A. Rout, S. Agrawal
National Institute of Technology Raipur,
Keywords: phosphors, photo luminescence, chromaticity
Summary:This paper reports the effect of erbium ions on the photo luminescence behaviour of yttrium strontium silicate nano phosphors synthesized by solution combustion method. The scanning electron microscopy (SEM) shows spheroidal morphology of the grains with grain size in nanometre range. The photoluminescence (PL) study show sharp emission peaks at spectral range 500 - 550 nm under wide range of UV excitation 220 – 400 nm corresponding to electric dipole transition of erbium ions. The Commission International de I’Eclairage (CIE) chromaticity diagram shows a good agreement with NTSC value showing cool emission in green region.