Preparation and Study the Structural and Optical characteristics of Zinc Oxide (ZnO) Thin Films.

Attallah, Omar Raad; Fdel Abid, Jamal

doi:10.37652/juaps.2023.142067.1105

	Preparation and Study the Structural and Optical characteristics of Zinc Oxide (ZnO) Thin Films.
Journal of University of Anbar for Pure Science
Article 28, Volume 17, Issue 2, December 2023, Pages 196-202 PDF (727.29 K)
Document Type: Research Paper
DOI: 10.37652/juaps.2023.142067.1105
Authors
Omar Raad Attallah^* ¹; Jamal Fdel Abid²
¹Department of Physics, College of Education for Pure Science, University of Anbar, Ramadi, Anbar, Iraq.
²Department of Physics, College of Education for Pure Science, University of Anbar, Ramadi, Anbar, Iraq
Abstract
In this study, thin films of Zinc Oxide (ZnO) were prepared on glass substrates at a temperature of 350oC using theThermo Chemical Spray Pyrolysis (CSPT) technique. Zinc chloride salts (ZnCl2 (.The structural properties and surface morphology of the CdS thin films were characterized using X-ray diffraction (XRD) and atomic force microscopy (AFM).. Thestructural properties and surface morphology of the ZnO thin films were characterized using X-ray diffraction (XRD) and atomic force microscopy (AFM). The XRD analysis revealed that all the prepared films exhibited a polycrystalline hexagonal structure, with multiple peaks and angles, and a preferred orientation along the (002) direction. The XRD results also indicated that an increase in the solution concentration led to a significant increase in intensity and a slight increase in the crystallite size of the ZnO film. AFM analysis was performed to investigate the surface topography of the films. The results showed that as the molarity increased, the surface roughness, root mean square (RMS), and grain size roughness increased. This can be attributed to the increased molar concentration, which resulted in a slight increase in droplet size. However, despite these surface roughness variations, the prepared films can still be used as windows in solar cells. The optical properties, including transmittance, absorption coefficient, and band gap energy, were determined by measuring the absorbance spectrum using a UV-Visible Spectrophotometer within the wavelength range of 300 nm to 1100 nm. The ZnO prepared films have direct transitions taking place and exhibited transmittance values ranging from approximately
Keywords
Thin films,,; ,،Transparent Conductive Oxides,,; ,،Chemical Spray Pyrolysis

References
K. Mohammed,''Study of some optical Properties of PbS thin films deposited by Chemical Spray Pyrolysis Method''. Engineering and Technology Journal, 30(6), P.135-145.‏ (2012). Hussain, ''Investigation of structural and optical properties of nanocrystalline ZnO''.‏ M.S.C.thesis ,Linkpöing University (2008). Sudjatmoko, W. Wirjoadi, & B.Siswanto, ''Influence of substrate temperature on structural, electrical and optical properties of ZnO: Al thin films''. Atom Indonesia, 35(2), P.115-125.‏ (2009). Sali, M.Boumaour, & R.Tala-Ighil, ''Preparation and characteristic of low resistive zinc oxide thin films using chemical spray technique for solar cells application The effect of thickness and temperature substrate''. Revue des Energies Renouvelables CICME, 8, P.201-207.‏ (2008). M.Angelats-Silva,''Study of structural, electrical, optical and magnetic properties of ZnO based films produced by magnetron sputtering'' M.S.C. Thesis,University of puertoico Mayagüez Campus.‏ (2006). Al Asmar, J. P.Atanas, M. Ajaka, Y. Zaatar, G. Ferblantier, J. L. Sauvajol,... & A.Foucaran,''Characterization and Raman investigations on high-quality ZnO thin films fabricated by reactive electron beam evaporation technique''. Journal of Crystal Growth, 279(3-4), P.394-402.(2005). Farden,''Handbook of Modern Sensors Physics'', Designs, and Applications, Third Editon. (2003). Gründler, ''Chemical sensors: an introduction for scientists and engineers''. Springer Science & Business Media.‏ (2007). Lacy, ''Preparation and assessment of thin films for uammonia sensors'' Lect. Notes Eng. Comput. Sci.(2), P.613–616.(2013). Alghoraib, M.Marouf, & K. H.Alderbas, ''Preparation of ZnO thin films as an effective medium for random lasers and study of their structural and optical properties''. Damascus University Journal for the Basic Sciences, 36(2), P.159-187.‏ (2020). Capone, A.Forleo, L. Francioso, R. Rella, P.Siciliano,J.Spadavecchia, ... & A. M. Taurino,''Solid state gas sensors: state of the art and future activities''. Journal of Optoelectronics and Advanced Materials, 5(5), P.1335-1348.‏(2003). Li, T.Ahmed, M.Ma, T.Edvinsson, & J.Zhu, ''A facile approach to ZnO/CdS nanoarrays and their photocatalytic and photoelectrochemical properties''. Applied Catalysis B: Environmental, 138, P.175-183.‏(2013). Irimpan, D. Ambika, V.Kumar, V. P. N. Nampoori, & P. Radhakrishnan, ''Effect of annealing on the spectral and nonlinear optical characteristics of thin films of nano-ZnO''.Journal of Applied Physics, 104(3). P1-9.‏(2008). K. Jana, A.Pal, & K. Chatterjee,''Self assembled flower like CdS–ZnO nanocomposite and its photo catalytic activity''. Journal of Alloys and Compounds, 583, P.510-515.‏(2014). Nayak,''Enhanced light to electricity conversion efficiency of CdS–ZnO composite nanorod based electrochemical solar cell''. Materials Chemistry and Physics,133(1), P.523-527.(2012). ‏ Murugadoss,''ZnO/CdS nanocomposites: synthesis, structure and morphology''. Particuology, 10(6), P.722-728.‏ (2012). Hou, & L.''Wang, Sonochemical synthesis and charge transfer property of core/shell ZnO/CdS nanohybrids''.Materials Letters, P.122, 29-32.‏ (2014). C.Nehru, M.Umadevi, & C.Sanjeeviraja,''Studies on structural, optical and electrical properties of ZnO thin films prepared by the spray pyrolysis method''. International Journal of Materials Engineering, 2(1),P. 12-17. (2012). Schneller, R. Waser, M.Kosec, & D.Payne, ''Chemical solution deposition of functional oxide thin films . Vienna: Springer Vienna.‏ (Eds.), P. 1-796.(2013). Al-Ahmadi,''Fabrication and characterization of ZnO film by spray pyrolysis and ZnO polycrystalline sintered pellets doped with rear earth ions" (Doctoral dissertation, Ohio University).‏ (2003). M.Saleh,''Influence of Doping on Optical Properties of (CdS: Fe+3) Thin Films Prepared by Chemical Spray pyrolysis''. Al-Mustansiriyah Journal of Science, 30(1), P.193-198.‏ (2019). Yergaliuly, B.Soltabayev, S.Kalybekkyzy, Z.Bakenov, &A. Mentbayeva, ''Effect of thickness and reaction media on properties of ZnO thin films by SILAR''.Scientific reports, 12(1), P.1-13.‏(2022). Boukhoubza, M. Khenfouch, M. Achehboune, B. M. Mothudi, I. Zorkani, & A. Jorio,"X-ray diffraction investigations of nanostructured ZnO coated with reduced graphene oxide''. In Journal of Physics: Conference Series, 1292(1), p.1-7. IOP Publishing,(2019). M.Sze, & K. K. Ng, ''Physics of semiconductor devices''.John wiley & sons. New York, P.778.‏(1981). Mallick , & C. S. Sahoo,"Effect of CuO Addition on the Structural and Optical Properties of NiO Nanoparticles", Nanoscience and Nanotechnology, 3(3), P.52-55,(2013). Verma, P. K.Dwivedi, & B.Das,''Structure–property correlation of pure and Sn-doped ZnO nanocrystalline materials prepared by co-precipitation''. Journal of Experimental Nanoscience, 10(6), P.438-448.‏ (2015).
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