Donor-acceptor organic dyes are of interest in different solar applications, such as light absorbers in dye sensitized solar cells, or photosensitizers for photoinduced water splitting.1,2 Herein we present a series of dyes incorporating different heterocyclic units as sensitizers for TiO2 photoelectrodes prepared by screen-printing, investigated by means of steady-state optical techniques and femtosecond transient absorption spectroscopy. Sensitised electrodes were analysed and compared with the same dyes in solution, to unravel excited state deactivation pathways and charge carrier dynamics.

Fast and ultrafast photoinduced charge transfer processes in dye sensitized TiO2 electrodes

Ruani, Federica
Primo
;
Ventura, Barbara
Secondo
;
Barbieri, Andrea;Bandini, Elisa;Dessì, Alessio;Zani, Lorenzo;Sangiorgi, Nicola;Sangiorgi, Alex;Sanson, Alessandra
Penultimo
;
Mordini, Alessandro
Ultimo
2024

Abstract

Donor-acceptor organic dyes are of interest in different solar applications, such as light absorbers in dye sensitized solar cells, or photosensitizers for photoinduced water splitting.1,2 Herein we present a series of dyes incorporating different heterocyclic units as sensitizers for TiO2 photoelectrodes prepared by screen-printing, investigated by means of steady-state optical techniques and femtosecond transient absorption spectroscopy. Sensitised electrodes were analysed and compared with the same dyes in solution, to unravel excited state deactivation pathways and charge carrier dynamics.
2024
Istituto per la Sintesi Organica e la Fotoreattivita' - ISOF
Istituto di Chimica dei Composti OrganoMetallici - ICCOM -
Istituto di Scienza, Tecnologia e Sostenibilità per lo Sviluppo dei Materiali Ceramici - ISSMC (ex ISTEC)
Donor-acceptor dye, Photosensitizer, TiO2 photoelectrode, Transient absorption, Spectroelectrochemistry
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.14243/524345
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