Structural, Optical and Electrical Properties of Titanium Dioxide Thin Films with Different Molarity

Abstract:

Titanium dioxide, TiO₂ is one of the semiconductor materials that can be produced in many ways, such as magnetron sputtering, CVD, and sol-gel process. This paper studied on the production of TiO₂ by sol-gel method using titanium tetra (IV) isopropoxide, TTiP. The solution of TiO₂ then deposited as a thin films onto glass substrate by spin-coating method. The purpose of this paper is to investigate the effect of molarity on the morphology, optical and electrical properties of the thin films. The effect on the morphology was observed by AFM. The electrical properties then observed by IV characteristic and finally on the optical properties were investigated by UV-Vis. The transmission obtained from UV-Vis showed that TiO₂ thin films are decreased around 18% at higher molarity in a visible region. The bandgap also decrease at high molarity. Higher molarity of TiO₂ in current-voltage characteristic gave a value of current density for 1.03×10-4 A/m2 and resistivity 1.95×107 Ωm.

• Periodical: Advanced Materials Research (Volume 667)
• Pages: 58-62
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.667.58
• Online since: March 2013
• Authors: S.K.M. Maarof, Saifollah Abdullah, Mohamad Rusop Mahmood
• Keywords: AFM, I-V Characteristics, Sol-Gel Method, Titanium Dioxide (TiO₂), UV-VIS

References

[1] A. Shanaghi, et al., Study Of Ti O2 Nanoparticle Coatings By The Sol-Gel Method For Corrosion Protection, Materials Science, 44 (2008) 15.

[2] Wei Wu, et al., Facile method to synthesize magnetic iron oxides/TiO2 hybrid nanoparticles and their photodegradation application of methylene blue, Nanoscale Research Letters, 6 (2011) 15.

DOI: 10.1186/1556-276x-6-533

[3] Akira Fujishima, Tata N. Rao, D.A. Tryk, Titanium dioxide photocatalysis, Journal of Photochemistry and Photobiology 1 (2000) 21.

DOI: 10.1016/s1389-5567(00)00002-2

[4] Asiah, M.N., et al., Titanium Dioxide Thin Films: Effect of Annealed in Oxygen ambient, Advanced Materials Research, 364 (2012) 5.

DOI: 10.4028/www.scientific.net/amr.364.12

[5] Park, S., J. Heo, Characteristics of N-doped titanium oxide prepared by the large scaled DC reactive magnetron sputtering technique, Separation and Purification Technology, 58 (2007) 200-205.

DOI: 10.1016/j.seppur.2007.07.033

[6] Khakpash, N., A. Simchi, and T. Jafari, Adsorption and solar light activity of transition-metal doped TiO2 nanoparticles as semiconductor photocatalyst, Journal of Materials Science: Materials in Electronics, 23 (2011) 659-667.

DOI: 10.1007/s10854-011-0466-y

[7] Vishwas, M., et al., Optical, electrical and dielectric properties of TiO2–SiO2 films prepared by a cost effective sol–gel process, Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 83 (2011) 4.

DOI: 10.1016/j.saa.2011.08.009

[8] A.Y. Orala, et al., The preparation of copper(II) oxide thin films and the study of their microstructures and optical properties, Materials Chemistry and Physics, 83 (2004) 5.

[9] P.S. Patil, S.H.M., A.I. Inamdar, P.S. Shinde, S.B.S. H.P. Deshmukh, Structural, electrical and optical properties of TiO2 doped WO3 thin film, Applied Surface Science 252 (2005) 8.

DOI: 10.1016/j.apsusc.2005.03.074

[10] A. Yildiz, et al., Electrical properties of TiO2 thin film, Journal of Non-Crystalline Solids, 354 (2008) 4.