Studies on the Optical and Electrical Properties of 4-Methoxybenzoin NLO Single Crystal
Current Journal of Applied Science and Technology · pp. 340–349 · Published 3 Mar 2013
10.9734/BJAST/2014/2587Abstract
Organic nonlinear optical single crystals of 4-methoxy benzoin were grown by slow evaporation technique. The X-ray diffraction analysis revealed that 4-methoxy benzoin single crystals belong to orthorhombic crystal system with a space group Pca21.Optical absorption range of the grown crystal was measured by UV-VIS-NIR spectrophotometer. The optical absorbance spectrum of 4-methoxy benzoin crystal has been used to calculate the optical band gap (Eg), absorption coefficient (α), refractive index (n), and the real (εr) and imaginary (εi) components of the dielectric constant. The DC electrical conductivity measurements were carried out for the crystals using the conventional two – probe technique. The conductivity study indicates that the DC conductivity of the samples increase with the increase in temperature. The activation energies were also calculated from DC conductivity studies. Photoconductivity measurements carried out on the grown crystal reveal the negative photoconducting nature.
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