Growth, investigation on optical and luminescence properties of Cd2+ ion-doped 4-N,N-dimethylamino-4′-N′-methylstilbazolium tosylate single crystal for photonic devices

Second-order nonlinear active metal-organic materials of CdSO4 (1 and 3%)-doped DAST (CdS-DAST) single crystals were effectively grown using the low-cost slow evaporation method. The grown crystals have a monoclinic structure with non-centrosymmetric space group Cc, determined using single crystal and X-ray powder diffraction investigation. The presence of metal ions (Cd2+) in the DAST crystal was affirmed using energy-dispersive X-ray analysis. The presence of groups in vibrational modes in the lower frequency region is confirmed by FTIR analysis. Pure's lower cut-off absorbance wavelength is 388 nm, and the CdS dopant crystals are 381, 380 nm and conforming to the n-pi* electronic transition from the ground to excited energy states are examined by UV-Vis-NIR spectrophotometer. Thermal characterization of pure and dopant crystals was also performed by TG/DTA analysis. The photoluminescence spectra show green emission from the crystals at 526 and 527 nm, suggesting upsides for LEDs and laser-tunable devices. Enrichment of nonlinear activity is identified in the CdS-doped DAST crystals, and they have 1.21 and 1.52 times superior SHG than pristine DAST. Eventually, these results illustrate the grown crystal as applicable in developing photonic devices.

Automated summary

Second-order nonlinear active metal-organic CdSO4 (1 and 3%)-doped DAST (CdS-DAST) single crystals were grown using the low-cost slow evaporation method. The crystals have a monoclinic structure with non-centrosymmetric space group Cc, confirmed by crystallography. The presence of Cd2+ ions in the DAST crystal was confirmed by energy-dispersive X-ray analysis. The CdS-doped DAST crystals show enhanced nonlinear activity and higher second harmonic generation (SHG) compared to pristine DAST, making them suitable for developing photonic devices.