SrSnO₃: Pr³⁺ phosphors with red long afterglow (LAG)and temperature sensing were prepared by albumin assisted sol-gel method. The typical sample had cubic structure. The mean particle size was about 2.02 μm. The band gap values of samples were in the range of about 4.06–4.09 eV. The luminescent properties and LAG behaviors of SrSnO₃: Pr³⁺ phosphors were investigated and the luminescence mechanism of red LAG was discussed. Albumin assisted SrSnO₃: Pr³⁺ phosphor with a red long afterglow had an average decay time of 74.25 s. Pr³⁺ ions not only act as an activator, emitting red long afterglow, but also act as a trap provider. Moreover, the temperature sensing property was studied based on the non-thermal coupling FIR of TE and ³P₀→³H₄ transition emission. The relative sensitivity was as high as 3580.89/T². The absolute sensitivity (S_a) and relative sensitivity (S_r) of SrSnO₃: 0.5%Pr³⁺ were 0.0374 K^-1 and 4.03% K⁻¹, respectively. Its optical thermometry performance is better than that of most phosphors. It has the potential to be applied in the field of temperature sensing.

SrSnO ₃：通过白蛋白辅助溶胶-凝胶法制备具有红色长余辉(LAG)和温度传感的Pr ³⁺荧光粉。典型样品具有立方结构。平均粒径约为 2.02 μm。样品的带隙值在大约 4.06-4.09 eV 的范围内。研究了SrSnO ₃ : Pr ³⁺荧光粉的发光特性和LAG行为，讨论了红色LAG的发光机理。白蛋白辅助的 SrSnO ₃：具有红色长余辉的Pr ³⁺磷光体具有 74.25 秒的平均衰减时间。公关³⁺离子不仅充当活化剂，发出红色长余辉，而且充当陷阱提供者。此外，基于TE的非热耦合FIR和³ P ₀ → ³ H ₄跃迁发射研究了温度传感特性。相对灵敏度高达3580.89/T ²。SrSnO ₃ : 0.5%Pr ³⁺的绝对灵敏度（S _a）和相对灵敏度（S _r）分别为0.0374 K ^-1和4.03% K ^-1。其光学测温性能优于大多数荧光粉。它具有在温度传感领域应用的潜力。