Transparent organic light-emitting diodes based on Cs2CO3:Ag/Ag composite cathode

被引:6
|
作者
Liu Qian [1 ]
Duan Lian [1 ]
Zhang DeQiang [1 ]
Qiao Juan [1 ]
Wang LiDuo [1 ]
Dong GuiFang [1 ]
Qiu Yong [1 ]
机构
[1] Tsinghua Univ, Key Lab Organ Optoelect & Mol Engn, Minist Educ, Dept Chem, Beijing 100084, Peoples R China
来源
CHINESE SCIENCE BULLETIN | 2010年 / 55卷 / 15期
基金
国家高技术研究发展计划(863计划);
关键词
organic light-emitting diode; Cs2CO3; transparent; cathode; LOW-WORK-FUNCTION; DEVICES; ELECTRODE; FILMS; LAYER;
D O I
10.1007/s11434-010-3150-3
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
The transparent organic light-emitting diodes (TOLEDs) based on Cs2CO3:Ag/Ag composite cathode are reported in this paper. They show higher efficiency and better stability than the control devices with the Cs2CO3/Ag cathode. The devices are highly transparent, and show total efficiencies from both sides of the devices comparable with conventional bottom-emitting devices. The electroluminescence (EL) spectrum from the cathode side of the device is closer to the photoluminescence (PL) spectrum of the light-emitting material than that from the anode side. The effect of the cathode Ag thickness on the device performance has been investigated. It is observed that a critical Ag thickness of 15 nm is required to form a good Ag film with high optical transparency and electrical conductivity.
引用
收藏
页码:1479 / 1482
页数:4
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