Abstract

A series of barium tungstate (${\mathrm{BaWO}}_4$) phosphors were synthesized by the solid state reaction method, and the systematic effect of ${\mathrm{Dy}}^{3+}/{\mathrm{Sr}}^{2+}$ doping concentration on the structural and photoluminescence (PL) properties were investigated. X-ray diffraction studies confirm the structure of the phosphors as tetragonal with space group $\mathrm{I}{4}_1/\mathrm{a}$. The PL emission spectra show two peaks in the blue and yellow regions which were tuned to produce near-white emission. The quality of the white light was checked by estimating CIE parameters. This indicates the suitability of barium–tungstate-based phosphors for near-white LED applications.

© 2013 Optical Society of America

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