Widening the Temperature Range of Luminescent Thermometers through the Intra‐ and Interconfigurational Transitions of Pr3+

Carlos D. S. Brites; Karolina Fiaczyk; João F. C. B. Ramalho; Małgorzata Sójka; Luís D. Carlos; Eugeniusz Zych

文献索引：10.1002/adom.201701318

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摘要

In this study, it is shown how the temperature range of luminescent thermometers can be widened in an unprecedented way by combining the intra‐ and interconfigurational transitions of the Pr3+ ion in a single material. Using Sr2GeO4:Pr3+ crystalline powders as an illustrative example, the implementation of luminescence thermometry is reported in the broadest temperature range up to now (17–600 K) with a remarkable performance: maximum relative sensitivity values of 9.0% · K−1 (at 22 K, cryogenic range), 0.6% · K−1 (at 300 K, physiological range), and 0.5% · K−1 (at 600 K, high‐temperature range) and minimum temperature uncertainty of 0.1 K.