Now showing items 1-5 of 5
Characterization of metallic electrical contacts to SnO2 thin films lightly doped with Eu3+ ions, and photo-induced resistivity
(Materials Chemistry and Physics, 2012-06-15) [Artigo]
Lightly Eu3+-doped (0.05%) SnO2 thin films are deposited by the sol-gel-dip-coating technique, topped by alternative metallic layers of Al, Sn or In, arranged in a parallel layout on the thin film surface, and deposited ...
Effect of pH of colloidal suspension on crystallization and activation energy of deep levels in SnO2 thin films obtained via sol-gel
(Journal of Physics and Chemistry of Solids, 2009-09-01) [Artigo]
Colloidal suspensions of tin dioxide (SnO2) are prepared by the sol-gel method from suspensions with distinct pHs. The particles in solution are embedded by an electrical layer. Decreasing the pH contributes to the destruction ...
Light-induced electric dipole relaxation in synthetic and natural alexandrite
(Radiation Effects and Defects in Solids, 2002-12-01) [Artigo]
We present results of thermally stimulated depolarization current (TSDC) measurements in synthetic and natural alexandrite, which show TSDC bands related to the presence of electric dipoles in both types of samples. Synthetic ...
Investigation of photoinduced electrical properties in the heterojunction TiO2/SnO2
(Electroceramics Vi, 2014-01-01) [Trabalho apresentado em evento]
TiO2/SnO2 thin films heterostructures were grown by the sol-gel dip-coating technique. It was found that the crystalline structure of TiO2 depends on the annealing temperature and the substrate type. TiO2 films deposited ...
Schottky emission in nanoscopically crystallized Ce-doped SnO2 thin films deposited by sol-gel-dip-coating
(Thin Solid Films, 2008-11-28) [Artigo]
This paper reports the electrical effects of the incorporation of Ce(III) or Ce(IV) in SnO2 thin films, prepared by the sol-gel-dip-coating technique. This doping has drastically increased the resistivity compared to undoped ...