研究目的
To investigate the use of benzothiophene dioxide as the end-capping group for a nonfullerene acceptor in organic solar cells, aiming to achieve extended UV?vis absorption into the near-IR region and relatively low frontier molecular orbital energy levels.
研究成果
Benzothiophene dioxide is a novel electron-withdrawing end-capping unit for ITBC, demonstrating potential as an electron acceptor in nonfullerene organic solar cells with a power conversion efficiency of 4.17%.
研究不足
The relatively lower device performance may be due to the sulfonyl functional group of the end-capping moiety having oxygen atoms orthogonal to the plane of the backbone, potentially leading to expanded π?π stacking distances between acceptor molecules and affecting efficient charge transfer.
