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Reversible metallization of SnO2 films under hydrogen and oxygen containing atmospheres
(Springer, 2016-02-01)
The adsorption of different gases onto tin oxide films surfaces promotes electrical conductance variations. Films chemiresistive properties depend on the intergranular barrier heights and on the concentration of ...
Densification of Mn-doped tin oxide films by conventional heating and microwave heating treatment
(2005-12-01)
Mn(II) doped SnO2 thin films used for shielding fluoride glasses against corrosion were investigated by x-ray absorption spectroscopy (EXAFS and XANE)S at the Sn and Mn K-edges. The effect of firing treatment on the ...
Enhancement of surface properties of solgel tin dioxide thin films with addition of surfactant in the precursor solution
(2021-07-01)
The use of the Triton X-100 nonionic surfactant in the precursor solution has revealed a fundamental increase on the surface area, which is very relevant for applications as gas sensors and in photocatalysis. Besides, this ...
Synthesis and characterization of nanostructured TiO<sub>2</sub>-SnO<sub>2</sub> composite
(2014)
Nanostructured composites based on titanium dioxide have been studied in order to improve optical and photo-catalytic properties, as well as their performance in gas sensors. In this work, titanium and tin dioxides were ...
MnO2 influence on the electrical properties of SnO2-based ceramic systems
(2001-01-01)
Tin dioxide is an n-type semiconductor that when doped with other metallic oxides exhibits non-linear electric behavior with high non-linear coefficient values typical of a varistor. In this work, electrical properties of ...
WO3 and ZnO-doped SnO2 ceramics as insulating material
(Elsevier B.V., 2006-01-01)
SnO2 ceramics doped with ZnO and WO3 were prepared by mixed oxide method. The effect of ZnO and WO3 additives could be explained by the substitution of Sn4+ by Zn2+ and W6+. The addition of WO3 inhibits the grain growth ...
Ultraviolet excitation of photoconductivity in thin films of sol-gel SnO2
(Elsevier B.V., 2005-01-01)
Tin dioxide (SnO2) thin film photoconductivity spectra were measured for a large temperature range using a deuterium source, the intensity of photocurrent spectra in the range 200-400 nm is temperature dependent, and the ...
Dependence of the nonlinear electrical behavior of SnO2-based varistors on Cr2O3 addition
(Elsevier B.V., 2007-01-01)
Tin dioxide varistors doped with Coo, ZnO, Ta2O5 and Cr2O3 were prepared by the mixed oxide method. Temperature dependent impedance spectroscopy revealed two different activation energies, one at low frequencies and the ...
Growth kinetics of tin oxide nanocrystals in colloidal suspensions under hydrothermal conditions
(Elsevier B.V., 2006-09-29)
Colloidal suspensions of tin oxide nanocrystals were synthesized at room temperature by the hydrolysis reaction of tin chloride (II), in an ethanolic solution. The coarsening kinetics of such nanocrystals was studied by ...
Effect of powder milling and dopant addition on the current-voltage characteristics of SnO2-based ceramics
(2001-01-01)
Non-linear electrical properties of SnO2-based ceramics were investigated as a function of powder agglomeration condition and as a function of dopant addition. All doped powders presented a single phase, cassiterite, as ...