Organic dyes have been prepared to evaluate the ability of 2,5-dithienylpyrrole (DTP) to act as a donor substituent in D-pi-A sensitizers for DSSCs. Using a styryl pi-bridge the dyes were found to be excellent sunlight harvesters when adsorbed on TiO2 photoanodes with absorbances >3 in the 300-550 nm region. Calculations as well as transient absorption spectroscopy in both solution and on a TiO2 surface revealed that they were favourable for efficient injection and regeneration.
2,5-Dithienylpyrrole (DTP) as donor component in DTP-π-A organic sensitizers: photophysical and photovoltaic properties
CARLI, Stefano;CARAMORI, Stefano;
2015
Abstract
Organic dyes have been prepared to evaluate the ability of 2,5-dithienylpyrrole (DTP) to act as a donor substituent in D-pi-A sensitizers for DSSCs. Using a styryl pi-bridge the dyes were found to be excellent sunlight harvesters when adsorbed on TiO2 photoanodes with absorbances >3 in the 300-550 nm region. Calculations as well as transient absorption spectroscopy in both solution and on a TiO2 surface revealed that they were favourable for efficient injection and regeneration.File in questo prodotto:
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