CaSnO₃: Pr³⁺ phosphor for new application in temperature sensing was investigated. CaSnO₃: 0.3%Pr³⁺ had distorted orthorhombic perovskite structure and Pr³⁺ occupied Ca²⁺ sites due to their similar ionic radii. CaSnO₃: 0.3%Pr³⁺ had spherical particles with mean size of 0.816 μm. The electric dipole−dipole interaction could explain the concentration quenching mechanism. The chromaticity coordinates were (0.1324, 0.3847), located in greenish-blue region and the average afterglow decay time was 60.2 s for CaSnO₃: 0.15%Pr³⁺, which had potential applications for LED and emergency lighting. CaSnO₃: 0.3%Pr³⁺ had the activated energy of 0.380 eV. The maximum relative temperature sensitivity for CaSnO₃: 0.3%Pr³⁺ was 7.57% K⁻¹ at 298 K and relative sensitivity was as high as 6722.76/T² K⁻¹, which was better than that of most Pr³⁺ doped phosphors and had potential application in temperature sensing. Moreover, the possible luminescence and long afterglow mechanisms and thermal quenching process of ³P₀ level through IVCT state were proposed.

研究了CaSnO ₃：Pr ³⁺荧光粉在温度传感领域的新应用。CaSnO ₃：0.3％Pr ³⁺具有畸变的正交晶钙钛矿结构，并且由于其相似的离子半径，Pr ³⁺占据了Ca ²⁺位点。CaSnO ₃：0.3％Pr ³⁺具有球形颗粒，平均尺寸为0.816μm。电偶极-偶极相互作用可以解释浓度猝灭机理。色度坐标是（0.1324，0.3847），位于蓝绿色区域和平均余辉衰变时间为60.2 S代表CASNO ₃：0.15％的Pr ³⁺，在LED和应急照明方面有潜在的应用。CaSnO ₃：0.3％Pr ³⁺的活化能为0.380 eV。CaSnO ₃：0.3％Pr ³⁺的最大相对温度灵敏度在298 K时为7.57％K ^-1，相对灵敏度高达6722.76 / T ²  K ^-1，比大多数掺Pr ^3+的荧光粉更好并在温度感测方面有潜在的应用。此外，提出了通过IVCT状态可能的发光和长余辉机理以及³ P ₀能级的热猝灭过程。