A wide temperature range dual-mode luminescence thermometer based on Pr3+-doped Ba(Zr0.16Mg0.28Ta0.56)O3 transparent ceramic

Owing to the impact of robust thermal quenching, lanthanide-based luminescence thermometer operation can usually only be achieved within a comparatively small temperature scope (ambient temperature to 800 K). Here, this study presents a method for addressing the mentioned limits, and a luminescence thermometer with an ultra-wide temperature range has been achieved, which adopted Pr3+-doped Ba(Zr0.16Mg0.28Ta0.56)O-3 transparent ceramic to be the optical temperature probe. Based on the high luminescence intensity and excellent thermal stability of the P-3(0)-F-3(2) hypersensitive transition of Pr3+ in Ba(Zr0.16Mg0.28Ta0.56)O-3 transparent ceramic, the intensity ratio of the emissions at 624 nm and 649 nm was employed for temperature sensing in an ultra-wide range (293-873 K), and the maximal relative sensitivity reached 1.05% K-1, outperforming most existing luminescence temperature measurement transparent ceramics. Furthermore, in Pr3+-doped Ba(Zr0.16Mg0.28Ta0.56)O-3 transparent ceramic, the lifetime of the P-3(0)-H-3(4) transition also exhibits prominent optical thermometry performance (303-873 K). The results presented in this work may be of high significance for the design of novel ratiometric/lifetime dual-mode optical temperature sensors in the high-temperature measurement field.

Automated summary

This study presents a method to address the temperature range limitation of luminescence thermometers, achieving an ultra-wide temperature range luminescence thermometer with high sensitivity. The study demonstrates the use of Pr3+-doped Ba(Zr0.16Mg0.28Ta0.56)O-3 transparent ceramic for optical temperature sensing, showing superior performance compared to existing luminescence temperature measurement ceramics.