Photomodulated cryogenic temperature sensing through photochromic reaction in Na0.5Bi2.5Ta2O9: Er/Yb multicolour upconversion

Peng Li, Zhen Zhang, Ziyi Xu, Haiqin Sun, Qiwei Zhang & Xihong Hao
Optical temperature sensing of the non-thermally coupled energy levels (N-TCLs) based on fluorescence intensity ratio (FIR) technologies has excellent temperature sensitivity and signal recognition properties. In this study, a novel strategy is established to enhance the low-temperature sensing properties by controlling photochromic reaction process in Na0.5Bi2.5Ta2O9: Er/Yb samples. The maximum relative sensitivity reaches up to 5.99% K-1 at cryogenic temperature of 153 K. After irradiation with commercial laser of 405 nm for 30 s, the...
This data repository is not currently reporting usage information. For information on how your repository can submit usage information, please see our documentation.