Effect of sodium chloride on the properties of ZTS single crystals

Single crystals of zinc tris thiourea sulphate (ZTS) and sodium chloride (NaCl) doped zinc tris thiourea sulphate, a semiorganic nonlinear optical material were successfully grown from aqueous solution by the slow evaporation technique at room temperature. The structural, optical and thermal properties of grown crystals were studied. Structural analysis was carried out by X-ray diffractometer and observed that the grown crystals belong to orthorhombic system. Fourier transform infrared spectrum was obtained to confirm the functional groups. Thermal behaviour of the grown crystals was investigated by TGA and DSC. Second harmonic generation (SHG) efficiency measurements of Pure and NaCl doped ZTS single crystals were carried out by Kurtz powder technique. The UV–visible spectrum showed that the material possessed wide transparency in the entire visible region. The Vicker’s microhardness number was found to increase with the increased sodium chloride substitution.