Influence of Substrate Temperature on Some Properties of Close-Spacing Thermally Evaporated CdTe Thin Films
CdTe thin films with different substrate temperatures have been deposited by thermal evaporation method on glass substrate in vacuum chamber having low pressure about 3.0x10-5 mbar. According to XRD analysis, CdTe thin films are polycrystalline belonging to cubic structure with preferential orientation of (111) plane. The strongest peak intensity of XRD is observed in the film prepared with substrate temperature of 150°C. Band gap and band tail values of the as-deposited films were evaluated from the optical transmission spectra. The lowest dark sheet resistance value was obtained from the film prepared with substrate temperature of 150°C as well. Regarding to our experimental results, it may be indicated that the 150°C substrate temperature is the most suitable condition in preparing CdTe thin films for solar cell applications.
T. Gaewdang et al., "Influence of Substrate Temperature on Some Properties of Close-Spacing Thermally Evaporated CdTe Thin Films ", Advanced Materials Research, Vols. 55-57, pp. 881-884, 2008