TY - JOUR
T1 - New low-temperature preparation method of the TiO2 porous photoelectrode for dye-sensitized solar cells using UV irradiation
AU - Gutiérrez-Tauste, David
AU - Zumeta, Inti
AU - Vigil, Elena
AU - Hernández-Fenollosa, Maria Angeles
AU - Domènech, Xavier
AU - Ayllón, José A.
N1 - Funding Information:
This work has been financed by the Spanish National Plan of Research (BQU2003-01280 project). Part of the work was conducted thanks to the grant of the Spanish Secretaría de Estado de Educación y Universidades to E. Vigil (SAB2002-0081).
PY - 2005/10/31
Y1 - 2005/10/31
N2 - Thick porous TiO2 films have been prepared at low temperature from a mixture of a commercial TiO2 powder (Degussa P25) and an easy-to-handle water-soluble titania precursor: titanium(IV) bis(ammonium lactato)dihydroxide. Films have been obtained spreading the mixture using "doctor blade" technique. UV light treatment using a medium-pressure mercury vapor lamp leads to decomposition of the titania precursor as a result of the photocatalytic activity of nanocrystalline TiO2 present in the blend. The additional titanium oxide thus formed assures both, necking between particles and film adhesion to the substrate. Porous nano-structured TiO2 films were fabricated by this low-temperature method (always lower than 80 °C) on transparent conducting oxide-covered glass and flexible plastic substrates (indium-tin-oxide on glass and on PET, and fluorine-doped tin oxide on glass). The photoelectrodes obtained by this method have been characterized by scanning electron microscopy, attenuated total reflection Fourier transform infrared spectroscopy, photoluminiscence, monochromatic incident photon-to-current conversion efficiency (IPCE) and I-V measurements. Results obtained with dye-sensitized solar cells (DSSC) built with these films are promising.
AB - Thick porous TiO2 films have been prepared at low temperature from a mixture of a commercial TiO2 powder (Degussa P25) and an easy-to-handle water-soluble titania precursor: titanium(IV) bis(ammonium lactato)dihydroxide. Films have been obtained spreading the mixture using "doctor blade" technique. UV light treatment using a medium-pressure mercury vapor lamp leads to decomposition of the titania precursor as a result of the photocatalytic activity of nanocrystalline TiO2 present in the blend. The additional titanium oxide thus formed assures both, necking between particles and film adhesion to the substrate. Porous nano-structured TiO2 films were fabricated by this low-temperature method (always lower than 80 °C) on transparent conducting oxide-covered glass and flexible plastic substrates (indium-tin-oxide on glass and on PET, and fluorine-doped tin oxide on glass). The photoelectrodes obtained by this method have been characterized by scanning electron microscopy, attenuated total reflection Fourier transform infrared spectroscopy, photoluminiscence, monochromatic incident photon-to-current conversion efficiency (IPCE) and I-V measurements. Results obtained with dye-sensitized solar cells (DSSC) built with these films are promising.
KW - Dye-sensitized solar cells
KW - Low-temperature film preparation
KW - Photocatalysis
KW - Titanium oxide
UR - http://www.scopus.com/inward/record.url?scp=28144443996&partnerID=8YFLogxK
U2 - 10.1016/j.jphotochem.2005.04.031
DO - 10.1016/j.jphotochem.2005.04.031
M3 - Artículo
SN - 1010-6030
VL - 175
SP - 165
EP - 171
JO - Journal of Photochemistry and Photobiology A: Chemistry
JF - Journal of Photochemistry and Photobiology A: Chemistry
IS - 2-3
ER -