A series of new double perovskite structure CaLaMgTaO₆: Bi³⁺, Eu³⁺ phosphors were synthesized by high-temperature solid-phase method. The crystal structure, luminescence characteristics and temperature sensing performance have been systematically studied. The substitution rule of Bi³⁺ in CLMT and its luminescence characteristics are described. The decay curve of Bi³⁺ further proves the existence of an energy transfer from Bi³⁺ to Eu³⁺. They have different thermal quenching behaviors, and their fluorescence intensity ratio (FIR) parameter has tremendous temperature sensing performance. Under 329 nm ultraviolet excitation, the emission peaks at 408 nm and 614 nm are used as the reference signal, the largest absolute sensitivity is 0.0127 K⁻¹ at 573 K, and the maximum relative sensitivity is 1.33%K⁻¹ at 483 K. This indicates that CaLaMgTaO₆: Bi³⁺, Eu³⁺ is a material with excellent temperature measurement performance and applicability in non-contact optical thermometers.

通过高温固相法合成了一系列新型的钙钛矿结构CaLaMgTaO ₆：Bi ³⁺，Eu ³⁺荧光粉。对晶体结构，发光特性和温度传感性能进行了系统的研究。描述了CLMT中Bi ³⁺的取代规则及其发光特性。Bi ³⁺的衰减曲线进一步证明了从Bi ³⁺到Eu ³⁺的能量转移。它们具有不同的热猝灭行为，并且其荧光强度比（FIR）参数具有出色的温度感应性能。在329 nm紫外线激发下，将408 nm和614 nm处的发射峰用作参考信号， 在573 K时最大绝对灵敏度为0.0127 K ^-1，在483 K时最大相对灵敏度为1.33％K ^-1。这表明CaLaMgTaO ₆：Bi ³⁺，Eu ³⁺是一种具有出色的温度测量性能和在非接触式光学温度计中的适用性的材料。