Analysis of the growth and physicochemical properties of the newly developed stilbazolium derivative 4-<i>N</i>,<i>N</i>-dimethylamino-4-<i>N</i>-methyl stilbazolium 2-formyl benzene sulfonate (DSFS) single crystal: an effective material for nonlinear optical applications
Anand Sekar, M. Usha Rani, S. Kalainathan, Ravi Shanker Babu
Abstract
Fourier transform infrared (FTIR) spectroscopy. Linear optical constants such as cut-off wavelength, bandgap, extinction coefficient, Urbach energy, electrical conductivity and optical conductivity of the titular crystal were found from ultraviolet-visible-near infra-red spectroscopy (UV-Vis-NIR). The emission wavelength of the title crystal lies in the red region (620 nm), which was confirmed from the photoluminescence spectroscopy (PL). The surface nature of the grown ionic crystal was examined through the etching and atomic force microscopy (AFM) technique. With a He-Ne laser as the source, Z scan analysis was carried out to study the third-order nonlinear properties of the DSFS crystal.