发光学报2012，Vol.33Issue(2)：192-196,5.DOI:10.3788/fgxb20123302.0192
发光区插入超薄LiF层对有机电致发光器件性能的影响
Effects of Inserted LiF Thin Film Between EML and ETL on OLEDs Performance
摘要
Abstract
The performance of two DCM: Alq3 based on red organic light-emitting diodes( OLEDs) were compared. In device A, ultrathin LiF was inserted between emitting layer and electron transporting layer, the other without inserting layer was named device B. As a result, device A showed a maximum EQE( external quantum efficiency) of 5.9% ,which was obtained under the highest brightness 76 740 cd/m2 with current density of 487 mA/cm2. Correspondingly, the internal quantum efficiency of 40% was far exceeded the theoretical upper limit of 25% for fluorescent OLEDs. We attributed the unusual phenomenon to the manipulation of the charge transfer state mixing and the electrical field effect on the excitons.关键词
外量子效率/有机荧光/有机电致发光Key words
external quantum efficiency/ organic fluorescence/ organic light-emitting diodes分类
信息技术与安全科学引用本文复制引用
贺小光,田苗苗,荀显超,李春杰..发光区插入超薄LiF层对有机电致发光器件性能的影响[J].发光学报,2012,33(2):192-196,5.基金项目
吉林省教育厅"十二五"科学技术研究项目 （）
高效率有机太阳能电池研究 （）
长春师范学院自然科研基金(349437-01219) （349437-01219）
