2019-11-17T03:13:33Z http://digital.csic.es/dspace-oai/request
oai:digital.csic.es:10261/51016 2018-07-17T10:29:14Z com_10261_10252 com_10261_3 com_10261_35 com_10261_5 col_10261_10253 col_10261_288
2012-06-07T08:56:37Z urn:hdl:10261/51016 Hydrothermal synthesis of 1D TiO2 nanostructures for dye sensitized solar cells Tacchini, Ignacio Ansón Casaos, Alejandro Yu, Youhai Martínez Fernández de Landa, María Teresa Lira-Cantú, Mónica Gobierno de Aragón La Caixa Ministerio de Ciencia e Innovación (España) Consejo Superior de Investigaciones Científicas (España) Generalitat de Catalunya El pdf del artículo es la versión pre-print. Mono-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. 2012-06-07T08:56:37Z 2012-06-07T08:56:37Z 2012 2012-06-07T08:56:38Z artículo Materials Science and Engineering: B 177(1): 19-26 (2012) http://hdl.handle.net/10261/51016 10.1016/j.mseb.2011.09.024 http://dx.doi.org/10.13039/501100004837 http://dx.doi.org/10.13039/501100003339 http://dx.doi.org/10.13039/501100002809 eng http://dx.doi.org/10.1016/j.mseb.2011.09.024 openAccess Elsevier