S⋯Cl intramolecular interaction: An efficient strategy to improve power conversion efficiency of organic solar cells

Sai Jiang, Linqing Qin, Hao Chen, Xiaoxi Wu, Yuhao Li, Lei Lv, Jingya Chen, Youtian Tao, Shiming Zhang, Xinhui Lu, Qinqin Shi, Hui Huang

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

Noncovalent conformational locks (NCLs) including S⋯N, Se⋯O, and S⋯O etc. Have been an effective strategy to improve the planarity and rigidity, and charge transport mobility of organic/polymeric semiconductors. Herein, by replacing methyl group (ITMIC) with chlorine (ITCIC) in the π-bridge, the planarity and rigidity of the π-conjugated skeleton was enhanced by introduction of S⋯Cl NCLs, thus the charge transport mobility was improved accordingly. As a result, PM6:ITCIC based organic solar cells showed impressive PCE of 11.34%, much higher than that based on PM6:ITMIC. This contribution demonstrated a novel kind NCLs (S⋯Cl) for improving the performance of organic solar cells.

Original languageEnglish
Article number108416
JournalDyes and Pigments
Volume179
DOIs
StatePublished - Aug 2020

Keywords

  • Charge transport mobility
  • Non-fullerene acceptor
  • Noncovalent conformational locks
  • Organic solar cells

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