Suitability of lithium doped electron injection layers for organic semiconductor lasers

被引：18

作者：

Rabe, T. ^{[1
]}

Hamwi, S. ^{[1
]}

Meyer, J. ^{[1
]}

Goerrn, P. ^{[1
]}

Riedl, T. ^{[1
]}

Johannes, H.-H. ^{[1
]}

Kowalsky, W. ^{[1
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Hochfrequenztech, D-38092 Braunschweig, Germany

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 15期

关键词：

D O I：

10.1063/1.2720757

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Lithium doped 2,2('),2(')-(1,3,5-benzenetryl)tris(1-phenyl)-1H-benzimidazol (TPBi) as electron injection layer in organic laser diodes is investigated. The optical material absorption of optimum doped Li:TPBi is as low as 300 cm(-1) at lambda=600 nm. Kelvin probe analysis demonstrates that thin layers (5 nm) of Li:TPBi already enable efficient electron injection from low optical loss transparent conducting oxide contacts. Moreover, stable current densities of about 100 A/cm(2) can be injected. The waveguide losses added due to these Li:TPBi layers can be as low as 3 cm(-1). These results present a major step towards electrically contacted, low-loss organic laser structures. (c) 2007 American Institute of Physics.

引用

页数：3

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