Effect of substrate temperature on structural and optical properties of cadmium sulfide thin films prepared by evaporation thermal deposition

Nadheer Jassim Mohammed, Hassan A. Mahdi, Safaa F. Madlul, Adnan Kh. Hasan

Abstract


In this research , we study the effect of substrate temperature (423K and 473K) on structural and optical properties for thin films of cadmium sulfide (CdS) by evaporation thermal deposition method on glass substrates and the thickness was about (390nm).XRD analysis showed that CdS thin films prepared at (423K and 473K) are single crystal and have preferred orientation along (002).The grain size was found to be increased with increasing substrate temperature, in addition, the atomic force microscopy(AFM) an increase in root mean square (RMS) with an increase in substrate temperature. The absorbance and transmittance spectra have been recorded in the range off wave length(400-800nm), and it was found that the transmittance decreases with increasing substrate temperature, while the optical band gap decreases from (2.4-2.2ev)for allowed direct transition. CdS thin films should further investigated for application towards the fabrication of solar cells.

Keywords


Cadmium sulfide, Evaporation thermal deposition method, grain size, substrate temperature, thin films, optical properties, structural properties.

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References


H. Moualkva, S. Hariech, M.S. AidaStructural and optical properties of CdS thin films grown by chemical bath deposition, Thin Solid Films, 518 (2009), pp. 1259-1262

S.P. Mondal, A. Dhar, S.K. RayOptical properties of CdS nano wires prepared

by Dc electrochemical deposition in porous alumina template, Mater Sci Semicond Process, 110 (2007), pp. 185-193

K. Ravichandran, P. PhilominathanInvestigations on micro structural and optical properties of CdS films fabricated by a low-cost, simplified spray technique using perfume atomizer for solar cell application, Sol Energy, 82 (2008), pp. 1062-1066

K. Senthil, D. Mangalaraj, Sa.K. Narayandass, S. AdachiOptical constants of vacuum evaporated cadmium thin films measured by spectroscopic ellipsometry, Mater Sci Eng, B78 (2000), pp. 53-58

M. Tomakin, M. Altunbas, E. Bacaksiz, S. CelikCurrent transport mechanism In CdS thin films prepared by vacuum evaporation method at substrate temperatures below room temperature, Thin Solid Films, 520 (2012), pp. 2532-2536.

K.L.Chopra, “ Thin Film Devices Application ”, Plenum Press, New York, (1983).

Montes , M.Gracia-Jimfenez,MA.vidal Sh.torres, (E-LSEVIER) “ Thin solid films 305,1997,345-350”.

M.S.Kale,Y.R.Teda,M.P.Bhole and D.S. Bhavsar "Structural, optical and

Thermo Electrical properties of Nanostructured vacuum Evaporation Cds thin

films". Elctron Mater Lett. Vol.10,No.1(2014) pp.21-25.

V.A.Gevrgyana, L.A.Hakhoyana, N.R.Mangasaryana, P.P.Gladyshev, Substrate temperature and annealing effects on the structural and optical properties of nano-CdS films deposited by vacuum flash evaporation technique, Chalcogenide Letters Vol. 13, No.8 (2016) p. 331-338.




DOI: http://dx.doi.org/10.23851/mjs.v30i1.557

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