Structural and Photo electrochemical (PEC) cell properties of ????????????−???????????????????????? Films

In the present paper Cadmium zinc selenide (????????1−????????????????????????) ternary alloy compounds were prepared on glass substrates for various ???? concentration by electron beam evaporation method (PVD: EBE) under a pressure of 1????10−5mbar. Structural, spectral response and photo electrochemical properties of ????????1−???????????????????????? films have been studied in the present work.. Structural studies by X-ray diffractogram (XRD) reveals the polycrystalline nature of the as-prepared films. Full Width Half Maximum (FWHM) value observed from the XRD pattern and the same used to find the microstructure properties of the films. XRD characterization of the films indicates the hexagonal structure with strong preferential orientation of the crystallites along (0 0 2) direction. The normalized spectral response curve shows that the peaks were shifted to higher wavelength side with incorporation of higher zinc content into the CdSe lattice. The analysis of I-V curve for Cd0.8Zn0.2Se films gives the highest values for VOC, ISC, FF and %. Conversion efficiency was continuously decreasing with zinc content ???? = 0.2 to 0.8 from 4.5 to 1.93 respectively.