光器件的性能
Improved Performance of Organic Light Emitting Diodes Using Combined Hole-injecting Layer
摘要
Abstract
A double layer NPB/Alq3 heterojunction organic light emitting device using Ag/4-FTP (SAM)/m-MTDATA as combined hole-injecting layer was fabricated. The device performance was studied and compared with the control device. The effect of the Ag layer thickness on the device performance is also investigated. The variation of the spectral narrowing and intensity enhancement can be explained with microcavity effects. The results revealed that indium tin oxide (ITO) anode modified with Ag(5 nm)/ 4-FTP(SAM) demonstrated good transparency, enhanced hole injection ability and smooth interface morphology, which result in an improved device performance. The highest luminance of 34 680 cd/m2 at 12 V and a luminous efficiency of 6. 9 cd/A were achieved for the device with the structure of ITO/Ag/4-FTP( SAM)/m-MTDATA/NPB/Alq3/LiF/Al. However, the control device showed 25 300 cd/m2 at the same bias.关键词
自组装单分子膜/阳极/有机电致发光器件/微腔效应/电流效率Key words
self-assembled monolayer/anode/organic light-emitting devices/microcavity effects/current efficiency分类
信息技术与安全科学引用本文复制引用
刘爱华,杨利营2..采用复合空穴注入层提高有机电致发光器件的性能[J].发光学报,2012,33(4):422-427,6.基金项目
国家自然科学基金(50503017) （50503017）
天津市自然科学基金(07JCYBJC03200) （07JCYBJC03200）
天津市“材料物理与化学”重点学科资助项目 （）
