Synthesis, crystal growth and characterization of semi-organic NLO materials: L-valine copper chloride as optoelectronic sensor

Abstract

Good quality single crystals of L-valine copper chloride were grown by slow evaporation solution growth technique with different concentrations (0.25, 0.50, 0.75 and 1.0 mol). Single-crystal X-ray diffraction technique reveals that the grown single crystals were crystallized in the monoclinic structure. Kurtz powder technique was used to test the nonlinear optical (NLO) activity of the samples which are semi-organic in nature. The optical properties of the crystals were investigated by UV–Vis absorption spectroscopy. The results revealed that the wider bandgap and large transparency in the visible region along with higher polarizability of the grown crystals are highly useful in optoelectronic sensors. The high transmittance and the low absorbance and reflectance of the material over a wide range of wavelength suggest that the material can be used as anti-reflection coating in solar thermal devices and nonlinear applications.