Characterization of TiO2 thin films prepared by sol-gel processing

Date

2004-01-01

Author

Özenbaş, Ahmet Macit

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

196
views

0
downloads

In this work, TiO2 thin films were prepared by using sol-gel processing on soda-lime glass and silicon substrates. Precursor solutions for TiO2 films were prepared by using the proper amounts of titaniumtetraisopropoxide, diethanolamine and ethanol. The thickness of the TiO2 films was adjusted by repeating the spin coating cycle before the final heat treatment. Finally, various amounts of polyethylene glycol (PEG) were added to the above solution to observe its effect on the film morphology. The electrical characteristics were determined by using C-V measurements and respective dielectric constants were calculated. Results indicate that capacitance and the dielectric constant values of TiO2 films were comparable with the literature results and for 2.7 μm film thickness, dielectric constant was 24.

Subject Keywords

Photocatalysis, TiO2 thin films, Sol-gel processing

URI

https://hdl.handle.net/11511/62646
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=8644282087&origin=inward

Journal

EURO CERAMICS VIII, PTS 1-3

Collections

Department of Metallurgical and Materials Engineering, Article

Suggestions

OpenMETU
Core

Characterization of TiO2 thin films prepared by sol-gel processing Özenbaş, Ahmet Macit (2004-01-01) In this work, TiO2 thin films were prepared by using sol-gel processing on soda-lime glass and silicon substrates. Precursor solutions for TiO2 films were prepared by using the proper amounts of titaniumtetraisopropoxide, diethanolamine and ethanol. The thickness of the TiO2 films was adjusted by repeating the spin coating cycle before the final heat treatment. Finally, various amounts of polyethylene glycol (PEG) were added to the above solution to observe its effect on the film morphology. The electrical ...
Characterization and preparation of thin films and homogeneously precipitated Pb(Zr,Ti)O3 powders Homojen olarak çökelti̇lmi̇ş Pb(Zr,Ti)O3 tozlarin ve i̇nce fi̇lmleri̇n hazirlanmasi ve karakteri̇zasyonu Özenbaş, Ahmet Macit (1999-12-01) In this study, ferroelectric Pb(Zr,Ti)O3 powders and thin films were prepared from metal chlorides using sol-gel processing method. For powders; homogeneous precipitation from aqueous solution and for films; dip coating just before precipitation was applied in the presence of urea, [(NH2)2CO]. Characterization of the films and powders were carried out primarily by XRD and SEM/EDX. Both the films and powders were stoichiometric and completely crystallized into perovskite phase after annealing for 5 hours at ...
Characterization of maghemite thin films prepared by sol-gel processing Karakuşçu, Aylin; Özenbaş, Ahmet Macit; Department of Metallurgical and Materials Engineering (2006) In this study, maghemite (γ-Fe2O3) thin films were prepared by chemical solution deposition on glass and quartz substrates. The solution was prepared by using 0.3 M iron (III) nitrate [Fe(NO3)3 - 9H2O] as precursor and dissolved in a mixture of 2-methoxyethanol and acetylacetone in a molar ratio of 20:2, by stirring the solution at RT for 2 hours. Substrates were prepared by either piranha etching method or ultrasonic cleaning method. The solution was spin coated on glass and quartz substrates at 1400 and 4...
Preparation of lead free BZT-BCT thin films by chemical solution deposition and their characterization Çeltikçi, Barış; Özenbaş, Ahmet Macit; Department of Metallurgical and Materials Engineering (2012) In the presented thesis, lead-free Ba(Ti0.8Zr0.2)O3-(Ba0.7Ca0.3)TiO3 (BZT-BCT) thin films were deposited on Pt/TiO2/SiO2/Si substrates using chemical solution deposition method and then the effect of process parameters were investigated to obtain optimum parameters of these lead-free thin films. The phase was selected near to the morphotropic phase boundary (MPH) to increase the number of polarization directions where rhombohedral and tetragonal phases exist together. In this study, the effect of sintering ...
Synthesis of CNT-titania-silica nanocomposite thin films: the effect of heat treatment on photocatalytic activity Kırbaş, Tuğçe; Doğu, Timur; Department of Chemical Engineering (2014) In this study, CNT-TiO2-SiO2 nanocomposites were synthesized by sol-gel process and the thin films over glass substrates were fabricated by dip coating method. The effects of CNT addition, heat treatment temperature and atmospheres on the structure and photocatalytic properties were examined. The thin films were prepared with and without carbon nanotubes and the heat treatment was carried out at different temperatures in the range of 300-600oC under air and nitrogen atmosphere. Characterization of the sampl...

Citation Formats

A. M. Özenbaş, “Characterization of TiO2 thin films prepared by sol-gel processing,” EURO CERAMICS VIII, PTS 1-3, pp. 505–508, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/62646.