Syntheses and solar cell applications of conjugated copolymers containing tetrafluorophenylene units

Cost-effective polymer donors with simple structure for organic solar cells

“…86 Benzene is a low-cost structural simple unit without obvious electron withdrawing or electron donating properties. 87 The functionalization of benzene with halogen atoms could lower the HOMO and LUMO energy levels 49,51,88 and adjust the charge mobilities 89,90 of benzene-based polymers. In recent years, a series of cost-effective polymer donors based on functionalized benzene have been synthesized, and the parameters of related OSCs are summarized in Table 4.…”

Syntheses of PCDTBT containing tetrafluorobenzene as electron-withdrawing group with deep HOMO energy level and applications for photovoltaics

“…We reported conjugated polymers with tetrafluorophenylene moiety to provide lower band gaps and deeper HOMO energy levels for better coverage of the solar spectrum and higher V OC , respectively [17].…”