Influence of glycine on the nonlinear optical (NLO) properties of zinc (tris) thiourea sulfate (ZTS) single crystal

Zinc (tris) thiourea sulfate (ZTS) is promising semi organic nonlinear material in the field of photonics and optoelectronics. In present investigation amino acid glycine was added in molar percent in under saturated ZTS solution to enhance second harmonic generation (SHG) efficiency. Effect of glycine on SHG efficiency has been studied by Kurtz and Perry powder test. The enhancement of SHG for 1 mol% glycine doped ZTS is large as compared to other molar concentration. Hence, the 1 mol% glycine doped zinc (tris) thiourea sulfate single crystal was grown from aqueous solution by slow evaporation technique. The grown crystal was subjected for various characterizations. FTIR studies have been carried out to identify the functional groups present in the crystal. The effect of glycine on transmittance of grown crystal was studied by UV-visible study. The grown crystal was subjected to powder and single crystal X-ray diffraction. A thermo gravimetric analysis (TGA) and differential scanning calorimetry (DSC) study has also been carried out. (C) 2008 Elsevier B.V. All rights reserved.