Easily manufactured TiO2 hollow fibers for quantum dot sensitized solar cells
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Other documents of the author: Samadpour, Mahmoud; Gimenez, Sixto; Zad, Azam Iraji; Taghavinia, Nima; Mora-Sero, Ivan
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comunitat-uji-handle2:10234/2507
comunitat-uji-handle3:10234/6973
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Title
Easily manufactured TiO2 hollow fibers for quantum dot sensitized solar cellsDate
2011Publisher
Royal Society of ChemistryISSN
1463-9076; 1463-9084Type
info:eu-repo/semantics/articlePublisher version
http://pubs.rsc.org/en/content/articlepdf/2012/cp/c1cp22619cVersion
info:eu-repo/semantics/acceptedVersionAbstract
TiO2
hollow fibers with high surface area were manufactured by a simple synthesis method, using
natural cellulose fibers as template. The effective light scattering properties of the hollow fibers,
originating from ... [+]
TiO2
hollow fibers with high surface area were manufactured by a simple synthesis method, using
natural cellulose fibers as template. The effective light scattering properties of the hollow fibers,
originating from their micron size, were observed by diffuse reflectance spectroscopy. In spite of
the micrometric length of the TiO2
hollow fibers, the walls were highly porous and high surface
area (78.2 m2
g
1
) was obtained by the BET method. TiO2
hollow fibers alone and mixed with
other TiO2
pastes were sensitized with CdSe quantum dots (QDs) by Successive Ionic Layer
Adsorption and Reaction (SILAR) and integrated as a photoanode in quantum dot sensitized
solar cells (QDSCs). High power conversion efficiency was obtained, 3.24% (Voc = 503 mV,
Jsc = 11.92 mA cm 2
, FF = 0.54), and a clear correspondence of the cell performance with
the photoanode structure was observed. The unique properties of these fibers: high surface
area, effective light scattering, hollow structure to facile electrolyte diffusion and the rather
high efficiencies obtained here suggest that hollow fibers can be introduced as promising
nanostructures to make highly efficient quantum dot sensitized solar cells. [-]
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Phys. Chem. Chem. Phys., 2012,14Rights
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