M. Sekkati, E. Benamar, Taoufik Slimani Tlemcani, M. Taibi, S. Aazou, Z. Edfouf, F. C. El Moursli, G. Schmerber, Z. Sekkat, A. Dinia, A. Slaoui, M. Abd-lefdil
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Study of sprayed CZTS thin films containing various copper content
By ultrasonic spray, we have deposited CZTS films on Mo coated substrates. A sulfurization treatment was systematically performed under Argon atmosphere at 500 °C for one hour. Copper content effect of CZTS thin films of about 1 µm was studied by X-ray diffraction, Raman spectroscopy and optical transmittance measurements. The films exhibited the kesterite structure despite the appearance of some secondary phases for a high and poor copper content. The gap energy value was sensitive to the copper content and ranged between 1.42 eV and 1.68 eV.
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