Efficient Organic Solar Cells with Helical Perylene Diimide Electron Acceptors
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- 14 October 2014
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 136 (43) , 15215-15221
Abstract
We report an efficiency of 6.1% for a solution-processed non-fullerene solar cell using a helical perylene diimide (PDI) dimer as the electron acceptor. Femtosecond transient absorption spectroscopy revealed both electron and hole transfer processes at the donor–acceptor interfaces, indicating that charge carriers are created from photogenerated excitons in both the electron donor and acceptor phases. Light-intensity-dependent current–voltage measurements suggested different recombination rates under short-circuit and open-circuit conditions.Keywords
Funding Information
- Division of Materials Research (DMR 1321405)
- Basic Energy Sciences (DE-FG02-01ER15264)
- National Natural Science Foundation of China (21105077)
- Ministry of Education of the People's Republic of China (IRT1269)
- Shanghai Municipal Education Commission (2013-57)
- Science and Technology Commission of Shanghai Municipality (12nm0504000)
- International Joint Laboratory on Resource Chemistry
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