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Title

Hydrothermal synthesis of 1D TiO2 nanostructures for dye sensitized solar cells

AuthorsTacchini, Ignacio; Ansón Casaos, Alejandro ; Yu, Youhai ; Martínez Fernández de Landa, María Teresa; Lira-Cantú, Mónica
Issue Date2012
PublisherElsevier
CitationMaterials Science and Engineering: B 177(1): 19-26 (2012)
AbstractMono-dimensional titanium oxide nanostructures (multi-walled nanotubes and nanorods) were synthesized by the hydrothermal method and applied to the construction of dye sensitized solar cells (DSCs). First, nanotubes (TiNTs) and nanotubes loaded with titanium oxide nanoparticles (TiNT/NPs) were synthesized with specific surface areas of 253 m2/g and 304 m2/g, respectively. After that, thermal treatment of the nanotubes at 500 °C resulted in their transformation into the corresponding anatase nanorods (TiNT-Δ and TiNT/NPs-Δ samples). X-ray diffraction and Raman spectroscopy data indicated that titanium oxide in the pristine TiNT and TiNT/NP samples was converted into anatase phase TiO2 during the heating. Additionally, specific surface areas and water adsorption capacities decreased after the heat treatment due to the sample agglomeration and the collapse of the inner nanotube channels. DSCs were fabricated with the nanotube TiNT and TiNT/NP samples and with the anatase nanorod TiNT-Δ and TiNT/NPs-Δ samples as well. The highest power conversion efficiency of η = 3.12% was obtained for the TiNT sample, despite its lower specific surface compared with the corresponding nanoparticle-loaded sample (TiNT/NP). © 2011 Elsevier B.V. All rights reserved.
DescriptionEl pdf del artículo es la versión pre-print.
Publisher version (URL)http://dx.doi.org/10.1016/j.mseb.2011.09.024
URIhttp://hdl.handle.net/10261/51016
DOI10.1016/j.mseb.2011.09.024
Identifiersdoi: 10.1016/j.mseb.2011.09.024
issn: 0921-5107
Appears in Collections:(CIN2) Artículos
(ICB) Artículos
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