Tailoring polymer acceptors by electron linkers for achieving efficient and stable all-polymer solar cells.

ABSTRACT: The trade-off between efficiency and stability is a bit vague, and it can be tricky to precisely control the bulk morphology to simultaneously improve device efficiency and stability. Herein, three fused-ring conducted polymer acceptors containing furan, thiophene and selenophene as the electron linkers in their conjugated backbones, namely PY-O, PY-S and PY-Se, were designed and synthesized. The electron linker engineering affects the intermolecular interactions of relative polymer acceptors and their charge transport properties. Furthermore, excellent material compatibility was achieved when PY-Se was blended with polymer donor PBDB-T, resulting in nanoscale domains with favorable phase separation. The optimized PBDB-T : PY-Se blend not only exhibits maximum performance with a power conv

SUBMITTER: Wu Q 

PROVIDER: S-EPMC8824755 | biostudies-literature | 2022 Feb

REPOSITORIES: biostudies-literature