The Effect of Zinc Acetate Concentration on Optical Properties of ZnS Thin Films by Spectroscopic Ellipsometry Analysis Method
Control Science and Engineering
Volume 3, Issue 1, June 2019, Pages: 6-11
Received: Dec. 3, 2018; Accepted: Dec. 14, 2018; Published: Mar. 28, 2019
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Authors
Batool Ahmadi Khanegahi, Department of Physics, Faculty of Science, Urmia, Iran
Hassan Sedghi, Department of Physics, Faculty of Science, Urmia, Iran
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Abstract
In the present work ZnS thin films with different concentration (0.25, 0.5, 0.75 and 1 M) have been deposited on glass substrates by sol–gel spin coating method using an acidic solution, containing zinc acetate (Zn(CHC3COO) 2.2H2O) and thiourea (CH4N2S) as precursors. The optical properties of ZnS thin films such as refractive index, extinction coefficient, dielectric function and band gap energy of the films were obtained by spectroscopic ellipsometry analyzes method in the wavelength of 300 to 800 nm. Considering the data obtained, it can be deduced that the optical properties of ZnS films is highly influenced by Zn concentration. The extinction coefficients (k) of the films were increase with increasing concentration of zinc acetate. From these results it is found that the energy gap of the ZnS films decreases with increasing concentration of zinc acetate in the range of 3.65-2.75eV.
Keywords
Spectroscopic Ellipsometry, Zn Concentration, Thin Film, Zinc Sulfide, Optical Properties
To cite this article
Batool Ahmadi Khanegahi, Hassan Sedghi, The Effect of Zinc Acetate Concentration on Optical Properties of ZnS Thin Films by Spectroscopic Ellipsometry Analysis Method, Control Science and Engineering. Vol. 3, No. 1, 2019, pp. 6-11. doi: 10.11648/j.cse.20190301.12
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Copyright © 2019 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
References
[1]
S. Vesna, H. E. Thomas, C. P. Alain, and, J. M. Randy, “Sol-gel processing of ZnS,” J. Matterials Letters, vol.35, pp.35-38, 1997.
[2]
M. Saeed. A, Saiva. R and N. Shahzad, “Optical properties of sol-gel deposited ZnS thin films: spectroscopic ellipsometry,”International Conference on Solid State Physics, vol.2, pp.5497-5503, 2015.
[3]
K. Raju, C. R. N. Baghel, V. K. Chandra and B. P. Chandra, “Synthesis, characterization and photoluminescence studies of undoped ZnS nanoparticles,” J. Superlattices and Microstructures, vol. 84, pp. 132-143, 2015.
[4]
H. F. Mohd, and K. Rajneesh, “Structural, optical and photoconductivity study of ZnS nanoparticles synthesized by a low temperature solid state reaction method,” J. Materials Science in Semiconductor Processing, vol.20, pp. 61-67, 2014.
[5]
Y. Ali. and J. Aseel, “NO2 Gas Sensing Properties of Nanoparticle Zinc Sulfide Films Sensors Prepared by Chemical Spray Pyrolysis,” International Journal of Basic and Applied Science, vol.03, pp. 1-20, 2015.
[6]
Q. Lai, I. L. Burtrand, M. K. Jong, E. J. Jae, and Y. C. Jae, “Synthesis and characterization of ZnS: Cu, Al phosphor prepared by a chemical solution method,”J. Luminescence, vol.104, pp. 261-266, 2003.
[7]
O. O. Isaiah and C. Lee, “Synthesis and processing of CdS/ZnS multilayer films for solar cell application,” J. Thin Solid Films, vol.474, pp.77-83, 2005.
[8]
M, I. Rusu, C. R. Stefanb, M. Elisab, I. D. Ferarub, I. C. Vasiliub, C. Barthac, R. D. Truscad, E. Vasiled and S. Peretze, “CdS/ZnS-doped silico-phosphate films prepared by sol-gel synthesis,” J. Journal Non- Crystalline Solids, vol. 481, pp. 435-440, 2018.
[9]
Z. Z. Zhang, D. Z. Shen, J. Y. Zhang, C. X. Shan, Y. M. Lu, Y. C. Liu, B. H. Li, D. X. Zhao, B. Yao, and X. W. Fan, “The growth of single cubic phase ZnS thin films on silica glass by plasma-assisted metal organic chemical vapor deposition,” J. Thin Solid Films, vol.513, pp. 114-117, 2006.
[10]
C. H. Su, P. Zhang, T. N. Zhang, Y. Y. Chen, and Z. H. Ye, “ZnS thin films grown by atomic layer deposition on GaAs and HgCdTe substrates at very low temperature,”J. Infrared Physics and Technology, vol.85, pp.280-286, 2017.
[11]
M. Oikkonen, M. Tammenmaa and M. Asplund, “Comparison of ZnS thin films grown by atomic layer epitaxy from zinc acetate and zinc chloride: An x-ray diffraction and spectroscopic ellipsometry study,”J. Materials Research Bulletin, vol.23, pp.133-142, 1988.
[12]
H. Kangarlou and M. M. Aghgonbad, “Deposition-rate dependence of optical properties of titanium
[13]
Nanolayers, Ukr. J. Phys. Opt, vol.13, pp.4-11.2012.
[14]
M. Y. Nadeem and W. Ahmed, “Optical Properties of ZnS Thin Films,” Turkish Journal of Physics, vol. 24, pp. 651-659, 2000.
[15]
J. Yuvaloshin, Ra. S and G. Ravi, “Effect of annealing on optical and structural properties of ZnS/MnS and MnS/ZnS superlattices thin films for solar energy application,” J. Optic, vol.125, pp.1775-1779, 2014.
[16]
G. L. Agawane, S. W. Shin, M. S. Kim, M. P. Suryawanshi, K. V. Gurav, A. V. Moholkar, J. Y. Lee, J. H. Yun, P. S. Patil and Jin, H. K, “Green route fast synthesis and characterization of chemical bath deposited nanocrystalline ZnS buffer layers Current,” J. Applied Physics, vol. 13, pp. 850-856, 2013.
[17]
K. B. Bacha, A. Timoumi, N. Bitri and H. Bouzouita, “Structural, morphological and optical properties of sprayed ZnS thin films on various substrate natures, “J. Optik, vol.126, pp. 3020–3024, 2015.
[18]
X. Xu, F. Wang, Z. Li, J. Liu, J. Ji and J. Chen, “The Effect of Thickness Nanoparticle ZnS Films on Optical Propertie,” J. Electrochim. Acta, vol.87, pp.511-517, 2013.
[19]
R. W. Miles, O. E. Ogah, G. Zoppi and I. Forbes, “Photosensitivity of ZnO/Cu20 thin film hetrojunction,” J. Thin Solid Films, vol.517, 2009.
[20]
E. Guneri, C. Ulutas, F. Kirizigul, G. Altindemir, F. Gode and C. Gumus, “Effect of sulfosalicylic acid (C7H6O6S) on the electrodeposition of pure ZnS nanocrystal thin films from acidic solutions,” J. Appl. Surf. Sci, vol.257, 2010.
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