Abstract Eu2+/Sm3+ co-doped dual-emitting Sr4La(PO4)3O phosphors were synthesized through a convenient high temperature solid state reaction in reductive atmosphere. The structure, luminescence, energy transfer and temperature-dependent luminescence properties of Eu2+/Sm3+ co-doped Sr4La(PO4)3O phosphors were researched and analyzed in detail. The blue emission of Eu2+ and the red emission of Sm3+ can work together as FIR signals. Based on the different response characteristics of these two ion emissions to temperature, Sr4La(PO4)3O:Eu2+/Sm3+ phosphor achieves the relative sensitivity of 0.48384%/K and a wide range of temperature measurements from room temperature to 573 K. The results reveal that the Sr4La(PO4)3O: Eu2+/Sm3+ phosphor has an application prospect in the field of high temperature optical thermometry. The energy transfer mechanism is proved to be the dipole-dipole interaction between Eu2+ and Sm3+ ions.

中文翻译：

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基于能量转移的双发射Eu2+/Sm3+共掺杂Sr4La(PO4)3O荧光粉的发光和测温特性

摘要 Eu2+/Sm3+ 共掺杂双发射Sr4La(PO4)3O 荧光粉通过在还原气氛中方便的高温固相反应合成。详细研究和分析了Eu2+/Sm3+共掺杂Sr4La(PO4)3O荧光粉的结构、发光、能量转移和随温度变化的发光特性。Eu2+ 的蓝色发射和 Sm3+ 的红色发射可以作为 FIR 信号一起工作。基于这两种离子发射对温度的不同响应特性，Sr4La(PO4)3O:Eu2+/Sm3+ 荧光粉实现了 0.48384%/K 的相对灵敏度和从室温到 573 K 的宽范围温度测量。 结果表明Sr4La(PO4)3O:Eu2+/Sm3+荧光粉在高温光学测温领域具有应用前景。