-5-Sulfono-7-(4-Cloro phenyl azo)-8-Hydroxy Quinoline (SAHQ-Cl) is an organic azo compound. It has amorphous thin film structure for the pristine film and partially crystallizes upon UV irradiation. The effect of UV irradiation on the optical constants of SAHQ-Cl is studied using spectrophotometric measurements in the wavelength range 200–2500 nm. UV irradiation increased the band gap from 2.44 to 2.8 eV, and increased the fluorescence emission intensity. Also, UV irradiation remarkably changed the material dispersion parameters. The nonlinear optical parameters are calculated and found to increase upon increasing UV irradiation time. The chromaticity diagram of SAHQ-Cl showed that it can give green color emission.
Journal of Materials Science: Materials in Electronics – Springer Journals
Published: Jun 5, 2018
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