Naturally formed graded junction for organic light-emitting diodes

被引：27

作者：

Shao, Y ^{[1
]}

Yang, Y ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 12期

关键词：

D O I：

10.1063/1.1605800

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter, we report naturally-formed graded junctions (NFGJ) for organic light-emitting diodes (OLEDs). These junctions are fabricated using single thermal evaporation boat loaded with uniformly mixed charge transport and light-emitting materials. Upon heating, materials sublimate sequentially according to their vaporizing temperatures forming the graded junction. Two kinds of graded structures, sharp and shallow graded junctions, can be formed based on the thermal properties of the selected materials. The NFGJ OLEDs have shown excellent performance in both brightness and lifetime compared with heterojunction devices. (C) 2003 American Institute of Physics.

引用

页码：2453 / 2455

页数：3

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