Effect of annealing on properties of electrochemically deposited CdTe thin films
作者： A.V. Kokate , M.R. Asabe , P.P. Hankare , B.K. Chougule
DOI: 10.1016/J.JPCS.2006.09.018
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摘要: Abstract Thin films of CdTe have been deposited onto stainless steel and fluorine-doped tin oxide (FTO)-coated glass substrates from aqueous acidic bath using electrodeposition technique. The different preparative parameters, such as deposition time, temperature pH the optimized by photoelectrochemical (PEC) technique to get good quality photosensitive material. are annealed at in presence air. Annealing is also PEC film 200 °C showed maximum photosensitivity. Different techniques used characterize (at 200 °C) thin film. X-ray diffraction (XRD) analysis polycrystalline nature, a significant increase XRD peak intensities observed for after annealing. Optical absorption shows direct transition with band gap energy 1.64 eV annealing it decreases 1.50 eV. Energy dispersive (EDAX) study as-deposited nearly stoichiometric compound formation. Scanning electron microscopy (SEM) reveals that spherically shaped grains more uniformly distributed over surface substrate
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