Growth and Characterizes of PbI2 Films By Vacuum Evaporation Method


  • Mohammed S. Mohammed Department of Applied Sciences, University of Technology.
  • Ghassq Dawood Salman Department of Applied Sciences, University of Technology.
  • Khaleel I. Hassoon Department of Applied Sciences, University of Technology.



Pbl2 thin films, Vacuum evaporation, direct band gap, Raman scattering, Urbach energy and Reflectivity.


In this work, thin films of lead iodide (PbI2) were deposited on glass substrates with different thicknesses by vacuum thermal evaporation method. The structural, chemical, electrical and optical characteristics of the thin films were studied. XRD analysis showed that lead iodide film is polycrystalline having hexagonal structure. A particle size was estimated by Williamson - Hall technique (13) nm and strain (4.90*10-3) are founded from the intercept with y-axis and slope for PbI2. The UV-VIS measurements illustrated that the lead iodide has a direct optical band gap and Urbach energy to be 0.677 eV2. Raman peaks are detected at 70, 96, 99.5, 188 and 202 cm-1 which corresponding to characteristic of PbI2 at (E21, A11, 2E11 and A1g). The FTIR spectrum of PbI2 thin film showed six bands at 1650, 1900, 3100, 3400, 3600 and 3800 cm-1. Mechanism of dc transport was also analyzed in the temperature range 315–395 K. Also the variation of reflectivity in the range near infrared is conductive generally attributed to thin film nature, where this film contain light scattering and large surface area, which enhance the optical absorption and hence, a low reflectivity is obtained.


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H. Agrawal , A. G. Vedeshwar and V. K. Saraswat, "Growth and Characterization of PbI2 Thin Films By Vacuum Thermal Evaporation," Journal of Nano Research. 24, 1-6 (2013). [


"Sigma-Aldrich catalog: Lead (II) Iodide 99%" ( /catalog/product/aldrich/211168?lang=en%C2%AEion=us), accessed on 29.04.2018.

Sh. Jamil, A. Mousa, M. Mohammad and K. Thajeel, "Structural and Optical Properties of Lead Iodide Thin Films Prepared by Vacuum Evaporation Method," Eng.& Tech. Journal. 29(3), 531 - 543 (2011).

J. Condeles, T. Martins, T. Santos, C. Brunello, M. Mulato and J. Rosolen, " Fabrication and Characterization of Thin films of PbI2 for Medical Imaging", Journal of Non-Crystalline Solids. 338(340), 81-85 (2004). [


S. Shah, F. Olschner, P. Moy, P. Bennett, M. Misra, J. Zhang, R. Squillante and C. Lund, "Lead Iodide X-ray Detection Systems", Electronics and Applications. 380, 266-270 (1966). [


S. Novosad, I. Novosad and I. Matviishin, "Luminescence and Photosensitivity of PbI2 Crystals", Inorganic Materials. 38(10), 1058-1062 (2002). [


J. Burschka, N. Pellet, S. Moon, R. Baker, P. Gao, M. Nazeeruddin, and M. Gratzel, "Sequential Deposition as a Route to High-Performance Perovskite-Sensitized Solar Cells", Nature. 499, 316-320 (2013). [


D. Acun~a, B. Krishnan, S. Shaji, S. Sepulvda and J. Menchaca , "Growth and Properties of Lead Iodide Thin Films by Spin Coating", Bull. Mater. Sci. 39(6), 1453-1460 (2016). [


S. M. Sze, "Physics of Semiconductor Devices," 2nd edition, John-Wiley and Sons, p.501, (1981).

T. Ghosh, S .Bandyopadhyay, K. Roy, S. Kar, A. Lahiri, A. Maiti and K. Goswami, "Optical and Structural Properties of Lead Iodide Thin Films Prepared By Vacuum Evaporation Method," Cryst. Res. Technol. 43 (9), 959-963 (2008). [


M. FOX, "Optical Properties of Solids", University Press. Oxford (2001).

N. Mott, and E. Davis, "Electronic Processes in Non Crystalline Material", 2nd Edtion, Clarendon Press. Oxford, p. 282 (1977).

M. Shkir, H. Abbas, Siddhartha, Z. Khan, "Effect of Thickness on the Structural, Optical and Electrical properties of Thermally Evaporated PbI2 Thin Films", Journal of Physics and Chemistry of Solids. 73, 1309-1313 (2012). [


N. Abd Al- Rashed, "Preparation and Characterization of Annealed CAO/Si Hetrojunction Detector", M.Sc thesis, University of Technology, Applied Science department (2015).

M. Baibarac, I. Smaranda, M. Scocioreanu, R. Mitran, M. Enculescu, M. Galatanu, and I. Baltog, "Exciton Phonon Interaction in PbI2 Revealed by Raman and Photoluminescence Studies Using Excitation Light Overlapping the Fundamental Absorption Edge," Mater. Res. Bull. 70, 762-772 (2015). [


M. Baibarac , I. Baltog , S. Lefrant, "Photoluminescence and Raman Spectroscopy Studies on Polyaniline /PbI2 Composite ", Journal of Solid State Chemistry. 182, 827-835 (2009). [


N. Preda, L. Mihut, M. Baibarac, I. Baltog, R. Ramer, J. Pandele, C. Andronescu, V. Fruth, "Films and Crystalline Powder of PbI2 Intercalated with Ammonia and Pyridine", J. Mater Sci: Mater Electron. 20, S465-S470 (2009). [


R. Warrent and W. Liang, "Raman Spectroscopy of New Lead Iodide Intercalation Compounds", J. Phys, Condens. Matter. 5, 6407-6418 (1993). [


P. Saikia, P. Borthakur and K. Saikia, "Structural, Optical and Electrical Properties of Tin Oxide Thin Film Deposited by APCVD Method", Indian J. Phys. 85 (4), 551-558 (2011). [


K. Kaviyarasu, D. Sajan, M. Selvakumar, S. Thomas, D. Anand, "A Facile Hydrothermal Route to Synthesize Novel PbI2 nanorods", Journal of Physics and Chemistry of Solids. 73, 1396-1400 (2012). [


G. George, "Infrared and Raman Characteristic Group Wavenumbers, Tables and Charts", 3rd ed, Wiley, Chichester (2001).

Y. Chang, C. H. Grein, S. Sivananthan, M. E. Flatte, V. Nathan, S. Guha. "Narrow gap HgCdTe absorption behavior near the band edge including nonparabolicity and the Urbach tail," Appl. Phys. Lett. 89, 062109 (2006). [Crossref]


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Original Article

How to Cite

M. S. Mohammed, G. D. Salman, and K. I. Hassoon, “Growth and Characterizes of PbI2 Films By Vacuum Evaporation Method”, Al-Mustansiriyah Journal of Science, vol. 30, no. 2, pp. 60–66, Sep. 2019, doi: 10.23851/mjs.v30i2.581.

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