Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1672227 | Thin Solid Films | 2009 | 5 Pages |
Abstract
Anatase TiO2 film was deposited on SnO2: F substrate in aqueous solution. The film had an assembly of acicular TiO2 nanocrystals on the surface. The crystals grew along the c-axis, i.e. perpendicular to the substrate. Dye adsorption increased with film thickness. Intensity of photoluminescence originating from the dye adsorbed on the nanostructured film after annealing was 3 times higher than that of thicker particulate film constructed of TiO2 nanoparticles (P25). Additionally, dye adsorption property of the film without annealing was two times higher than the film with annealing. Consequently, the as-deposited film had high dye adsorption property which is about 6 times higher that that of thicker particulate film constructed of TiO2 nanoparticles (P25). Assemblies of acicular crystals on the surface increased the surface area and amount of dye adsorption. The film may be useful for biomolecule sensors and dye-sensitized solar cells.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Yoshitake Masuda, Makoto Bekki, Shuji Sonezaki, Tatsuki Ohji, Kazumi Kato,