Synthesis, Optical and Electrical Conductivity Characterization of Micro-thick Titanium Dioxide Thin Film Semiconductor

A.O. Ohiani¹ , K.M. Omatola² , A.S. Ayodele³ , J. Adeyemi⁴

1. Dept. of Physics, Faculty of Natural Sciences, Kogi State University, Anyigba, Kogi State, Nigeria.
2. Dept. of Physics, Faculty of Natural Sciences, Kogi State University, Anyigba, Kogi State, Nigeria.
3. Dept. of Physics, Faculty of Natural Sciences, Kogi State University, Anyigba, Kogi State, Nigeria.

Section:Research Paper, Product Type: Journal-Paper
Vol.9 , Issue.3 , pp.8-12, Dec-2022

Online published on Dec 31, 2022

Copyright © A.O. Ohiani, K.M. Omatola, A.S. Ayodele, J. Adeyemi . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

View this paper at   Google Scholar | DPI Digital Library

XML View     PDF Download

How to Cite this Paper

231 Views    265 Downloads    59 Downloads

Abstract :
The synthesis of micro-thick titanium dioxide thin film semiconducting material on indium-tin oxide substrate by spin-coating technique and the reliance of its optical transmittance, absorbance, band-gap and electrical conductivity on the film thickness have been investigated. The film thickness was determined with the aid of a surface profiler. The electrical conductivity was determined using a four point probe. An UV-VIS-NIR Spectrophotometer was employed to study the optical transmittance, absorbance and the band-gap energy of the titanium dioxide material. The study revealed a direct relationship between the electrical conductivity and the film thickness. The film transmittance was observed to vary inversely with film thickness and the film absorption coefficients while the band-gap of the film displayed a direct relationship with film thickness.

Key-Words / Index Term :
Micro-thick, TiO2 Thin film, Synthesis, Conductivity, Transmittance and Band-gap

References :
[1] M. I. Khan, K. A. Bhatti, R. Qindeel, H. S. Althobaiti, N. Alonizan, “Structural, Electrical and Optical Properties of Multilayer TiO2 Thin Films Deposited by Sol–gel Spin Coating”, Results in Physics, vol. 7, Issue. 4, pp. 1437–1439, 2017.
[2] S. Ito, T. N. Murakami, P. Comte, P. Liska, C. Gratzel, M. K. Nazeeruddin, and M. Gratzel, “Fabrication of thin film dye sensitized solar cells with solar to electric power conversion efficiency over 10%”, Thin Solid Films, Vol. 516, issue. 14, pp. 4613-4619, 2008.
[3] A. Ramadoss and S. J. Kim, “Vertically aligned TiO2 Nanorod Arrays for Electrochemical Super-capacitor”, Journal of Alloys Compounds, Vol. 561, pp. 262-267, 2013.
[4] D. Bhattacharyya, N. K. Sahoo, S. Thakur, and N. S. Das, “Spectroscopic Ellipsometry of TiO2 Layers Prepared by Ion-assisted Electron-beam Evaporation”, Thin Solid Films, Vol. 360, issue. 1-2, PP. 96-102, 2000.
[5] D. L. Domtau, J. Simiyu, E. O. Ayieta, B. Muthoka, and J. M. Mwabora, “Optical and Electrical Properties Dependence on Thickness of Screen-Printed TiO2 Thin Films”, Journal of Materials Physics and Chemistry, vol. 4, Issue. 1, pp. 1-3, 2016.
[6] Z. Ding, X. Hu, P. L. Yue, G. Q. Lu and P. F. Greenfield, “Synthesis of Anatase TiO2 Supported on Porous Solids by Chemical Vapor Deposition”, Catal Today, Vol. 68, Issue. 173, 2001.
[7] Q. Zhang and C. Li, “Pure Anatase Phase Titanium Dioxide Films Prepared by Mist Chemical Vapor Deposition”, Nanomaterials, Vol. 8, Issue. 10, pp. 827, 2018.
[8] G. Govindasamy, P. Murugasen and S. Sagadevan, “Investigations on the Synthesis, Optical and Electrical Properties of TiO2 Thin Films by Chemical Bath Deposition (CBD) method”, Materials Research, Vol. 19, Issue., 2, pp. 413-419, 2016.
[9] D. M. Hausmann and R. G. Gordon, “Surface Morphology and Crystallinity Control in the Atomic Layer Deposition (ALD) of Hafnium and Zirconium oxide”, Journal of Crystal Growth, Vol. 249, pp. 251–261, 2003.
[10] L. F. K. Pedrinia, L. C. Escaliante and L. V. A. Scalvi, “Deposition of TiO2 thin Films by Dip-Coating Technique from a Two-Phase Solution Method and Application to Photocatalysis”, Materials Research, Vol. 24, issue. 1, pp. 1-11, 2021.
[11] S. Takeda, S. Suzuki, H. Odaka, and H. Hosono, “Photocatalytic TiO2 thin film deposition onto glass by DC magnetron sputtering”, Thin Solid Films, Vol. 392, issue. 2, pp. 338-344, 2001.
[12] B. R. Weinberger and R. B. Garber, “Titanium-dioxide photocatalysts produced by reactive magnetron sputtering’’, Applied Physics Letters, Vol. 66, issue. 18, pp. 2409-2411, 1995.
[13] C. J. Brinkers, G. C. Frey, A. J. Hurd, and C. S. Ashly, “Fundamentals of sol-gel dip coating”, Thin Solid Films, Vol. 201, issue. 1, pp. 97-108, 1991.
[14] F. Zeribi, A. Attaf, Z. A. Derbali, H. Saidi, L. Benmebrouk, M. S. Aida, M. Dahnoun, R. Nouadji and H. Ezzaouia, “Dependence of the Physical Properties of Titanium Dioxide (TiO2) Thin Films Grown by Sol-Gel (Spin-Coating) Process on Thickness”, Journal of Solid State Science and Technology, Vol. 11, Issue. 2, pp. 30, 2022.
[15] Z. Wang and X. Hu., “Fabrication and electrochromic properties of spin-coated TiO2 thin films from peroxo-polytitanic acid”, Thin Solid Films, Vol. 352, issue. 2, pp. 62-65, 1999.
[16] K. Nagaveni, M. S. Hegde, N. Ravishankar, G. N. Subbanna, and G. Madras, “Synthesis and structure of nanocrystalline TiO2 with lower bandgap showing high photocatalytic activity”, Langmuir, Vol. 20, issue. 7, pp. 2900-7, 2004.
[17] J. Yu, X Zhao, J. Du and W. Chen, “Preparation, microstructure and photocatalytic activity of the porous TiO2 anatase coating by sol-gel processing”, Journal of Sol–Gel Science and Technology, Vol. 17, issue. 2, pp. 163-171, 2000.
[18] A. Yildiz, S. B. Lisesivdin, M. Kasap, D. Mardare, “Electrical Properties of TiO2 thin films’’, Journal of Non-Crystalline Solids, Vol. 354 pp. 4944–4947, 2008.