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Role of magnesium in ZnS structure: Experimental and theoretical investigation
7.K. T. A. Rasoul, N. K. A., and Z. J. S., Int. J. Electrochem. Sci. 8, 5594 (2013).
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Wide band gap semiconductor materials are extending significant applications in electronics and optoelectronics industry. They are showing continued advancement in ultraviolet to infrared LEDs and laser diodes. Likewise the band gap tunability of ZnS with intentional impurities such as Mg and Mn are found useful for optoelectronic devices. Information from literature indicates slight blue shift in the band gapenergy of ZnS by Mgdoping but nevertheless, we report a reasonable red shift (3.48 eV/356 nm to 2.58 eV/480 nm) in ZnSband gapenergy in Mg-ZnS structure. Theoretical model based on first principle theory using local density approximation revealed consistent results on Mg-ZnS structure. Similarly, structural, morphological, optical and electrical properties of the as grown Mg-ZnS were studied by XRD,SEM,FTIR, EDS, UV-Vis Spectrophotometer and Hall measurement techniques.
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