Abstract
A novel red-emitting phosphor Sr7Zr(PO4)6:Eu3+ has been synthesised by a high-temperature solid-state reaction. X-ray powder diffraction (XRD) analysis and FT-IR spectra confirmed the phase formation of Sr7Zr(PO4)6:Eu3+ materials. The photoluminescence excitation and emission spectra, the concentration dependence of the emission intensity, decay curves, and ultraviolet–visible absorption spectroscopy of the phosphor were investigated. The results showed that the phosphor could be efficiently excited by the near ultraviolet (NUV) light region from 350 to 450nm, and it exhibited red light emission. The decay time was also determined for various concentrations of Eu3+ in Sr7Zr(PO4)6. The calculated color coordinates lies in the red region. Therefore, these obtained results suggest that the prepared phosphors exhibit great potential for use as red emitting phosphor for near ultraviolet white light emitting diodes (NUV WLEDs).
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