A red to blue series of push–pull dyes for NiO based p-DSSCs. Issue 3 (5th January 2018)

• Record Type: Journal Article
• Authors: Brisse, R.; Praveen, C.; Maffeis, V.; Bourgeteau, T.; Tondelier, D.; Berthelot, T.; Geffroy, B.; Gustavsson, T.; Raimundo, J. M.; Jousselme, B.
• Is Part Of: Sustainable energy & fuels. Volume 2:Issue 3(2018)
• Page Start: 648
• Page End: 654
• Publication Date: 2018-01-05
• Subjects: Renewable energy sources -- Periodicals; Fuel cells -- Periodicals; Electric batteries -- Periodicals; Electrochemistry -- Periodicals; 660.297
• DOI: 10.1039/c7se00474e
• Languages: English
• ISSNs: 2398-4902

Abstract

Abstract : The strength of the acceptor group of triphenylamine-bithiophene dyes changes their absorption range and photovoltaic properties. Abstract : Finding efficient dyes for NiO photocathodes either for inverse or tandem DSSCs is essential to developing these promising low-cost solar cells. This paper reports the design, synthesis and physical property characterization of four new triphenylamine–bithiophene push–pull dyes with acceptors of increasing electronic affinity, in order to shift their absorption to the red region of the visible spectrum. The dyes were tested in a p-type DSSC configuration with 850 nm NiO ink-jet printed photocathodes and their performances were compared with that of the reference dyeP1 . With an iodine electrolyte, one of the dyes, possessing a 1, 3-diethyl-2-thiobarbituric acceptor, shows superior performance toP1, with PCE reaching 0.124% and a J SC of 4.32 mA cm −2 .