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- W584455874 abstract "Low-cost neat C70 was successfully utilized to fabricate solution-processable bulk heterojunction (BHJ) organic photovoltaics (OPVs) by combining the neat C70 with an amorphous polymer, PEDOTNDIF, which was also synthesized at low cost by using a two-step direct arylation reaction. The optimized BHJ OPV using PEDOTNDIF:C70 exhibited a short-circuit current density (Jsc) of 8.70 mA cm−2, an open-circuit voltage of 0.75 V, a fill factor of 0.36, and a power conversion efficiency (PCE) of 2.33%, as compared to 1.46 mA cm−2, 0.80 V, 0.26, and 0.30%, respectively, for the BHJ OPV fabricated using PEDOTNDIF:PC70BM. The much-improved PCE (Jsc) is mainly due to the strong acceptor nature of neat C70, which needs to efficiently separate photo-excitons into free carriers. A good miscibility in the PEDOTNDIF:C70-based BHJ film with a large donor/acceptor interfacial area was also confirmed by characterizing atomic force microscopy images of the BHJ films and comparing PCEs of planar-heterojunction OPVs with PEDOTNDIF/C70 bilayers." @default.
- W584455874 created "2016-06-24" @default.
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- W584455874 date "2015-10-01" @default.
- W584455874 modified "2023-09-27" @default.
- W584455874 title "Improved power conversion efficiency of bulk-heterojunction organic photovoltaic cells using neat C70 as an effective acceptor for an amorphous π-conjugated polymer" @default.
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- W584455874 doi "https://doi.org/10.1016/j.orgel.2015.06.024" @default.
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