Characterization and preparation of Cu2ZnSnS4 thin films by ball-milling, coating and sintering
Materials Letters(2014)
Abstract
Cu2ZnSnS4 (CZTS) thin films were prepared by ball-milling, coating and sintering. Structural, morphological, compositional, and optical properties of CZTS thin films were analyzed by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), scanning electron microscopy (SEM) and UV–vis spectrophotometer respectively. The results indicated that CZTS phases were observed at 200°C and the crystallinity was improved with the temperature rising. When sintered over 450°C, the CZTS thin films had relatively dense structure, large grains (34.7–36.9nm). And the optical band gap of the thin film sintered at 450°C was 1.44eV.
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Key words
CZTS,Ball milling,Coating,Sintering,Optical band gap
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