Preparation and luminescent properties of Sr<inf>2</inf>(P<inf>2</inf>O<inf>7</inf>):Tb^3&#x002B;, Ce^3&#x002B;

Abstract

We have successfully prepared the luminescent material of Sr ₂ (P ₂ O ₇ ):Ce ³⁺ , Tb ³⁺ by the method of the chemical co-precipitation. The phase structure, surface morphology and fluorescence properties were investigated by the scanning electronic microscopy (SEM), X-ray diffraction (XRD), and photoluminescence (PL). It showed that the luminescent material is composed of the pure Sr ₂ (P ₂ O ₇ ) phase, and there no phases of rare earth phosphate appeared. The SEM micrographs showed uniform particles with good crystallinity of luminescent material synthesized at 1100°C. PL spectrum showed the luminescent material fluorescence effect best with n _Sr : n _Tb = 100: 1, n _Tb : n _Ce =2:3, sintering at 1100°C, the optimal heat preservation time was 3h.