A series of Eu3+-doped Ca3La7(SiO4)5(PO4)O2 (CLSPO) multifunctional phosphors were synthesized by a high-temperature solid-state reaction method. The crystal structure of the CLSPO host was explored using Rietveld refinement. The photoluminescence properties of CLSPO: Eu3+ phosphors were investigated systematically. Upon 392 nm near-ultraviolet light excitation, the phosphor exhibited strong characteristic emissions of Eu3+ ions with a dominant red emission peak around 613 nm, indicating its potential use in solid-state lighting. Calculations of Ω2 and Ω4 Judde-Ofelt intensity parameters provided insight into the structure-luminescence correlation in the CLSPO: Eu3+ system. By exploring the temperature sensitivity of photoluminescence intensity, the application potential of the sample to optical thermometry was studied.

中文翻译：

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Eu3 +掺杂的Ca3La7（SiO4）5（PO4）O2发光材料的光致发光特性，Judd-Ofelt分析和光学温度感测。

通过高温固相反应法合成了一系列Eu3 +掺杂的Ca3La7（SiO4）5（PO4）O2（CLSPO）多功能荧光粉。使用Rietveld精修技术探索了CLSPO主体的晶体结构。系统研究了CLSPO：Eu3 +荧光粉的光致发光特性。在392 nm的近紫外光激发下，磷光体表现出较强的Eu3 +离子特征发射，其主要红色发射峰在613 nm附近，表明其在固态照明中的潜在用途。Ω2和Ω4Judde-Ofelt强度参数的计算提供了对CLSPO：Eu3 +系统中结构-发光相关性的深入了解。通过探索光致发光强度的温度敏感性，研究了样品在光学测温中的应用潜力。