Synthesis and Photoluminescence Properties of Novel Sr2La8(SiO4)6O2:Eu3+ Oxyapatite Phosphors

Аннотация

A novel red-emitting phosphor Sr₂La₈(SiO₄)₆O₂:Eu³⁺ was synthesized by high-temperature solid-state reaction method.  X-ray powder diffraction  (XRD) analysis confirmed the formation of Sr₂La₈(SiO₄)₆O₂:Eu³⁺ phase. The photoluminescence excitation (PLE) and emission (PL) spectra show that the phosphor can be efficiently excited by near ultraviolet (NUV) and blue light, and emits red light. The phosphor demonstrates much higher quantum efficiency, and its color coordinates lie in the red region. All results in the present work suggest that the prepared phosphors have potential application as red emitting phosphors for near ultraviolet white light emitting diodes (NUV WLEDs).