Abstract
A new wide bandgap copolymer (PBZ-m-CF3) based on a trifluoromethyl-p-alkoxyphenyl substituted benzodithiophene unit is designed and synthesized. PSCs based on PBZ-m-CF3/ITIC with toluene as the solvent show a high PCE of 10.4% with a Voc of 0.94 V, a Jsc of 18.4 mA cm−2 and a FF of 60.2%.
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