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Laser annealing of CdTe thin films with two different wavelengths has been studied in this work. The CdTe thin films were grown by thermal evaporation at a deposition current of 28A and then subjected to post deposition laser annealing at two different wavelengths of 532nm (green) and 1064nm + 532nm (infrared + green). The other parameters like laser output energy, stage velocity and pulse repetition...
Cu2ZnSnS4 (CZTS) thin films have been deposited by co-sputtering technique from a CZTS and ZnS target on top of glass substrate aiming to increase the Zn content on the CZTS thin films. The prepared sample was annealed at 500 °C in a high vacuum (50mTorr) ambient for 20 min. of duration. Structural, compositional, and electrical properties of the prepared films were carried out in this study. The...
Thin films of ZnS were deposited on cleaned soda lime glass substrates by using thermal evaporation and RF magnetron sputtering techniques. For thermal evaporation, a boat-substrate distance of 4cm was maintained. In case of sputtering, the deposition was done at a substrate temperature of 400°C. A comparative study of the structural and optical properties of the thin films prepared from both the...
Cadmium Telluride thin films have been deposited on FTO coated glass substrates by using the sputtering and thermal evaporation technique. CdTe thin film was firstly grown by sputtering at a substrate temperature 300°C, as well as CdTe thin film was also deposited by thermal evaporation technique. The grown films from both processes were annealed in a vacuum furnace of nitrogen ambient at pressure...
The compositional, crystal and microstructural, optical transmission and absorption properties of ZnxCd1−xS thin films at low zinc (Zn) content (x=0.2) fabricated by RF co-sputtering using CdS and ZnS were investigated. These ternary compounds were characterized by energy dispersive X-ray analysis (EDX) for composition, X-ray diffraction (XRD) for crystal structure, UV-vis for optical study, forced...
The structural and optical properties of annealed CdS are studied in this work. The CdS films are deposited on ITO coated glasses by sputtering at different substrate temperatures and subsequently annealed in an O2/N2 ambient. It has been observed from XRD diffraction that the films show a trend of conversion from poly crystalline to amorphous or mixed phases after annealing. The films fabricated...
Thin-film, high efficiency crystalline Si solar cells promise significant cost savings in contrast with conventional substrate solar cells. These savings are achieved through reduced Si usage assuming highly (~20-30%) efficient thin film Si solar cells can be manufactured. A necessary condition for high efficiency solar cells in thin-film configurations is complete optical absorption of sunlight....
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