Efficient electroluminescence from a rubrene sub-monolayer inserted between electron- and hole-transport layers

被引：55
作者：
Matsumura, M [1 ]
Furukawa, T [1 ]
机构：
[1] Osaka Univ, Res Ctr Photoenerget Organ Mat, Toyonaka, Osaka 5608531, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2001年 / 40卷 / 5A期
关键词：
electroluminescence; organic EL; rubrene;
D O I：
10.1143/JJAP.40.3211
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Efficient electroluminescence (EL) was obtained from rubrene by inserting its sub-monolayer between the Al-hydroxyquinoline (ALQ) and diamine layers. The highest EL current efficiency of 5.8 cd A(-1) was attained by inserting a 0.05-nm-thick rubrene layer between the ALQ and diamine layers; in addition, the current-voltage curve was shifted to a lower voltage. These properties are favorable for the construction of efficient EL devices. The enhanced EL efficiency and the shift of the current-voltage curves are attributed to efficient trapping of holes by rubrene molecules at the interface.
引用
收藏
页码：3211 / 3214
页数：4
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