期刊
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
卷 28, 期 6, 页码 C6M104-C6M107出版社
A V S AMER INST PHYSICS
DOI: 10.1116/1.3517513
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资金
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [0901759] Funding Source: National Science Foundation
Poly (3- hexylthiophene) (P3HT)- C-60 organic photovoltaic devices with interpenetrating donor- acceptor interfaces were fabricated by oblique thermal deposition of C-60 into the P3HT nanogratings. The uniformity and step coverage of C-60 infiltration into the P3HT nanostructures, which can determine the device performance, were dependent on the C-60 evaporation angle. It was also observed that the C-60 deposition rate and thickness determine the efficiency. A 50% improvement in power conversion efficiency is observed due to the increased exciton dissociation rate at the larger area P3HT- C-60 interface at optimal C-60 deposition filling. With the proposed technique, a highly efficient organic solar cell using an insoluble acceptor has been fabricated. (C) 2010 American Vacuum Society. [DOI: 10.1116/1.3517513]
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