Yuchong Yang, Renming Wu, Xin Wang, Xiaopeng Xu, Zuojia Li, Kai Li and Qiang Peng
Chem. Commun., 2014,50, 439-441
DOI:
10.1039/C3CC47677D,
Communication
Conjugated copolymers based on isoindigo/fluorinated isoindigo and bis(dialkylthienyl)benzodithiophene, PBDTT–ID and PBDTT–FID, were designed and synthesized for organic photovoltaic applications. The isoindigo fluorination made PBDTT–FID show high PCE of 5.52% and 7.04% in its conventional and inverted PSCs, respectively.