Electronic structures and electron-injection mechanisms of cesium-carbonate-incorporated cathode structures for organic light-emitting devices

被引：169

作者：

Wu, CI ^{[1
]}

Lin, CT

Chen, YH

Chen, MH

Lu, YJ

Wu, CC

机构：

[1] Natl Taiwan Univ, Dept Elect Engn, Taipei 10617, Taiwan

[2] Natl Taiwan Univ, Grad Inst Electroopt Engn, Taipei 10617, Taiwan

[3] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 10617, Taiwan

来源：

APPLIED PHYSICS LETTERS | 2006年 / 88卷 / 15期

关键词：

D O I：

10.1063/1.2192982

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this letter, we investigate electronic structures and electron-injection mechanisms of the effective cathode structures for organic light-emitting devices incorporating cesium carbonate (Cs2CO3), either deposited as an individual thin injection layer or doped into the organic electron-transport layers. The electronic structures and the interface chemistry studied by ultraviolet and x-ray photoemission spectroscopy show that the enhanced electron injection is associated with strong n-doping effects and increase of electron concentrations in the electron-transport layer induced by Cs2CO3. Since such a reaction occurs without the presence of metals, cathode structures incorporating Cs2CO3 may be applied to a wide range of electrode materials. (c) 2006 American Institute of Physics.

引用

页数：3

共 22 条

[1] Efficiency and stability enhancement in organic light-emitting devices with CsF/Mg:Ag cathode [J].