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中文摘要：
采用高温固相法制备了Eu^3＋掺杂的KMgLa（PO4）2荧光粉。采用X射线衍射技术及光谱技术研究了材料的晶相及发光特性。研究结果显示,少量的Eu^3＋并未影响KMgLa（PO4）2的晶相;以260 nm紫外光或394 nm近紫外光作为激发源时,KMgLa（PO4）2∶Eu^3＋都发射红色光,主发射峰位于595 nm,对应Eu^3＋的^5D0→^7F2跃迁发射;随着Eu^3＋掺杂量的逐渐增大,对应KMgLa（PO4）2∶Eu^3＋材料的发射强度随之增大,当掺杂量为0.06Eu^3＋时,发射强度最大,且存在浓度猝灭现象,对应的临界距离为1.696 nm;材料的CIE参数显示,材料位于红色区域。
英文摘要：
A series of Eu^3 ＋ doped KMgLa （ PO4 ） 2 were prepared via a high-temperature solid-state method. The phase present of phosphor was characterized by a powder X-ray diffraction（ XRD） , and the spectra of phosphors were measured by the fluorescence spectrophotometer. Under the 260 nm or 394 nm excitation,KMgLa （ PO4 ）2 ： Eu^3 ＋ presents an obvious red emission, and the strongest emission peak locates at 595 nm, which is ascribed to the ^5D0 →^7F2 transition of Eu^3＋. The emission intensity of phosphors can be tuned by changing the Eu3＋ concentration, and the optimal Eu^3＋ doping concentration is 0. 06,and there is the concentration quenching effect of Eu^3＋ in KMgLa （ PO4 ）2,and the critical distance is 1.696 nm. Its CIE chromaticity coordinates located in the red region.
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