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题目:

The doping effect of cesium-based compounds on carrier transport and operational stability in organic light-emitting diodes

 

 

作者:

Yan-Hong Deng, Yan-Qing Li*, Qing-Dong Ou, Qian-Kun Wang, Fu-Zhou Sun, Xiang-Yu Chen*, Jian-Xin Tang*

 

单位:

Institute of Functional Nano and Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Jiangsu Key Laboratory for Carbon-based Functional Materials and Devices, Soochow University, Suzhou 215123, China.

 

 

摘要:

The doping effect of cesium compounds (i.e., Cs2CO3, CsN3 and CsF) doped electron injection layer (EIL) on charge transport properties and operational stability of organic light-emitting diodes (OLEDs) was systematically investigated in this work. It has been found that device characteristics and lifetime are highly dependent on the doping constituent materials. The doping of cesium compounds in EIL can improve the charge injection and transport of OLEDs, due to the increase in conductivity and reduction in electron injection barrier. Apart from the difference in electrical characteristics, the operational stability of OLEDs is strongly influenced by the doping mechanism of different cesium compounds in the EILs. The OLED device using Cs2CO3 as the n-type dopant for the EIL shows a superiority in both electrical property and operational lifetime.

 

 

影响因子:

3.836

 

 

分区情况:

1

 

 

链接:

http://www.sciencedirect.com/science/article/pii/S1566119914001074


 

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