Effect of N-719 Dye Doping in Tri-Glycine Sulphate Single Crystals- A Potential Candidate for Optical Materials

Abstract

Single crystals of Pure Tri-Glycine Sulfate (PTGS) and 0.05 mol% N-719 Dye-Doped Tri-Glycine Sulfate(DTGS) have been successfully grown by slow evaporation solution growth technique. An investigation of dye doping’s effect on structural and optical properties has been investigated. Powder XRD analysis of both PTGS and DTGS confirms the crystal structure and demonstrates very good crystalline quality. The FTIR analysis provides conclusive evidence regarding the existence of multiple functional groups in addition to the incorporation of dye into TGS. The optical and band gap analysis have been carried out using a UV-Visible spectrophotometer. A 270 nm excitation wavelength has been employed to acquire the PL spectra. TGS is a semi-organic material, exhibiting non-linear optical characteristics and depicting good properties in ferroelectricity and pyroelectricity. It is also a good piezoelectric material and can be used as an alternative to other energy sources.