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Investigation of the structural, optical and electrical properties of Cu3BiS3 semiconducting thin films

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Figure

Fig.1. a) Secondary electron image of film surface. (b) Cross sectional SEM micrograph of Cu3BiS3/ Mo/ glass
Fig.3(a). A number of extra peaks, associated with metallic molybdenum and bismuth are also observed, The XRD spectrum of the film shows a clear pattern of single phase orthorhombic lattice structure, as shown in indicating the presence of Bi clusters
Fig. 4. (a) PR spectra of Cu3BiS3 films at different temperatures with best fits (solid lines) using Eq.(1),   (b) temperature dependence of the X and Y band gap energies with best fits (solid lines) using Eq.(2)
Fig.5. Normalised PL spectra at different laser excitation power (a), temperature dependence of the PL spectra (b), Arrhenius plot of the temperature quenching of the A1 and A2 band integrated intensity (� experimental points, - fitted straight line)  (c)

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