Study of Thermally Deposited CdS Thin Films for CdTe Thin Film Solar Cell Application
The thin films of Cadmium sulphide (CdS) materials were prepared on glass substrates by thermal vacuum evaporation technique. X-ray diffraction (XRD) pattern of the deposited films showed cubic structure with a preferred orientation along the (111) plane. The grain size and lattice constants were measured from XRD data. The optical properties such as transmittance, reflectance, absorption co-efficient and band gap were investigated. The band gap was found from 2.59eV to 2.67eV for thickness varied from 100 nm to 50 nm. The thickness of the film was measured by insitu thickness monitor. The compositional parameter showed that the presence of compound CdS of the films. The deposition condition and the deposition technique showed its suitability for photovoltaic application.
Saad F. Oboudi, Ghuson H. Mohamed, mohammed K. Khalaf Kadhim A. Adem. Synthesis and Study of Annealing Effect on Electrical Properties of CdS doped Zn Thin Films. Int. J.Thin Film Sci. Tec. 2 No. 3, 267-275 (2013).
Jaehyeong Lee. Comparison of CdS films deposited by different techniques: Effects on CdTe solar cell. Applied Surface Science 252 (2005) 1398–1403.
K. Senthil, D. Mangalaraj, Sa.K. Narayandass. Structural and optical properties of CdS thin films. Applied Surface Science 169-170 (2001) 476-479.
K.L. Narayanan, K.P. Vijayakumar, K.G.M. Nair, B. Sundarakkannan, R. Kesavamoorthy. Raman scattering studies of oxygen implanted CdS thin films prepared by vacuum evaporation. Nuclear Instruments and Methods in Physics Research B 160 (2000) 471-475.
M. Tomakin, M. Altunbaş, E. Bacaksiz, Ş. Çelik. Current transport mechanism in CdS thin films prepared by vacuum evaporation method at substrate temperatures below room temperature. Thin Solid Films 520 (2012) 2532–2536.
T M Rajakumar, V Uma, & R Chandramani. Magneto- transport and mechanical properties of thermally evaporated Cd chalcogenide films. Indian Journal of Pure and Applied Physics. Volume 51 February 2013, pp131-237.
Hiroshi Uda, Hideo Yonezawa, Yoshikazu Ohtsubo, Manabu Kosaka, Hajimu Sonomura,” Thin CdS films prepared by metalorganic chemical vapor deposition”. Solar Energy Materials and Solar Cells 75 (2003) 219–226.
B Bhattacharjee, S K Mandal, K Chakrabarti, D Ganguli and S Chaudhuri, Optical properties of Cd1−xZnxS nanocrystallites in sol–gel silica matrix. Journal of Physics D: Applied Physics 35 (2002) 2636,doi:10.1088/0022-3727/35/20/324.
Mott M. and Davis E. Electronic Process in Non-Crystalline Materials. 2nd ed. University Press Oxford, 1979.
Ruby Das, Suman Pandey. Comparison of Optical Properties of Bulk and Nano Crystalline Thin Films of CdS Using Different Precursors. IJMS Vol.1 Iss.1 2011 PP.35-40.
R. Castro-Rodriguez, J. Mendez-Gamboa, I. Perez-Quintana, R. Medina-Ezquive. CdS thin films growth by fast evaporation with substrate rotation. Applied Surface Science 257 (2011) 9480– 9484.
S. Aksu, E. Bacaksiz, M. Parlak, S. Yılmaz, I. Polat, M. Altunbas, M. Turksoy, R. Topkaya, K. Ozdogan. Structural, optical and magnetic properties of Mn diffusion-doped CdS thin films prepared by vacuum evaporation. Materials Chemistry and Physics 130 (2011) 340– 345.
A I Oliva, J E Corona, R Patino and A Ioliva-Aviles Chemical bath deposition of CdS thin films doped with Zn and Cu. Bull. Mater. Sci., Vol. 37, No. 2, April 2014, pp. 247–255.