Physical properties of SnO2: Co thin films prepared by chemical spray pyrolysis


  • Areej Adnan Hateef Iraqi Ministry of Sciences and Technology, Iraq. Author
  • Marwa Abdul Muhsien Hassan College of Science, Al-Mustansiriyah University, Baghdad, Iraq. Author
  • Najim A. Sumoom Iraqi Ministry of Sciences and Technology, Iraq. Author
  • Sabah Jameel Iraqi Ministry of Sciences and Technology, Iraq. Author



Thin films, SnO2, Chemical spray pyrolysis, Cobalt


In this research, Co-doped SnO2 thin films were prepared by chemical spray pyrolysis technique using SnCl4.5H2O and CoCl2.6H2O, with impurity percentage are (0%-3%-6%-9%) on glass substrates preheated at (450oC) with spray rate 5sec./1min, and thickness (400nm). The investigation of (XRD) indicates that the (SnO2) films are polycrystalline type of (tetragonal), the optical properties and band gap energy was observed  and it`s found varied from (3.361-2.855 eV) when increasing in percentage  impurity the energy band gap decreased. The Hall coefficient, concentration and mobility of charge carriers of SnO2:Co films studied, and their results observed that the increase in impurity of cobalt caused increase in electrical properties generally.


-A.Gholizadeh, N.Tajabor, M.R.Alinejad, " Influence of N2- and Ar-ambient annealing on the physical properties of SnO2:Co transparent conducting films prepared by spray pyrolysis technique", "Iran journal of crystallography and mineralogy", Vol. 16, No. 4, Winter 1387/2009. DOI:

-S.Nicoletti, L.Dori, G.Cardinali, A.Parisini ,"Gas sensors for air quality monitoring: realization and characterization of undoped and noble metal-doped SnO2 thin sensing films deposited by the pulsed laser ablation", "Sensors and Actuators B", Vol.(60), 90-96, 1999. DOI:

-L.A.Patil, "Ultrasonically sprayed nanostructured SnO2 thin films for highly sensitive hydrogen sensing", ISBN 978-1-4398- 34015 Vol.(1), 2010.

-M. R. Alinejad, M. Ghanaatshoar, M. M. Tehranchi, M. M. Bagheri Mohagheghi, S.M. Mohseni, "Magnetooptical Faraday effect in Cobalt- doped SnO2 transparent semiconducting films prepared by spray pyrolysis technique", Proceedings of the Third Moscow International Symposium on Magnetism (2005).

-S.B.Patil, P.P.Patil, M.A.More, "Acetone vapour sensing characteristics of cobalt-doped SnO2 thin films". "Sensors and Actuators B", Vol. (125), 126-130, 2007. DOI:

-V.Subramanian, J.C.Jiang, P.H.Smith and B.Rambabu, "Preparation of cobalt doped SnO2 nanorods and nanoparticles", "Journal of Nanoscience and Nanotechnol", Vol.(4), No.(125), 2004 DOI:

-K.Y. Rajpure, et al., "Preparation and Properties of Fe-doped SnO2 Thin Films by Spray Pyrolysis Technique". "Journal of Materials Chemistry and Physics", Vol.(64),No.(184), 2000 DOI:

-Yu, A.S. and R.Frech, "Coating of multi-walled carbon nanotube with SnO2 films of controlled thickness and its application for Li-ion battery", "Journal of Power Sources", Vol.(104), No.(97), 2002

-D. Perednis & L. J. Gauckler, Thin film deposition using spray pyrolysis, Journal of Electroceramics, 14, pp. 103 – 111, (2005) DOI:

-E. Arca, K. Fleischer, and I. V. Shvets, Influence of the precursors and chemical composition of the solution on the properties of zno thin films grown by spray pyrolysis, J. Phys. Chem. C 113, 21074–21081 (2009) DOI:

-D. R. Patil, L. A. Patil and D. P. Amalnerkar, Ethanol gas sensing properties of Al2O3doped ZnO thick film resistors, Bull. Mater. Sci., Vol. 30, No. 6, pp. 553 – 559, (2007) DOI:

-N. Yamazoe, G. Sakai, and K. Shimanoe, Oxide semiconductor gas sensors, Catalysis Surveys from Asia Vol. 7, No. 1, (2003) DOI:

-R. Savu, M. A. Ponce, E. Joanni, P. R. Bueno, M. Castro, M. Cilense, J. A. Varela, E. Longo, Grain size effect on the electrical response of SnO2 thin and thick film gas sensors, Materials Research, Vol. 12, No. 1, 83-87, (2009) DOI:

-B.D.Cullity, "Elements of X-ray diffraction",(USA: Addison-Wesley Publishing Co.) 1956.

-V. Arivazhagan, S. Rajesh, Preparation of Nanocrystalline SnO2 thin films for Micro Gas Sensors, Journal of Ovonic Research, Vol. 6, No. 5, pp. 221-226, (2010)

-M. Boshta, F. Mahmoud, Characterization of Sprayed SnO2: Pd thin films for Gas Sensing Applications, Journal of Ovonic Research, Vol. 6, No. 2, pp. 93-98, (2010)

-M.H.Habibi, N.Talebian, "The Effect of Annealing on Structural, Optical and Electrical Properties of Nanostructured Tin Doped Indium Oxide Thin Films", "Acta Chim. Slov", Vol.(52), pp.53–59, 2005

-G.E.Patil, D.D.Kajale, D.N.Chavan, N.K.Pawar, P.T.Ahire, S.D.Shinde,V.B.Gaikwad, G.H.Jain, "Synthesis characterization and gas sensing performance of SnO2 thin films prepared by spray pyrolysis", "Bull. Mater. Sci.", Vol.(34), No.(1), pp. 1–9, 2011 DOI:

-B. Zhang, Y. Tian, Structural, Optical, Electrical properties and FTIR studies of Fluorine doped SnO2 films Deposited by Spray Pyrolysis, J. Mater Sci., 46: 1884-1889, (2011) DOI:

-B. Zhang, Y. Tian, The FTIR studies of SnO2:Sb films Deposited by Spray Pyrolysis, Materials Letters 65, pp. 1204-1206, (2011) DOI:



How to Cite

Physical properties of SnO2: Co thin films prepared by chemical spray pyrolysis. (2013). Journal of Zankoy Sulaimani - Part A, 15(4), 29-36.

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