Efficient organic solar cells with helical perylene diimide electron acceptors.
نویسندگان
چکیده
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.
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ورودعنوان ژورنال:
- Journal of the American Chemical Society
دوره 136 43 شماره
صفحات -
تاریخ انتشار 2014