S⋯Cl intramolecular interaction: An efficient strategy to improve power conversion efficiency of organic solar cells. (August 2020)

• Record Type: Journal Article
• Authors: Jiang, Sai; Qin, Linqing; Chen, Hao; Wu, Xiaoxi; Li, Yuhao; Lv, Lei; Chen, Jingya; Tao, Youtian; Zhang, Shiming; Lu, Xinhui; Shi, Qinqin; Huang, Hui
• Is Part Of: Dyes and pigments. Volume 179(2020)
• Publication Date: 2020-08
• Subjects: Non-fullerene acceptor -- Noncovalent conformational locks -- Charge transport mobility -- Organic solar cells; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2020.108416
• Languages: English
• ISSNs: 0143-7208

Abstract

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. Graphical abstract: Image 1