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通过室温共沉淀制备了BiPO_4和BiPO_4:Tb~(3+)纳米晶,研究了水热和高温烧结处理对室温合成BiPO_4:Tb~(3+)纳米晶的相结构、形貌以及发光性能的影响。X-射线衍射(XRD)分析显示所有样品均为低温单斜相结构的BiPO_4,并通过透射电镜(TEM)和红外光谱(FT-IR)进一步观察了纳米晶的形貌变化以及纳米晶表面微结构。荧光测试结果表明,在370nm激发下,光谱显示出Tb~(3+)离子的特征跃迁,且以~5D_4→~7F_5跃迁发射(544nm)为主峰。通过进一步优化纳米晶的结晶度、表面吸附水和乙醇等因素对发光性能的影响,获得了最佳的发光性能。
BiPO_4 and BiPO_4: Tb ~ (3+) nanocrystals were prepared by coprecipitation at room temperature. The phase structure, morphology and luminescence properties of BiPO_4: Tb ~ (3+) nanocrystals synthesized at room temperature were investigated by hydrothermal and high temperature sintering. influences. X-ray diffraction (XRD) analysis showed that all the samples were of low temperature monoclinic phase BiPO_4, and the morphologies of the nanocrystals were further observed by transmission electron microscopy (TEM) and infrared spectroscopy (FT-IR) structure. Fluorescence test results show that the characteristic transition of Tb ~ (3+) ion is shown by excitation at 370 nm, and the emission peak (544 nm) is the main peak at ~ 5D_4 → ~ 7F_5 transition. By further optimizing the crystallinity of nanocrystals, the surface adsorption of water and ethanol and other factors on the luminescent properties, the best luminescence properties.