Photoluminescence of a novel red emitting phosphor LiLaMgWO6 : Eu3+

Resumo

A novel red-emitting phosphor LiLaMgWO₆ : Eu³⁺ has been synthesized by a high-temperature solid-state reaction. X-ray powder diffraction (XRD) analysis and FT-IR spectra confirmed the formation of LiLaMgWO₆ : Eu³⁺ phase. The photoluminescence excitation and emission spectra, the concentration dependence of the emission intensity, decay curves, and UV–Vis absorption spectra of the phosphor were obtained. The phosphor could be efficiently excited by the near ultraviolet (NUV) and blue light, exhibiting red light emission. The decay time was also determined for various Eu³⁺ concentrations in LiLaMgWO₆. The calculated color coordinates of the emitted light lie in the red region. Therefore, the obtained results suggest that the prepared phosphors exhibit great potential for use as red emitting phosphor for white light emitting diodes.