Abstract
Urotropine p–nitrophenol (UTPN), a potential organic nonlinear optical material was grown by solution growth technique using methanol-water solvent. The triclinic crystal system with non-centrosymmetric space group P1 of the grown crystal has been confirmed via single crystal X-ray diffraction analysis. The FTIR study confirms the functional groups present in the grown UTPN crystal. The linear optical behavior such as refractive index, complex dielectric constants and optical conductivity has been inspected through UV–vis–NIR spectrum. Optical band gap is found to be 3.02 eV. The luminescence property of the grown crystal was analyzed by photoluminescence spectroscopy. Kurtz-Perry powder technique is used to estimate the second harmonic generation efficiency of UTPN and is found to be 4.6 times superior to KDP crystal. Laser damage threshold value of the grown crystal is investigated by using 1064 nm Nd:YAG laser. The thermal stability of UTPN has been studied by thermo gravimetric and differential thermal analysis. This forms the properness of the grown UTPN crystal for potential nonlinear optical applications.
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