Structure, spectral, electrical, and second harmonic generation studies of Fe3+ doped MnS single crystals

Abstract In this present work, we report the growth, optical, and electrical studies of inorganic single crystals of manganese sulfate and FeCl3-doped manganese sulfate grown by slow evaporation technique. Crystal structure and lattice parameters of the grown crystals were determined using powder X-ray diffraction and the studies confirm the formation of orthorhombic structure. The UV–vis spectroscopic measurement illustrates the grown crystals with good optical transparency in the visible region and less absorbance. Optical constants such as the band gap, refractive index, extinction coefficient, optical and electrical conductance reveals the good optical response of the material. The Fourier transform infrared spectroscopic analysis infers that there is a small change in the peak position and transmittance in the case of MnS:Fe3+ crystal which ensures the incorporation of Fe3+ ion to the host crystal. Second harmonic generation efficiency tested by Kurtz and Perry method showed the improvement in relative conversion efficiency compared with potassium dihydrogen phosphate.