Issue 6, 2023

Pentafluorosulfanyl-functionalised BODIPY push–pull dyes for p-type dye-sensitized solar cells

Abstract

We report a push–pull BODIPY-based dye functionalised with an electronegative SF5 group at the meso position for applications in photocathodes in tandem dye-sensitized solar cells (DSSCs). The push–pull character enhances charge-transfer from the mesoporous NiO cathode surface towards the redox mediator. A Knoevenagel condensation reaction was used to introduce the carboxylic acid to anchor the dye to the oxide surface, via a styryl linker which increases the conjugation in the molecule and shifts the absorption to the red. The room-temperature synthesis and high yields, make the dye promising for manufacture on a large scale. The dye was applied in p-DSSCs giving a power conversion efficiency (0.066%), a short circuit photocurrent (JSC) of 3.84 mA cm−2, open circuit voltage (VOC) of 58 mV and fill factor of 30%.

Graphical abstract: Pentafluorosulfanyl-functionalised BODIPY push–pull dyes for p-type dye-sensitized solar cells

Supplementary files

Article information

Article type
Paper
Submitted
17 Jul 2022
Accepted
02 Jan 2023
First published
21 Feb 2023
This article is Open Access
Creative Commons BY license

Sustainable Energy Fuels, 2023,7, 1494-1501

Pentafluorosulfanyl-functionalised BODIPY push–pull dyes for p-type dye-sensitized solar cells

R. D. James, L. S. Alqahtani, J. Mallows, H. V. Flint, P. G. Waddell, O. J. Woodford and E. A. Gibson, Sustainable Energy Fuels, 2023, 7, 1494 DOI: 10.1039/D2SE00977C

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