Efficiency enhancement of tandem organic light-emitting devices by a combined charge generation layer and organic n-type bis(ethylenedithio)-tetrathiafulvalene-doped electron transport layer

被引：10

作者：

Cho, Jin Taek ^{[1
]}

Kim, Dae Hun ^{[1
]}

Koh, Eun Im ^{[1
]}

Kim, Tae Whan ^{[1
]}

机构：

[1] Hanyang Univ, Dept Elect & Comp Engn, Seoul 133791, South Korea

来源：

THIN SOLID FILMS | 2014年 / 570卷

基金：

新加坡国家研究基金会;

关键词：

Tandem organic light-emitting devices; Luminance efficiency; Electron transport layer;

D O I：

10.1016/j.tsf.2014.09.012

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

While the operating voltage of the tandem organic light-emitting devices (OLEDs) with both an organic p-type 1,4,5,8,9,11-hexaazatriphenylene hexacarbonitrile charge generation layer and a bis(ethylenedithio)-tetrathiafulvalene (BEDT-TTF)-doped 1,3,5-tris(N-phenylbenzimiazole-2-yl) benzene (TPBi) electron transport layer (ETL) was 1.3 V lower than that of the tandem OLEDs with a BEDT-TTF-undoped TPBi ETL. Luminance efficiency of the tandem OLEDs with a BEDT-TTF-doped TPBi ETL was 3.6 cd/A higher than that of the typical OLEDs. The increase in the luminance efficiency and the decrease in the operating voltage of the tandem OLEDs were attributed to improved electron injection due to the insertion of the BEDT-TTF-doped TPBi ETL. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：63 / 67

页数：5

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