resumo
Fabrication of anatase TiO(2) porous films at low temperature was achieved by a very simple, straightforward and cheap method involving the connection of oxide particles by UV-irradiation in air. The novelty of the method relies on the direct UV-irradiation of oxide nanoparticles, Without the presence of any oxide precursor or any additional treatment to form the nanoparticulate film. As electrodes for dye solar cells (DSCs), the 1-3 mu m-thick films modified with Dyesol N3 dye showed high photovoltaic responses, a maximum overall energy conversion efficiency of 2.4-2.5% being measured under AM1.5 illumination at 100 and 140 mW cm(-2). This method was extended to other semi-conducting oxides such as SnO(2). Efficiencies as high as 1.8% and 1.5% were measured under AM1.5 illumination at 64 and 140 mW cm(-2), respectively. This approach draws new prospects in the field of plastic organic-inorganic hybrid devices. (C) 2009 Elsevier B.V. All rights reserved.
palavras-chave
EMPLOYING NANOCRYSTALLINE TIO2; MESOPOROUS TIO2; PHOTOINDUCED HYDROPHILICITY; ANATASE TIO2; ELECTRODES; NANOPARTICLES; LIGHT; PERFORMANCE; CONVERSION; PHOTOCATALYSTS
categoria
Chemistry
autores
Tebby, Z; Babot, O; Michau, D; Hirsch, L; Carlos, L; Toupance, T
nossos autores
Luís António Ferreira Martins Dias Carlos
Professor Catedráticoagradecimentos
Mrs Elisabeth Sellier (University of Bordeaux 1), Rute A.S. Ferreira and M.M. Peres (Universidade de Aveiro) are acknowledged for their precious assistance. The authors wish to thank the CNRS, the Aquitaine Region (ZT PhD fellowship), the