Optoelectronics properties of TiO2:Cu thin films obtained by sol gel method

[EN] In this research, Cu-doped TiO2 thin films have been successfully deposited onto a glass substrate by Sol¿gel technique using dip coating method. The films were annealed at different annealing temperatures (400¿500 "C) for 1 h. The structural, optical and electrical properties of the films were investigated and compared using X-ray Diffraction,UV¿visible spectrophotometer and 4-point probe method. Optical analysis by mean transmittance T(k) and absorption A(k) measurements in the wavelength range between 300 to 800 nm allow us to determine the indirect band gap energy. DRX analysis of our thin films of TiO2:Cu shows that the intensities of the line characteristic of anatase phase increasing in function of the temperature.This work has been partially supported by LGOPS Laboratory University Polytechnic University of Valencia, Spain and LMOPS Laboratory University of Lorraine France. Technical support from LMOPS and LGOPS labs is gratefully acknowledged.Essalhi, Z.; Hartiti, B.; Lfakir, A.; Marí, B.; Thevenin, P. (2017). Optoelectronics properties of TiO2:Cu thin films obtained by sol gel method. Optical and Quantum Electronics. 49(9). doi:10.1007/s11082-017-1142-0S301499Balasingh, C., Abuhasan, A.: Diffraction peak broadening studies in Al2O3 (Whisker) composites. Powder Diffr. 6(1), 16–19 (1991)Chakrabarty, B.S.: Evaluation of optical constants of wide band gap cadmium doped polypyrrole. Impact IJRET 2(3), 37–44 (2014)Cullity, B.D.: Elements of X-ray Diffraction. Addison-Wesley Publishing Company, Reading (1978)Dhanapandian, S., Arunachalam, A.: Effect of deposition parameters on the properties of TiO2 thin films prepared by spray pyrolysis. J. Sol Gel Sci. Technol. 77, 119–135 (2016)Elkhalidi, Z., et al.: Behavior of NiO thin films sprayed at different annealing time. Opt. Quantum Electron. 48, 427 (2016)El-Korashy, A., et al.: Optical studies of (NH4)2SO4 single crystal in the paraelectric phase. J. Phys. Chem. Solids 64, 2141–2146 (2003)Huang, M., Yu, S., Li, B.: Influence of preparation methods on the structure and catalytic performance of SnO2-doped TiO2 photocatalysts. Ceram. Int. 40, 13305–13312 (2014)Jayasinghe, R.C., Perera, A.G.U.: Optical properties of nanostructured TiO2 thin films and their application as antireflection coatings on infrared detectors. Opt. Lett. 37(20), 4302–4304 (2012)Kingery, W.D., Bowen, H.K., Uhlmann, D.R.: Introduction to Ceramic, p. 457. Wiley, New York (1976)Li, C.P., Wang, J.F., Su, W.B.: Effect of sinter temperature on the electrical properties of TiO2 based capacitor-varistors. Mater. Lett. 57, 1400–1405 (2003)Luis, A.M., et al.: Influence of calcination parameters on The TiO2 photocatalytic properties. Mater. Chem. Phys. 125, 20–25 (2011)Lyson-Sypien, B., Czapla, A., Lubecka, M.: Gas sensing properties of TiO2–SnO2 nanomaterials. Sens. Actuators B 187, 445–454 (2013)Michael, G.: Sol–gel processed TiO2 films for photovoltaic applications. J. Sol Gel. Sci. Technol. 22, 7–13 (2001)Ogawa, H., Higuchi, T.: Growth of TiO2 thin film by reactive RF magnetron sputtering using oxygen radical. J. Alloys Compd. 449(1–2), 375–378 (2008)Tachibana, Y., Ohsaki, H., Hayashi, A.: TiO2–X sputter for high rate deposition of TiO2. Vacuum 59, 836–843 (2000)Tian, L., Soum-Claude, A.: Undoped TiO2 and nitrogen-doped TiO2 thin films deposited by atomic layers deposition on planar and architecture surfaces for photovoltaic applications. Vac. Surf. Films 33, 01A141 (2015)Urbach, F.: The long-wavelength edge of photographic sensitivity and of the electronic absorption of solids. Phys. Rev. 92, 1324 (1953)Wang, X., Zhang, D.: A novel sol–gel method for preparing favorable TiO2 thin films. Mater. Res. Express 3, 016401 (2016)Wang, W.B., Yanguas-Gil, A., Yang, Y.: Chemical vapor deposition of TiO2 thin films from a new halogen-free precursor. J. Vac. Sci. Technol. A 32, 061502 (2014)Yakuphanoglu, F., et al.: The determination of the optical constants of Cu (II) compound having 1-chloro-2, 3-o-cyclohexylidinepropane thin film. Opt. Commun. 239, 275–280 (2004)Yoldas, B.E., Partlow, P.W.: Formation of broad band antireflective coatings on fused silica for high power laser applications. Thin Solid Films 129(1–2), 1–14 (1985

Optical properties of TiO2 Thin films prepared by Sol Gel method

International audienceTitanium dioxide is currently the focus of intensive research because of their interesting chemical, electrical and optical properties. In this work, TiO2 thin films were prepared by sol gel method, and have been deposited by spin coating technique onto glass substrates (3 - TiO2/glass). In this work, we report the effect of the spin speed (2900, 3200 and 4900 rpm) on different optical properties of the films. The samples were characterized by means of Raman spectroscopy, hall measurement and UV-Visible spectrophotometer. The transmission spectra of titanium dioxide thin films indicate that there are two parts, the first is transparent in the visible wavelength spectrum region and the second is opaque in the UV ranges. We found that the transmission curves and the calculated optical band gap increase when thespin speed increases. The Raman spectra have shown the Anatase phase

Structural and optical properties of TiO2SnO2 thin films prepared by sol gel method

International audienceTiO2SnO2 thin films were deposited on glass substrates, by using sol gel spin coating method with different ratio (3%, 5% and 7%) at 3200 rpm, to study their effect on different properties of TiO2 SnO2 thin films. The structural and optical properties of films have studied for different ratio. These deposited films have been characterized by various methods such as X-Ray Diffraction (XRD), Ultra Visible spectroscopy. The (XRD) can be used to identify crystal structure of as deposited films. The Transmission spectra have shown the transparent and opaque parts in the visible and UV wavelengths. ©2016 Taylor and Francis Group, LLC

Synthesis of doped and undoped TiO2 thin films prepared by sol gel

International audienceThe influence of doping level at 0%, 3%, 5% and 7% by tin dioxide on the optical and electrical properties of TiO2 thin film were deposited on glass substrates by sol gel technique dip coating method. © 2016 IEE

Elaboration and Characterization of SnO2 Doped TiO2 Gas Sensors Deposited through Dip and Spin Coating Methods

Semiconductor functional materials play an increasingly important role in science and technology because of their unique optical, electrical, magnetic, catalytic and chemical properties. They are widely used in fields such as solar cell, photo-catalysts, optical coating, capacitors for large scale integrated devices, electrochromic systems and gas sensors. One important application for semiconductor gas sensors is the detection of pollutant gases for the control of the combustion process