Correlation between dispersion properties of TiO2 colloidal sols and photoelectric characteristics of TiO2 films.
J Colloid Interface Sci
; 279(2): 479-83, 2004 Nov 15.
Article
em En
| MEDLINE
| ID: mdl-15464814
ABSTRACT
TiO2 film for use as dye-sensitized solar cell was prepared using the TiO2 colloidal sols (unpeptized sol and peptized sol). The optical properties and photocurrent-voltage characteristics of the resultant films were investigated. The optical transmittance of TiO2 thin film prepared from the peptized colloidal sol was over 90%, while that of TiO2 film from the unpeptized sol was under 80%. The TiO2 photoelectrode prepared from the peptized colloidal sol showed low photoelectric conversion efficiency (eta), 1.30%, whereas the efficiency of photoelectrode from the unpeptized sol was 2.21%. The high optical transmittance and low conversion efficiency of TiO2 film from the peptized sol are discussed in terms of dense microstructure due to the drying nature of well-dispersed colloidal sol.
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Base de dados:
MEDLINE
Assunto principal:
Titânio
/
Coloides
Idioma:
En
Revista:
J Colloid Interface Sci
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Coréia do Sul