International Journal of Science, Engineering and TechnologyStudy of the Structural, Morphological, Vibrational & Optical Properties of Synthesized Eu3+-Doped ZnS Nanocrystals
Authors- Sanjay Kumar Dubey, A. K. Jaiswal
Abstract- Here, we have reported that the structural, morphological, elemental composition, vibrational & Optical properties of the synthesized ZnS: Eu3+ nanocrystals. X-ray diffraction (XRD), Scanning electron microscope (SEM), Photoluminescence (PL) and Fourier transform infrared spectroscope (FTIR) studies have been done on all these samples. XRD patterns have clearly shown the cubic phase structure is present. The crystallite sizes of these nanoparticles were calculated using the Scherrer’s equation and our estimated average crystallite size is 6.5 nm. The size of particle determined from the TEM image is close to the calculated value from XRD. In FESEM, Average particle size is found 5.5 nm. In EDS Spectra, the above figures confirm the presence of Zn, S, and Eu. No traces of other elements were noticed in the spectra indicating the purity of the samples. The role of dopant concentration of ZnS: Eu3+ nanocrystals and their photoluminescence properties are well investigated. It is found that photoluminescence properties are sensitive to the crystal structure which is controlled by dopant concentration. The emission intensity of the peak at 617 nm (5D0-7F2) of the Eu3+-ions is found to be sensitive to the doping of ZnS nanocrystals. In this present article, X-ray diffraction (XRD), Scanning electron microscope (SEM), HRTEM, EDS, Photoluminescence (PL) and Fourier transform infrared spectroscopy (FTIR) properties have been investigated in detail.
