Electroluminescence Characteristics of a New Green-Emitting Phenylphenothiazine Derivative with Phenylbenzimidazole Substituent

被引：15

作者：

Ahn, Yeonseon ^{[1
]}

Jang, Da Eun ^{[2
]}

Cha, Yong-Bum ^{[2
]}

Kim, Mansu ^{[1
]}

Ahn, Kwang-Hyun ^{[2
]}

Kim, Young Chul ^{[1
]}

机构：

[1] Kyung Hee Univ, Dept Chem Engn, Gyeonggi Do 446701, South Korea

[2] Kyung Hee Univ, Dept Appl Chem, Gyeonggi Do 446701, South Korea

来源：

BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2013年 / 34卷 / 01期

基金：

新加坡国家研究基金会;

关键词：

Phenylphenothiazine derivative; Donor-acceptor architecture; Green-emitting OLED; DONOR-ACCEPTOR MOLECULES; PHENOTHIAZINE; EMISSION;

D O I：

10.5012/bkcs.2013.34.1.107

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new green-emitting material with donor-acceptor architecture, 3,7-bis(1-'-phenylbenzimidazole-2'-yl)-10-phenylphenothiazine (BBPP) was synthesized and its thermal, optical, and electroluminescent characteristics were investigated. Organic light-emitting diodes (OLEDs) with four different multilayer structures were prepared using BBPP as an emitting layer. The optimized device with the structure of [ITO/2-TNATA (40 rim)/BBPP (30 nm)/TPBi (30 nm)/Alq3 (10 nm)/LiF (1 nm)/Al (100 nm)] exhibited efficient green emission. Enhanced charge carrier balance and electron mobility in the organic layers enabled the device to demonstrate a maximum luminance of 31,300 cd/m(2), a luminous efficiency of 6.83 cd/A, and an external quantum efficiency of 1.62% with the CIE 1931 chromaticity coordinates of (0.21, 0.53) at a current density of 100 mA/cm(2).

引用

页码：107 / 111

页数：5

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