期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 21, 期 19, 页码 6956-6961出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm10214a
关键词
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资金
- National Science Foundation [DMR-0120967]
- Department of Energy [DE-FC3608GO18024/A000]
- AFOSR [FA9550-09-1-0426]
- Office of Naval Research [N00014-11-1-0300]
- World Class University (WCU) through the National Research Foundation of Korea under the Ministry of Education, Science and Technology [R31-21410035]
- Boeing Foundation
A novel [6,6]-phenyl-C-61-butyric acid methyl styryl ester (PCBM-S) was synthesized and employed as an electron transporting interfacial layer for bulk heterojunction polymer solar cells with an inverted device configuration. After the deposition of PCBM-S film from solution, the styryl groups of PCBM-S were polymerized by post-thermal treatment to form a robust film which is resistive to common organic solvents. This allows the solution processing of upper bulk heterojunction film without eroding the PCBM-S layer. Additionally, the PCBM-S was n-doped with decamethylcobaltocene (DMC) to increase the conductivity of the film, which resulted in a significantly improved power conversion efficiency from 1.24% to 2.33%. The improved device performance is due to the decrease of series resistance and improved electron extraction property of the n-doped PCBM-S film.
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