Organic light-emitting diode based on a carbazole compound

被引：20

作者：

Liu, Yingliang

Di, Cong-an

Xin, Yuanrong

Yu, Gui

Liu, Yunqi

He, Qingguo

Bai, Fenglian

Xu, Shengang

Cao, Shaokui ^{[1
]}

机构：

[1] Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450052, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China

来源：

SYNTHETIC METALS | 2006年 / 156卷 / 11-13期

基金：

中国国家自然科学基金;

关键词：

carbazole; electroluminescence; OLED;

D O I：

10.1016/j.synthmet.2006.04.011

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A carbazole compound was synthesized by Knovenagel condensation and characterized by the measurements of H-1 NMR, IR and melting point. A multilayer organic light-emitting diode (OLED) using this compound as an active layer was fabricated by vacuum-deposition. This OLED showed a turn-on voltage of approximately 4.5 V and a maximum luminance of 910 cd/m(2). Additionally, the maximum luminous efficiency was found as 0.95 cd/A, at this point the device luminance was measured as 146 cd/m(2) at an operating voltage of 7 V. The coordinate value of CIE 1931 was calculated as (x, y) = (0.3843, 0.5345) from the electroluminescence (EL) spectrum, which suggested that the device can emit a yellow-green light. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：824 / 827

页数：4

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