electrical and optical properties of tio2 anatase thin films pdf

Electrical And Optical Properties Of Tio2 Anatase Thin Films Pdf

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Published: 30.05.2021

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Applied Optics

Titanium dioxide TiO 2 films were deposited on Si and glass slides by reactive DC magnetron sputtering method. The effect of the total pressure, in the range of 3. The hydrophilic property was evaluated from contact angle after UV illumination. The results revealed that the structure and hydrophilicity were influence by total pressure. The as-deposited films were transparent and had high transmittance in visible regions. The thin film was titanium dioxide with the mixed phase of rutile and anatase structure.

Abstract The Cu2O thin film was deposited onto spin coated TiO2 thin layer by electro-deposition method. The crystallographic structure of the thin film was studied by X-ray diffraction XRD. XRD measurement showed that the film was crystallized in the cubical phase and the average crystallite size was found to be The grain size of the thin film was studied by scanning electron microscope SEM. Optical properties such as refractive index n and extinction coefficient k were determined from transmittance spectrum with SHIMADZU UV- spectrophotometer by using envelope method.

Yaser M. Box , Safat , Kuwait. Titanium dioxide thin films were deposited on crystalline silicon substrates by electron beam physical vapor deposition. Samples were then annealed at high temperatures ranging from C to C for 4 hours under nitrogen, and their structural and optical properties along with their chemical structure were characterized before and after annealing. The chemical and structural characterization revealed a substoichiometric film with oxygen vacancies, voids, and an interface oxide layer. It was found from X-ray diffraction that the deposited films were amorphous and crystallization to anatase phase occurred for annealed samples and was more pronounced for annealing temperatures above C. The refractive index obtained through spectroscopic ellipsometry ranged between 2.

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Thank you for visiting nature. You are using a browser version with limited support for CSS. To obtain the best experience, we recommend you use a more up to date browser or turn off compatibility mode in Internet Explorer. In the meantime, to ensure continued support, we are displaying the site without styles and JavaScript. A visible light active Bi 0. X-ray diffraction analysis affirms that TiO 2 and Bi 0. Moreover, the pure film exhibits diamagnetism, whereas the composite films have both large ferromagnetic and small diamagnetic components.

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When the films were annealed the phase transformed to single anatase phase of the TiO 2 films. The energy band gap value was found to change with annealing temperature. An enhancement of luminescence intensity is found due to change in the crystalline environment and reduction in oxygen amount with temperature. This is a preview of subscription content, access via your institution. Rent this article via DeepDyve.

The X-ray diffraction XRD analysis was used to examine the structure and to determine the crystallite size of TiO 2 thin film. Optical constants such as band gap, refractive index, extinction coefficient and electric susceptibility were determined. The dielectric properties of TiO 2 thin films were studied for different frequencies and different temperatures. The AC electrical conductivity test revealed that the conduction depended both on the frequency and the temperature. Photoconductivity study was carried out in order to ascertain the positive photoconductivity of the TiO 2 thin films.

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In this paper, we investigate the properties of anatase thin films in comparison to rutile thin films, by Raman spectroscopy, resistivity, Hall-effect, optical absorption,​.


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