Article ID Journal Published Year Pages File Type
5400207 Journal of Luminescence 2014 6 Pages PDF
Abstract
Potassium yttrium double vanadates (K3Y(VO4)2) doped with Bi3+ or Dy3+ and codoped with Bi3+ and Dy3+ have been synthesized by solid state reactions at 1000 °C for 48 h and their photoluminescence properties investigated. Efficient energy transfer from the vanadate (VO43−) group or bismuth ions to the rare earth ion has been established by photoluminescence investigation upon UV excitation and results in blue and yellow emissions at 480-489 nm and 572-580 nm respectively. The codoping of Bi3+ and Dy3+ into K3Y(VO4)2 results in enhanced yellow emission band while the blue emission band remains relatively unchanged. The intensities of emission for the studied materials were investigated as a function of different Bi3+ and Dy3+ ion concentrations. The presented results show K3Y(VO4)2 phosphors as potential candidates W-LEDs applications.
Related Topics
Physical Sciences and Engineering Chemistry Physical and Theoretical Chemistry
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