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Green-single-solvent-prepared polymer solar cells (PSCs) with efficiency of 9.7% based on PBDT-TS1:PC71BM are realized without resorting to any additives or further treatments. An environment-friendly solvent 2-methylanisole is proposed to fabricate PSCs for the first time. It reveals the possibility of replacing binary systems with a single solvent to fabricate highly efficient PSCs.
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Zhang et al. (2016) studied this question.
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