A highly efficient ZnO photoanode for dye-sensitized solar cells was successfully grown by a simple, low cost, and scalable method. A nanostructured coral-shaped Zn layer was deposited by sputtering onto fluorine-doped tin oxide/glass slices at room temperature and then thermally oxidized in ambient atmosphere. Stoichiometry, crystalline phase, quality, and morphology of the film were investigated, evidencing the formation of a highly porous branched nanostructure, with a pure wurtzite crystalline structure. ZnO-based dye-sensitized solar cells were fabricated with customized microfluidic architecture. Dye loading on the oxide surface was analyzed with ultraviolet-visible spectroscopy, and the dependence of the cell efficiency on sensitizer incubation time and film thickness was studied by current-voltage electrical characteriza- tion, incident photon-to-electron conversion efficiency, and impedance spectroscopy measurements, showing the promising properties of this material for the fabrication of dye-sensitized solar cell photoanodes with a solar conversion efficiency up to 4.58%.

Coral-shaped ZnO nanostructures for Dye Sensitized Solar Cell photoanodes / Lamberti, Andrea; Gazia, Rossana; Sacco, Adriano; Bianco, Stefano; Quaglio, Marzia; Chiodoni, Angelica; Tresso, Elena Maria; Pirri, Candido. - In: PROGRESS IN PHOTOVOLTAICS. - ISSN 1062-7995. - ELETTRONICO. - 22:(2014), pp. 189-197. [10.1002/pip.2251]

Coral-shaped ZnO nanostructures for Dye Sensitized Solar Cell photoanodes

LAMBERTI, ANDREA;GAZIA, ROSSANA;SACCO, ADRIANO;BIANCO, STEFANO;QUAGLIO, Marzia;CHIODONI, ANGELICA;TRESSO, Elena Maria;PIRRI, Candido
2014

Abstract

A highly efficient ZnO photoanode for dye-sensitized solar cells was successfully grown by a simple, low cost, and scalable method. A nanostructured coral-shaped Zn layer was deposited by sputtering onto fluorine-doped tin oxide/glass slices at room temperature and then thermally oxidized in ambient atmosphere. Stoichiometry, crystalline phase, quality, and morphology of the film were investigated, evidencing the formation of a highly porous branched nanostructure, with a pure wurtzite crystalline structure. ZnO-based dye-sensitized solar cells were fabricated with customized microfluidic architecture. Dye loading on the oxide surface was analyzed with ultraviolet-visible spectroscopy, and the dependence of the cell efficiency on sensitizer incubation time and film thickness was studied by current-voltage electrical characteriza- tion, incident photon-to-electron conversion efficiency, and impedance spectroscopy measurements, showing the promising properties of this material for the fabrication of dye-sensitized solar cell photoanodes with a solar conversion efficiency up to 4.58%.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11583/2501959
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