Y(P,V)O4:Dy3+ phosphors for white light generation: Emission dynamics and host effect

The structural characteristics and optical spectra of Y(P,V)O4:Dy3+phosphors obtained by solid state reaction, sol–gel and hydrothermal routes have been investigated and compared. The luminescence features of these materials show a complicate dependence on the composition, synthetic method and excitation conditions. The emission performance depends on different effects: host luminescence, energy transfer to the doping ions and host dependence of the Dy3+ emission properties. These effects have been rationalized in order to provide useful information for the development of a suitable material for the white light emitting phosphors technology.

The relative intensities of the emission features and the color of the luminescence vary with the host composition along the Y(PxV1−x)O4:Dy3+ system.Figure optionsDownload as PowerPoint slideHighlights
► Dy3+:Y(P,V)O4 phosphors have been synthesized by means of three different methods.
► The effect of the synthesis procedure on the emission performance has been studied.
► The conditions for white light generation have been explored.
► The effects of the host composition on the emission dynamics have been investigated.