Abstract
In this report, structure, morphology and luminescent studies of Y2O3:Dy3+ phosphors prepared by solid sate reaction method are presented. With this simple and cost effective method, phosphor with desired phase composition can be obtained by mixing appropriate amounts of yttrium and dysprosium oxide. A set of samples is prepared with different Dy3+ concentrations in order to observe changes in luminescent properties. For all samples, XRD pattern showed that prepared phosphors have cubic structure,the crystallite size of the phosphors was calculated from the full width half maxima of the diffraction peaks by using Scherer formula equation and is approximated to be 143.1 nm. SEM analysis showed the nanocrystalline size of 110 nm. The SEM gives the agglomerated fluffy nature of prepared phosphor. FTIR confirms the characteristics vibrational mode Dy-O bonding. The variation of PL characteristics with varying concentration(0.5,1,1.5 and 2 mol%) of Dy3+ is analyzed .The optical absorption band spectra is measured in range 200 to 500 nm.
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