摘 要: 采用高温固相法制备了三基色荧光灯用 BaMgAl₁₀O₁₇:Eu²⁺(BAM:Eu²⁺) 蓝色荧光粉, 考察了烧结时间对 BAM:Eu²⁺ 物相纯度、粉 体颗粒形貌和发光强度的影响。通过 X 射线衍射、扫描电子显微镜和 荧光光谱等表征手段, 研究了样品的物相、形貌和发光强度。结果表 明: 在预烧温度为 500 ℃、烧结温度为 1 550 ℃时, 烧结时间对 BAM: Eu²⁺ 粉体的物相纯度和颗粒形貌没有影响, 但是对 BAM:Eu²⁺ 粉体的 发射光谱强度却有很大的影响。在 254 nm 的紫外线激发下, 随着烧结 时间的延长, 粉体的发射光谱强度提高。 

关键词: 发光材料; 烧结时间; 发光强度

Abstract: BaMgAl₁₀O₁₇:Eu²⁺ (BAM: Eu²⁺) phosphors were synthesized by high temperature solid-state reaction method. H₃BO₃ were chosen as a flux. The phase purity, particle morphology and luminescence properties of the blue phosphor were investigated using the X-ray powder diffrac tion, scanning electron microscopy and photoluminescence spectra. These results indicated that the sintering time had no effect on morphology and phase purity when it was 500 ℃ pre-calcining temperature and 1 550 ℃ sintering temperature. However, the sintering time was in favor of in crease the luminescence intensity of BAM:Eu²⁺. 

Keywords: phosphor; sintering time; luminescence intensity