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- W2261127795 endingPage "022303" @default.
- W2261127795 startingPage "022303" @default.
- W2261127795 abstract "Abstract Owing to the formation of the charge transfer (CT) state, the open-circuit voltage ( V oc ) of organic photovoltaic (OPV) devices commonly suffers an energy loss of 0.8–1.3 eV from the effective bandgap. Benzotrithiophene (BTT)-based low-bandgap polymers that we have recently reported showed deep HOMO levels (−5.4 to −5.6 eV) and moderate optical bandgaps of 1.7–1.8 eV, which resulted in high V oc ’s of 0.78–0.98 V and relatively low energy losses when blended with methano[60]fullerene (PCBM). Here, we report the temperature-dependent dark current analysis of organic solar cells of BTT copolymers:PCBM blends. Shockley diode analyses revealed the dominant contribution of CT energy and concomitant pre-exponential factor of dark saturation current density associated with charge recombination. The findings could establish a fundamental aspect to draw a design rule in BTT-based polymers towards their evolutions in OPV devices." @default.
- W2261127795 created "2016-06-24" @default.
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- W2261127795 date "2016-01-15" @default.
- W2261127795 modified "2023-09-25" @default.
- W2261127795 title "Insight into the energy loss in organic solar cells based on benzotrithiophene copolymers: A dark current analysis at low temperature" @default.
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- W2261127795 doi "https://doi.org/10.7567/jjap.55.022303" @default.
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