Studies on Semi-Organic Single Crystal of L-Histidinium Phosphite (LHPI) for Optical, Thermal, Mechanical and NLO Applications

Abstract

A semi-organic nonlinear optical material L- histidinium phosphite (LHPI) was grown as a single crystal using an economic slow evaporation solution growth technique. To determine the structural information i.e., the unit cell parameters, Single Crystal XRD analysis was performed and found that the compound has a monoclinic crystal System with P21 non centrosymmetric space group. Hirshfeld (HF) analysis and a 2-D fingerprint plot have been used to study the intermolecular interaction of the compound. Photoluminescence analysis revealed that the compound has green fluorescence emission. The specific heat of compound was calculated through Differential Scanning Calorimetry (DSC). The Laser damage threshold (LDT) of LHPI is 1.13 and 0.78 GW cm-2 for one and 10 pulse/second respectively. The frequency conversion property of this compound was studied through the Kurtz- Perry powder technique (SHG) and Z-Scan technique. Microhardness studies revealed that LHPI is a hard material. Through Shock Damage Threshold (SDT), the stability of the material against shock wave was assessed, which indicates that no damage appears up to the 5th shock.