Exploration of the structure-property relationship of push-pull based dyads for single-molecule organic solar cells. (November 2019)

• Record Type: Journal Article
• Authors: Labrunie, Antoine; Habibi, Amir Hossein; Dabos-Seignon, Sylvie; Blanchard, Philippe; Cabanetos, Clément
• Is Part Of: Dyes and pigments. Volume 170(2019)
• Publication Date: 2019-11
• Subjects: Organic photovoltaics -- Single material organic solar cells -- Push-pull -- Fullerene; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2019.107632
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: The synthesis, characterization and use of three donor-σ-acceptor molecular dyads as organic photoactive layer are reported herein. Based on push-pull π-conjugated systems, the donor moiety is connected through a non-conjugated σ-linker to a PC61 BM derived block. Three different π-connectors, constituting the push-pull unit, namely a bithiophene (BT ), a thienothiophene (TT ) and a cyclopentadithiophene (CPDT ) units were selected to assess the impact of the chemical bridging (CPDT ) or fusing (TT ) on the electronic, electrochemical and therefore photovoltaic properties. Hence through a better understanding of the structure-property relationships, power conversion efficiencies exceeding the symbolic percent have been reached in single-molecule organic solar cells. Graphical abstract: Image 1 Highlights: Simple chemical modifications to improve the efficiencies of single-molecule organic solar cells. Better understanding of the structure-property relationships. Fabrication and characterization of single-molecule organic solar cells (SMOSCs).