Most recently, it has been demonstrated that the use of ³P₀–³H₄/¹D₂-³H₄ intensity ratio of Pr³⁺ transitions is potentially beneficial to luminescence thermometry. In this study, a study is conducted of (Ba_1-xSr_x)TiO₃:0.5%:Pr³⁺ phosphors following Sr²⁺ concentrations range (x = 0–0.5) in terms of luminescence thermometry. Besides, an investigation is carried out into thermoluminescence properties, based on which a discussion is conducted about the potential mechanisms behind the experimental results. It is discovered from Pr³⁺-Ti⁴⁺ that the highly efficient thermometric characteristics contribute significantly to the intervalence charge transfer state. Furthermore, through intervalence charge-transfer engineering, the effective management of their thermometric properties is made achievable due to the Ba²⁺ substitution by Sr²⁺, which makes the range of the highest relative sensitivity controllable. In the meantime, the maximal relative temperature sensitivity of Pr³⁺-doped BaTiO₃ reaches up to 2.77% K⁻¹ at 371 K as measured. This is expected to shed light on the design of one optical thermometer calibrated itself, exhibiting great performance.

最近，已经证实的是，使用³ P ₀ - ³ ħ ₄ / ¹ d ₂ - ³ ħ ₄的Pr强度比³⁺的过渡是发光测温潜在有益的。在这项研究中，对（Ba _1-x Sr _x）TiO ₃：0.5％：Pr ³⁺荧光粉跟随Sr ^{2+进行了研究}发光测温法的浓度范围（x = 0–0.5）。此外，对热致发光性质进行了研究，在此基础上对实验结果背后的潜在机理进行了讨论。从Pr ³⁺ -Ti ⁴⁺发现，高效的测温特性显着地影响了间隔电荷转移状态。此外，通过间隔电荷转移工程，由于Ba ²⁺被Sr ²⁺取代，可以实现对它们的测温特性的有效管理，这使得最高相对灵敏度的范围是可控的。同时，Pr ³⁺的最大相对温度敏感性所测量，掺杂的BaTiO ₃在371 K下达到2.77％K ^-1。预期这将为一个自行校准的光学温度计的设计提供启发，并表现出出色的性能。