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Benzimidazole‐indole‐chalcone connected methacrylate‐based side chain D‐π‐A polymer and its application in organic photovoltaics Part A Polymer chemistry

Author:
Selvam, Ramasamy, Subramanian, Kathavarayan
Source:
Journal of polymer science 2017 v.55 no.6 pp. 997-1007
ISSN:
0887-624X
Subject:
electron transfer, lighting, photosensitizing agents, photovoltaic cells, polymers, solar energy
Abstract:
Herein, we report four metal‐free organic polymethacrylates (In‐In‐BzI)PMA, (Ac‐In‐BzI)PMA, (TPA‐In‐BzI)PMA, and (Py‐In‐BzI)PMA with pendant chromophores donor‐π‐conjugated‐acceptor (D‐π‐A) molecular framework as photosensitizers for dye‐sensitized solar cells (DSSCs). In which the donor‐acceptor units are attached by an indole‐chalcone extending side chain to inhibit back electron transfer and charge recombination; the π‐linker component contains varied chalcone‐based substituents to enhance the sunlight‐harvesting ability of the solar device. Photon‐current cells based on the DSSC format were fabricated using the polymers as sensitizers. The DSSC device assembled using (TPA‐In‐BzI)PMA exhibits a considerably better IPCE peak and J–V response, with an overall power conversion efficiency of 3.70% under the illumination of AM 1.5G (100 mW cm–²). © 2017 Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 997–1007
Agid:
5719483