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

页码：3211 / 3214

页数：4

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