Abstract
The CdxPb1–xS thin films with different concentrations of x from 0.2 to 0.8 were synthesized using the chemical bath deposition method. X-ray diffraction (XRD) and Williamson–Hall (W–H) plot gives the crystallite size that decreases with increased concentration. XRD, high-resolution transmission electron microscopy and selected area electron diffraction patterns of the film samples evidence the hexagonal phase structures of both CdS and PbS. Energy-dispersive X-ray confirmed the presence of Cd, Pb and S in the film samples. The transmittance of the film samples increases with the increase in concentration. Optical studies show the prominent blue shift in bandgap energy, whereas the Urbach energy decreases with the increased concentration x. The electrical conductivity of the films at room temperature is of the order of 10–5 (Ωcm)−1. The efficiency of the heterojunction cell structures CdxPb1–xS/CdTe and CdxPb1–xS/CdSe are calculated to be 3.37 and 2.21%, respectively.
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Acknowledgements
We acknowledge SAIF, Gauhati University, Guwahati (India), for providing PXRD facilities, and SAIF-NEHU, Shillong, Meghalaya (India) for TEM, HRTEM and SAED facilities. We acknowledge the CSIC, Dibrugarh University, Dibrugarh (India), for providing the SEM and EDX facilities, and SAIC, Tezpur University (India), for supplying FTIR facilities. We also acknowledge the Department of Chemistry, Dibrugarh University, Dibrugarh (India), for Source Meter facility to record I–V characteristics.
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Gogoi, L., Gogoi, J., Chetia, R. et al. Role of concentration on CdxPb1–xS thin films: synthesis, characterization and photovoltaic cells properties. Bull Mater Sci 45, 220 (2022). https://doi.org/10.1007/s12034-022-02801-6
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DOI: https://doi.org/10.1007/s12034-022-02801-6