The high-temperature solid-phase method was used in this research to construct a series of β-Ca₃(PO₄)₂-type Sr₈ZnIn_(1-m)Lu_m(PO₄)₇:xEu²⁺, yMn²⁺ (m = 0 – 1.0) phosphors. By varying the ratio of In/Lu, it was possible to achieve thermal stability and controlled tuning of the phosphor emission spectrum. The single-phase white phosphor Sr₈ZnIn_0.6Lu_0.4(PO₄)₇:0.02Eu²⁺, 0.05Mn²⁺ was produced by the doping of Mn²⁺, which encouraged the Eu²⁺ at various cation sites for rearrangement and produced customizable emission colors ranging from blue-green to orange-red. Finally, using its superior thermal stability, the FIR approach was used to construct an optical temperature sensor. The maximum relative sensitivity (S_r) and absolute sensitivity (S_a) of a typical sample reached 3.27% K^-1 and 0.226 K^-1, respectively. At an operating current of 600 mA, the white light-emitting diodes based on Sr₈ZnIn_0.6Lu_0.4(PO₄)₇:0.02Eu²⁺, 0.05Mn²⁺ phosphors produced high-quality warm-white light with an excellent color rendering index (88.3) and an appropriate correlation color temperature (4522 K). Meanwhile, a series of snowflake patterns with temperature-dependent characteristics were prepared using it. From the dynamic color change, it can be seen that the material can retain information at different temperatures, thus realizing dynamic anti-counterfeiting. These findings demonstrate that a variety of uses for this phosphor series are possible.

中文翻译：

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Sr8ZnIn（1-m）Lum（PO4）7：Eu2+/Mn2+ 通过热稳定性调节、频谱调谐和谐振能量转移的多种应用

本研究采用高温固相法构建了一系列 β-Ca₃（PO₄）₂ 型 Sr₈ZnIn_（1-m）Lu_m（PO₄）₇：xEu²⁺， yMn²⁺ （m = 0 – 1.0） 荧光粉。通过改变 In/Lu 的比率，可以实现荧光粉发射光谱的热稳定性和受控调谐。单相白色荧光粉 Sr₈ZnIn_0.6Lu_0.4（PO₄）₇：0.02Eu²⁺， 0.05Mn²⁺ 是通过 Mn²⁺ 的掺杂产生的，这促进了 Eu²⁺ 在各种阳离子位点的重排，并产生了从蓝绿色到橙红色的可定制发射颜色。最后，利用其卓越的热稳定性，采用 FIR 方法构建光学温度传感器。典型样品的最大相对灵敏度 （S_r） 和绝对灵敏度 （S_a） 分别达到 3.27% ^K-1 和 0.226 ^K-1。在 600 mA 的工作电流下，基于 Sr₈ZnIn_0.6Lu_0.4（PO₄）₇：0.02Eu²⁺、0.05Mn²⁺ 荧光粉的白光发光二极管产生了高质量的暖白光，具有出色的显色指数 （88.3） 和适当的相关色温 （4522 K）。同时，利用它制备了一系列具有温度依赖性特征的雪花图案。从动态颜色变化可以看出，材料在不同温度下都能保留信息，从而实现动态防伪。 这些发现表明，该荧光粉系列有多种用途。