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- W1966177712 abstract "This paper reports polymer solar cells with a 7% power conversion efficiency (PCE) based on bulk heterojunction (BHJ) composites of the alternating co-polymer, poly[N-9′′-hepta-decanyl-2,7-carbazole-alt-5,5-(4′,7′-di-2-thienyl-2′,1′,3′-benzothiadiazole) (PCDTBT), and the fullerene derivative [6,6]-phenyl C71-butyric acid methyl ester (PC71BM). As confirmed by transmission electron microscopy, solvent–vapor annealing (SVA) of the thin (70 nm) BHJ photoactive layer by exposure to chloroform vapor, for a short period of time (30 s) after deposition, leads to reconstructed nanoscale morphology of donor/acceptor domains, well-dispersed fullerene phase and effective photo-absorption of BHJ. Consequently, SVA-reconstructed devices with a PCDTBT:PC71BM blend ratio of 1:5 (wt%) exhibit ∼50% improvement in PCE, with short-circuit current Jsc = 15.65 mA/cm2, open-circuit voltage Voc = 0.87 V, and PCE = 7.03%, in comparison to those of the 1:4 (wt%) blends with SVA treatment." @default.
- W1966177712 created "2016-06-24" @default.
- W1966177712 creator A5063512042 @default.
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- W1966177712 date "2013-09-01" @default.
- W1966177712 modified "2023-09-24" @default.
- W1966177712 title "Solvent–vapor induced morphology reconstruction for efficient PCDTBT based polymer solar cells" @default.
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- W1966177712 doi "https://doi.org/10.1016/j.orgel.2013.05.014" @default.
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