Enhancement of the luminance efficiency for top-emitting DB-PPV polymer light-emitting diodes with Ca/Ag cathode

被引：2
|
作者：
Tsai, Chia-Hung [1 ]
Chang, Mau-Shang [1 ]
Liu, Chien-Chih [2 ]
Chu, Sheng-Yuan [1 ,3 ]
Hung, Chen-I [4 ]
Houng, Mau-Phon [1 ]
机构：
[1] Natl Cheng Kung Univ, Adv Optoelect Technol Ctr, Inst Microelect, Dept Elect Engn, Tainan 701, Taiwan
[2] Nan Jeon Inst Technol, Dept Elect Engn, Tainan 737, Taiwan
[3] Natl Cheng Kung Univ, Ctr Micro Nano Sci & Technol, Tainan 701, Taiwan
[4] Natl Cheng Kung Univ, Dept Mech Engn, Tainan 701, Taiwan
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2008年 / 111卷 / 01期
关键词：
DB-PPV; top-emitting polymer light-emitting diodes; hole-blocking; microcavity;
D O I：
10.1016/j.matchemphys.2008.03.042
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The enhancement of the luminance efficiency of the top-emitting 2,3-dibutoxy-1,4-polyphenylene vinylene (DB-PPV) polymer light-emitting diodes (PLEDs) with Ca/Ag cathode has been investigated in this work. The luminance efficiency of 2.9 cd A(-1) (at 10 mA) for the thickness of Ca/Ag cathode of 10/15 nm is achieved by our devices. In this paper, partially oxidized CaOx film is proposed to have the capability of hole-blocking as well as the buffer layer on condition of the suitable Ag thickness of Ca/Ag cathode. The tuning ability of colors by simply adjusting the thickness of the DB-PPV emitting layer is available for the devices. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：158 / 161
页数：4
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