Effect of dyes on the growth, structural, morphological, optical, mechanical and dielectric properties of Sulphamic acid single crystal

Sulphamic Acid (SA) and methyl orange, methylene blue, Nile blue, crystal violet and trypan blue dye doped Sulphamic Acid single crystals were grown using slow evaporation solution growth method to tune the structural, optical and mechanical properties of the crystal. The theoretical morphology of the grown pure and dye-doped crystals was drawn using Bravais–Friedel–Donnay–Harker (BFDH) law. Morphological changes have been observed in SA crystal when doped with selected dyes. The powder X-ray diffraction patterns of the dye-doped SA crystals have been analyzed and the shift in the peak position has been identified. The slight variations in the unit cell parameters of dye-doped SA crystals have been observed. The transparency of the pure SA and dye-doped SA crystals is suited for optical applications. Micro-hardness study reveals that hardness value increased with an increase in load for all pure and dye-doped crystals. The dielectric and photoluminescence studies of pure and doped crystals were analyzed. The photoluminescence study indicated that doping causes a small shift in peak location, as well as changes in peak intensities.