发光学报2012，Vol.33Issue(6)：611-615,5.DOI:10.3788/fgxb20123306.0611
碳酸铯修饰Al作为反射阴极的倒置顶发射OLED器件
Efficient Inverted Top-emitting Organic Light-emitting Devices with Cesium Carbonate Modified Al Cathode
摘要
Abstract
Efficient inverted top-emitting organic light-emitting diode (ITOLED) using a thin Cs2CO3 layer modified Al as the reflective bottom cathode is demonstrated. With tris-(8-hydroxy-quinoline) aluminum ( Alq3) as emitting layer and Mo03/Ag as semitransparent anode, the Al/ Cs2CO3 based ITOLED shows a tune-on voltage of 3. 6 V, luminance efficiency of 9. 8 cd/A and 3.4 lm/W, which are much better than those (4.2 V, 8.6 cd/A, 2.85 Im/W) obtained from Mg: Ag based ITOLED and those (5 V, 5. 5 cd/A, 1. 57 lm/W) obtained from bare Al based ITOLED. Electron-only devices research shows that a stronger electron-injection is obtained from Al/Cs2CO3 than Mg: Ag and Al, which is attributed to the lower work function of Al/Cs2CO3 than Mg: Ag and Al. The good performance of Al/Cs2CO3 based ITOLED is attributed to the efficient electron injection from the Al/Cs2CO3 cathode as well as a microcavity effect.关键词
有机电致发光/Cs2CO3/倒置顶发射/电子注入Key words
OLED/ Cs2CO2/ inverted top-emitting/ electron injection分类
信息技术与安全科学引用本文复制引用
张浩,王立,容佳玲,曹进,张志林,蒋雪茵,张建华..碳酸铯修饰Al作为反射阴极的倒置顶发射OLED器件[J].发光学报,2012,33(6):611-615,5.基金项目
上海市科委(09ZR1411900) （09ZR1411900）
国家863计划(2010AA03A337)资助项目 （2010AA03A337）
