Preparation and Properties of Rare Earth-Doped TiO2 Thin Films by Sol-Gel Process

Tao Bai; Shi Gen Zhu

doi:10.4028/www.scientific.net/AMR.1033-1034.1235

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1033-1034Preparation and Properties of Rare Earth-Doped...

Preparation and Properties of Rare Earth-Doped TiO₂ Thin Films by Sol-Gel Process

Abstract:

Rare earth doped titaniumdioxide (TiO₂) thin films (rare earth-doped TiO₂) have been successfully prepared on a glass substrate by a sol–gel route. After the rare earth-doped TiO₂ thin films were calcined at 773K for 1h, the effect of rare earth-doping on the properties were investigated using X-ray diffraction (XRD), scanning electronmicroscopy (SEM), ultraviolet–visible spectroscopy and thermogravimetric techniques (TG/DTG). The XRD results showed that rare earth-doped TiO₂ thin films contained only a single crystalline phase of anatase TiO₂ after calcining at 773K for 1h. SEM micrographs showed that rare earth-doped TiO₂ thin films have smooth surfaces containing granular nanocrystallines and are without cracks. The UV–vis absorption spectra showed that the absorption of the rare earth-doped TiO₂ thin films has a red-shift. From ambient to 1273K, it is about 12% of mass loss because of the volatilizing of water and organic and the phase transformation.

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Periodical:

Advanced Materials Research (Volumes 1033-1034)

Pages:

1235-1238

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1033-1034.1235

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Online since:

October 2014

Authors:

Tao Bai*, Shi Gen Zhu

Keywords:

Film, Rare Earth, Sol-Gel, TiO₂

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