Abstract
CdS thin films simultaneously doped with Mg and Cl at different doping concentrations (0, 2, 4, 6 and 8 at%) were prepared on glass substrates by spray pyrolysis technique using perfume atomizer at 400 °C. The effect of Mg and Cl doping concentration on the structural, morphological, optical and electrical properties of the deposited films were investigated using X-ray diffraction (XRD), scanning electron microscopy, UV–Vis spectroscopy and dc electrical measurements, respectively. XRD analysis showed that the undoped and doped CdS films exhibit hexagonal structure with a preferential orientation along the (0 0 2) plane. The 2θ angle position of the (0 0 2) peak of the doped films was shifted towards a higher angle with increasing Mg and Cl concentration. The UV–Vis–NIR absorption spectra of Mg and Cl doped thin films are measured and classical Tauc approach was employed to estimate their band gap energies. The increase in band gap energy from 2.46 to 2.73 eV with the reduction in crystallite size supports quantum size effect. Raman spectra implied that more defects existed in the doped samples. Electrical studies showed that all the films have resistivity in the order of 101 Ω-cm and the CdS film with 6 at% Mg and Cl concentration has a minimum resistivity of 1.332 × 101 Ω-cm.
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E. Cetinorgu, C. Gumus, R. Esen, Thin Solid Films 515, 1688 (2006)
G. Perna, V. Capozzi, M. Ambrico, V. Ligonze, A. Minafra, L. Schiavulli, M. Pallara, Thin Solid Films 453, 187 (2004)
D. Acosta, C. Magana, A. Martinez, A. Maldonado, Sol. Energy Mater. Sol. Cells 82, 11 (2004)
T. Sivaraman, A.R. Balu, V.S. Nagarethinam, Mater. Sci. Semicond. Proc. 27, 915 (2014)
N. Maticiuc, J. Hiie, T. Raadik, A. Graf, A. Gavrilov, Thin Solid Films 535, 184 (2013)
V.D. Novruzov, E.F. Keskenler, M. Tomakir, S. Kahraman, O. Gorur, Appl. Surf. Sci. 280, 318 (2013)
T. Sivaraman, A.R. Balu, V.S. Nagarethinam, Res. J. Mater. Sci. 2, 6 (2014)
D. Bao, H. Gu, A. Kuang, Thin Solid Films 312, 37 (1998)
M. Suganya, A.R. Balu, K. Usharani, Mater. Sci. Pol. 32, 448 (2014)
P. Scherrer, Gottinger Nachrichten Gesell 2, 98 (1918)
G.K. Williamson, W.H. Hall, Acta Metall. 1, 22 (1953)
S. Butt, N.A. Shah, A. Nazir, Z. Ali, A. Maqsood, J. Alloys Compd. 587, 582 (2014)
J.C. Manifacier, M. De Murcia, J.P. Fillard, E. Vicario, Thin Solid Films 41, 127 (1977)
C. Rajashree, A.R. Balu, V.S. Nagarethinam, Int. J. ChemTech Res. 6, 347 (2014)
M.A. Mahdi, Z. Hassan, S.S. Ng, J.J. Hassan, S.K. Mohd Bakhori, Thin Solid Films 520, 3477 (2012)
A.R. Babur, S.S. Shinde, A.V. Moholkar, C.H. Bhosale, J.H. Kim, K.Y. Rajpure, J. Alloys Compd. 505, 416 (2010)
A.I. Inamdar, A.C. Sonavane, S.K. Sharma, H. Im, P.S. Patil, J. Alloys Compd. 495, 76 (2010)
M. Green, Z. Hussain, J. Appl. Phys. 69, 7788 (1991)
S. Wemple, Phys. Rev. B 7, 3767 (1973)
T. Wager, M. Krbal, T. Kohoutek, V. Penina, M. Vlek, M. Vlek, M. Fruman, J. Non-Cryst. Solids 326, 233 (2003)
G. Wang, K. Guo, Phys. B 315, 234 (2002)
H. Khallaf, G. Chai, O. Lupan, L. Chow, S. Park, A. Schulte, Appl. Surf. Sci. 255, 4129 (2009)
O. de Melo, L. Hernandez, O. Zelaya-Angel, R. Lozado-Morales, M. Becerril, E. Vasco, Appl. Phys. Lett. 65, 1278 (1994)
M. Abdulkbadar, B. Thomas, Nanostruct. Mater. 5, 289 (1995)
W.C. Chou, A. Petrou, J. Warnock, B.T. Jonker, Phys. Rev. B 46, 4316 (1992)
M. Cao, L. Li, B.L. Zhang, J. Huang, K. Tang, H. Cao, Y. Sun, Y. Shen, J. Alloys Compd. 530, 81 (2012)
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The authors thank Mr. Karthik, Technical officer and Head, Department of Physics for the XRD, FTIR and Raman analysis.
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Sivaraman, T., Nagarethinam, V.S., Balu, A.R. et al. Structural, morphological, optical and electrical properties of CdS thin films simultaneously doped with magnesium and chlorine. J Mater Sci: Mater Electron 27, 1158–1164 (2016). https://doi.org/10.1007/s10854-015-3865-7
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DOI: https://doi.org/10.1007/s10854-015-3865-7