Abstract A series of Sr9Ga(PO4)7: xDy3+ (x = 0.00 ~ 0.18) phosphors were successfully synthesized via high-temperature solid-phase synthesis. The excitation and emission spectra of Sr9Ga(PO4)7: xDy3+ phosphor due to energy transfer from the Ga–O group to Dy3+ can be detected by excitation at 259 and 482 nm. It is possible to adjust the luminous color from the blue light region to white light region through single-doping Dy3+ in Sr9Ga(PO4)7 matrix, which is applicable for W-LEDs. Based on the temperature-dependent luminescence properties, Sr9Ga(PO4)7: Dy3+ phosphors has excellent thermal stability with absolute sensitivity (Sa) and relative sensitivity (Sr) at 598K of 0.018 K−1 and 0.87%K−1, respectively by the fluorescence intensity ratio (FIR) technology. Therefore, the color tunable phosphor can be used as a thermal sensor in high-temperature environments.

中文翻译：

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用于光学测温传感材料的颜色可调 Dy3+ 掺杂 Sr9Ga(PO4)7 荧光粉

摘要 通过高温固相合成法成功合成了一系列Sr9Ga(PO4)7:xDy3+ (x = 0.00 ~ 0.18)荧光粉。Sr9Ga(PO4)7: xDy3+ 磷光体由于能量从 Ga-O 基团转移到 Dy3+ 的激发和发射光谱可以通过 259 和 482 nm 的激发检测到。通过在 Sr9Ga(PO4)7 矩阵中单掺杂 Dy3+ 可以将发光颜色从蓝光区调整到白光区，适用于 W-LED。基于温度相关的发光特性，Sr9Ga(PO4)7: Dy3+ 荧光粉具有优异的热稳定性，在 598K 时的绝对灵敏度 (Sa) 和相对灵敏度 (Sr) 分别为 0.018 K-1 和 0.87%K-1。荧光强度比 (FIR) 技术。所以，