期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 135, 期 6, 页码 2207-2212出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja308628z
关键词
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资金
- U.S. Department of Energy through the EFRC program [DE-SC0001085]
- FENA [2009-NT-2048]
- Photovoltaics Program at ONR [N00014-11-10328]
- NSF-sponsored MRSEC through the Princeton Center for Complex Materials [DMR-0819860]
- U.S. Department of Defense through the National Defense Science & Engineering Graduate Fellowship Program
- National Science Foundation Graduate Research Fellowship [DGE-1144155]
- U.S. Department of Energy, Office of Basic Energy Sciences [DE-AC02-98CH10886]
This work explores the formation of well-defined molecular p-n junctions in solution-processed self-assembled heterojunction solar cells using dodecyloxy-substituted contorted hexabenzocoronene (12-c-HBC) as a donor material and phenyl-C-70-butyric acid methyl ester (PC70BM) as an acceptor. We find that the contorted 12-c-HBC molecules effectively assemble in solution to form a nested structure with the ball-shaped PC70BM. The result is a self-assembled molecular-scale p-n junction. When this well-defined p-n junction is embedded in active films, we can make efficient self-assembled solar cells with minimal amounts of donor material relative to the acceptor. The power conversion efficiency is drastically enhanced by the mode of donor and acceptor assembly within the film.
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