中文摘要：

采用微波辅助共沉淀法制备紫外发射荧光粉Sr1-xCO3：xCe^3＋，并利用扫描电镜、激光粒度测试、X射线衍射和荧光光谱等分析手段分别对样品SrCO3：Ce^3＋的形貌、粒径、物相和发光性能进行表征。结果表明：掺杂Ce^3＋作为发光中心进入到纯斜方晶系碳酸锶晶格中。没有导致晶体结构的变化；样品呈类球状分布，粒径范围3—8μm。中值粒径也萨5．518μm；以254、327nm波长激发均产生峰值位于354、378nm的宽发射谱带，位于近紫外发射区，可以应用于黑光灯等；随着Ce^3＋离子掺杂浓度的增大，发光强度先增加后减小，其淬灭浓度为1．5％（摩尔分数）；根据Dexter理论得出样品的浓度猝灭机理为电偶极-四极相互作用。

英文摘要：

The Ce^3＋-doped strontium carbonate phosphor was synthesized via co-precipitation route by microwave assisted. The phosphor powders were characterized by scanning electron microscopy （SEM）, laser particle size analyzer, X ray diffraction （XRD） and photoluminescence and photoluminescence excitation （PL-PLE） spectrum. The results showed that Ce^3＋acted as a luminescent center probe into the single orthorhombic phase SrCO~ not result in the crystal structure changed. The sample particles were in approximate spherical structure with size of 3-8 μm, median diameter d50=5.518 μm. Under the 254, 327 nm ultraviolet lamp, the PL spectrum showed a broadband absorption center in 354, 378 nm, which located in near ultraviolet emitting region and could be used in black light lamps etc.The luminescent intensities increased with the increasing Ce^3＋ concentration, and then decreased because of concentration quenching. The optimal concentration of Ce^3＋ was 1.5% （molar fraction）. The concentration self-quenching mechanism was electric dipole-quadruple interactions.