Document Type : Research Paper
Authors
Department of physics, College of Science, University of Anbar, Ramadi, Iraq
Abstract
In this work, the concentration effect of mixed tin dioxide and zinc oxide on optical properties of titanium dioxide thin films was studied. Thin films were prepared by using spray chemical pyrolysis technique on glass substrate at 350 ͦC. The optical results revealed a weak optical transmittance for Un-doped TiO2 at the end of ultraviolet spectrum followed by an increase, more than 48%, at the near IR spectrum. TiO2 thin films revealed more transparent with blue shift in the absorption edge when the SnO2-ZnO mixed increased. A significant decrease in the absorption coefficient with increasing the mixed of SnO2-ZnO. According to the results of the electronic transition of TiO2, thin films have direct and indirect energy gap, about 3.2 eV and 2.11 eV, respectively. An increase in both types of energy gap was observed with the mixing concentrations of SnO2-ZnO increase. In addition, a significant decrease also was in the refractive index and extinction coefficient with the increasing SnO2-ZnO concentration.
Keywords
Main Subjects
[1] Jamal, M. Rzaij., 2016 “Characterization of CuO thin films for gas sensing applications,” Iraqi J. Phys., vol. 14, no. 31, pp. 1–12.
[2] Thi,Ly. Le.,2016, ,,Preparation of transition metal oxide thin films used as solar absorbers materials, ,, Universite paul Sabatier– Toulouse III, English.
[3] Anderson.J.,and Chris .G .Van de .Walle.,2009," Fundamentals of Zinc Oxide As a Semiconductor,” Materials Department, University of California, Santa Barbara, Rep. Prog. Phys.,Vol. 7, no. 2, PP. 29.
[4] Ibraheam.A. S., Jamal.M. Rzaij., and Fakhri.M. A., 2019,“Structural, optical and electrical investigations of Al:ZnO nanostructures as UV photodetector synthesized by spray pyrolysis technique,” Mater. Res. Express, vol. 6, no. 5.
[5] Asahi.R., and Taga.Y., Wolfgang. Mannstadt, and Freeman.A. J.,2000," Electronic and Optical Properties of Anatase TiO2,” Phys. review. B, Condensed matter, Vol. 61, no. 11.
[6] Gultekin Gulsen, and M. Naci. Inci,2002,"Thermal optical properties of TiO2 films,” Opt. Mater, Vol. 18, no.4, PP. 373-381.
[7] Mistrik .J., Kasap .S., Ruda.H. E., Koughia C., and Singh J.,2017, ,,Optical Properties of Electronic Materials: Fundamentals and Characterization BT- Springer Handbook of Electronic and Photonic Materials,,, Eds. Cham: Springer International Publishing, p. 1.
[8] Bakr A.,2016, “Effect of Fluorine Doping on Structural and Optical Properties of SnO2 Thin Films Prepared by Chemical Spray Pyrolysis Method,” Adv. Mater., vol. 5, no. 4, pp. 175–182.
[9] Baco. S., Chik.A., and Yassin.F. Md.,2012, “Study on Optical Properties of Tin Oxide Thin Film at Different Annealing Temperature,” J. Sci. Technol., vol. 4, no. 1, pp. 61–71.
[10] Al-Saadi .T. M., Hussein .B. H., Hasan.A. B., and Shehab A. A., 2019, “Study the Structural and Optical Properties of Cr doped SnO2 Nanoparticles Synthesized by Sol-Gel Method,” Energy Procedia, vol. 157, pp. 457–465.
[11] Hussain. N., Zulfiqar.S., Khan.T., Khan.R.,Khattak.SA., Ali.S., and Khan.G., 2020 “Investigation of structural, optical, dielectric and magnetic properties of SnO2 nanorods and nanospheres,” Mater. Chem. Phys., vol. 241, p. 122382.
[12] Ali.S. M., Hussain.S. T., Bakar.S. A., Muhammad.J., and Rehman ..N. U.,2103 “Effect of doping on the Structural and Optical Properties of SnO2 Thin Films fabricated by Aerosol Assisted Chemical Vapor Deposition,” J. Phys. Conf. Ser., vol. 439, no. 1.
[13] Janitabar .D. S., R.Mahjoub. A., and Bayat. A.,2016," Synthesis and characterization of visible light active S-doped TiO2 Nanophotocatalyst," Int. J. Nano Dimens., Vol. 7, no. 1, PP: 33-40.
[14] Konan.F.K.,Hartiti. B.,Tchognia Nkuissi.H. J.,and Boko.A.,2019," Optical-structural characteristics of i-ZnO thin films deposited by chemical route,” J. Mater. Environ. Sci., Vol. 10, no.10, PP. 1003-1010.
[15] Arwaa.F. Saleh, Batool. D. Balawa and Areej.A. Hateef,2010," Effect of the Thickness on the Optical Properties of (TiO2) Thin Films,” Al- Mustansiriya J. Sci, Vol. 21, No 4.
[16] Nihad.A., Alsiddig.T. Kaffi, Abdalskhi.S.M.H and Sawsan.A. E. Ahmed,2019," The Effect of Silver Doping on Optical Properties of TiO2," IOSR Journal of Applied Physics, Vol. 11, No. 5, PP. 14-19.
[17] Essalhi.Z., Hartiti.B., Lfakir.A., Siadat.M., and Thevenin..P.,2016, “Optical properties of TiO2 Thin films prepared by Sol Gel method,” J. Mater. Environ. Sci., vol. 7, no. 4, pp. 1328–1333.
[18] Zhao.B. X., Zhou.J. C., and Rong.L. Y.,2010, “Microstructure and optical properties of TiO2 thin films deposited at different oxygen flow rates,” Trans. Nonferrous Met. Soc. China English Ed., vol. 20, no. 8, pp. 1429–1433.
[19] Guidong.Y., Zifeng.Y., and Tiancun.X.,2012," Preparation and characterization of SnO2/ZnO/TiO2 composite semiconductor with enhanced photocatalytic activity," Applied surface science 258, PP. 8704-8712,.
[20] Cardona.M.,and Yu.P.Y., 2011, ,,Optical Properties of Semiconductors,, Comprehensive Semiconductor Science and Technology, vol. 1–6, pp. 125–195.
[21] Yahya.K. Z., Haider.A. J., Tarek.H. S., and Al-Haddad .R.M.,2014,“Effect of Substrate Temperature on Nanostructure Titanium Dioxide Thin Films Prepared by PLD,” Eng. &Tech.Journal, vol. 32, no. 3, pp. 3–4.
[22] Kumar.R., Sharma.N., and Arora.N.,2016, “Study of spray deposited titanium dioxide films,” Adv. Appl. Sci. Res., vol. 7, no. 3, pp. 142–147.
[23] Bin Mo .L., Bai.Y., Yun Xiang. Q., Q. un Li, Wang .J. Ou, Ibrahim.K.h, and Jiang-Li.C.,2014,“Band gap engineering of TiO2 through hydrogenation,” Appl. Phys. Lett., vol. 105, no. 20.
[24] Bouachiba.Y., Bouabellou.A., Hanini.F., Kermiche.F., Taabouche.A., and Boukheddaden.K.,2014,“Structural and optical properties of TiO2 thin films grown by sol-gel dip coating process,” Mater. Sci. Pol., vol. 32, no. 1, pp. 1–6.
[25] Yildiz.A., Lisesivdin.S.B., Kasap.M., and Mardare.D.,2008," Electrical properties of TiO2 thin films,” Journal of Non-Crystalline Solids 354, pp. 4944–4947.
[26] Nehad.M. Tashtoush A. S. Momani., and Mousa.J.,2019," Determining Optical Constants of Sol-Gel Vanadium Pentoxide Thin Films using Transmittance and Reflectance Spectra,” Inter., J., Appl, Sci, & Tech,, Vol. 9, no. 3.
[27] Sta.I., Jlassi.M., Hajji.M., Boujmil.M.F., Jerbi.R., Kandyla.M., Kompitsas.M., and Ezzaouia.H.,2014, “Structural and optical properties of TiO2 thin films prepared byspin coating”, Journal of Sol-Gel Science and Technology 72, 421 (2014).
[28] Sahoo.A., Jayakrishnan.A.R., Kamakshi.K., Silva.J.P.B., Sekhar.K.C., and Gomes.M.J.M.,2017,“Optical and electrical properties of sol-gel spin coated titanium dioxide thin films,” IOP Conf. Ser. Mater. Sci. Eng., vol. 225, no. 1, pp. 299–305.
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