Abstract
The performances of polymer solar cells (PSCs) have been greatly improved in recent years mainly ascribed to the development of various donor-acceptor (D-A) conjugated photovoltaic polymers. Among the different donor monomers used for building D-A conjugated photovoltaic polymers, indacenodithiophene (IDT) has attracted much attention due to its many advantages, like high hole mobility and easy structural modification. So far, a plenty of IDT-based polymers have been proved to deliver high power conversion efficiencies through rational molecular design. In this review, we focus on structural modification strategies on IDT monomer, including attaching various side chains and importing heteroatoms substituents, and photovoltaic properties of the resultant IDT-based D-A polymers with different acceptor monomers. We hope this review could provide an important guideline for the design of high performance IDT-based PSCs.
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