A Blue Organic Light Emitting Diodes with Graded Junction for Hole Injection and a Step Barrier for Electron Injection

摘要：

Compared to the conventional hetero-junction OLED (Cell-HJ), a blue OLED with a graded junction in the interface between hole transporting layer (HTL) and emitted layer (EML) exhibited low drive voltage and significantly improved stability, however loss of efficiency. In order to redeem die decrease in efficiency, a step barrier for electron injection was proposed. The device with a graded junction in side of anode and a step barrier in the side of cathode showed high stability and improved efficiency. By studying Hole-only devices with graded junction and hetero-junction, electron-only cell with a step barrier, the enhancement of stability and improvement of efficiency have been explained.

关键词： Blue OLED Graded Junction Step Barrier Hole-only Device Stability

作者: Xue-Yin Jiang Zhi-Lin Zhang Wen-Qing Zhu Shao-Hong Xu

作者单位: Department of Materials Science, Shanghai University,Jiading, Shanghai 201800, China Department of Materials Science, Shanghai University,Jiading, Shanghai 201800, China;Key Laboratory Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai Universit

会议类型: 国际会议

会议名称: 2007亚洲显示国际会议（AD07）

会议地点: 上海

会议语种:英文

页码: 1356-1359

在线出版日期: 2007-03-12（万方平台首次上网日期，不代表论文的发表时间）