High Efficiency PPV-Based Polymer Light Emitting Diodes With Cs2CO3 Cathode

被引：0
作者：
Suhonen, Riikka [1 ,2 ]
Krause, Ralf [1 ]
Kozlowski, Fryderyk [1 ]
Sarfert, Wiebke [1 ]
Paetzold, Ralph [1 ]
Winnacker, Albrecht [2 ]
机构：
[1] Siemens AG, CT MM 1,Gunther Scharowsky Str 1, D-91058 Erlangen, Germany
[2] Univ Erlangen Nurnberg, Dept Mat Sci 6, D-91058 Erlangen, Germany
来源：
PHYSICS AND TECHNOLOGY OF ORGANIC SEMICONDUCTOR DEVICES | 2010年 / 1115卷
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study the phenomena resulting from the combination of a hole-dominant PPV-based light emitting polymer with an efficient electron injection layer of Cs2CO3 in light emitting diodes has been investigated. As a result, diodes with about 35 % higher efficiency were achieved with an optimized PPV Cs2CO3 structure in comparison to the traditional PPV-Ba structure. Additionally to the increased efficiency, also the lifetime of the Cs2CO3-diodes is comparable to the Ba-diodes implying that the long-term stability of the diodes is not affected by the optimized Cs2CO3-cathode. In this study, the influence of the Cs2CO3 thickness on the electrical and optical properties before, during and after the electrical stressing of the diodes are discussed.
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页码：177 / +
页数：2
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