Wydział Chemii

Teng Zheng

Małgorzata Sójka

Przemysław Woźny

Inocencio R. Martín

Víctor Lavín

Eugeniusz Zych

Stefan Lis

Peng Du

Laihui Luo

Marcin Runowski

2022

Advanced Optical Materials

10

2201055/1-2201055/10

10.1002/adom.202201055

Naukowa

Angielski

Artykuł

The concept of optical temperature sensing using band intensity ratio is considered as one of the most effective, self-reference, non-invasive, and rapid detection techniques for the local temperature in natural or engineered systems. In this work, for the first time a divalent lanthanide-co-doped dual-center system, i.e., SrB₄O₇:Eu²⁺/Sm²⁺ phosphors, working as a bifunctional ratiometric sensor of temperature and pressure is employed. With temperature alterations, the Eu²⁺/Sm²⁺ luminescence intensity ratio and the emission lifetime of Sm²⁺ are significantly changed, showing unprecedentedly high relative sensitivity of 45.6 and 3.17% K^-1, respectively. Moreover, in the pressure range from ≈10 to 40 GPa, the intensity ratio of the Eu²⁺/Sm²⁺ emissions shows strong pressure dependence and can be utilized for pressure monitoring, with high pressure relative sensitivity of ≈13.8% GPa^-1. The superior performance indicates that the developed dual-center Eu²⁺/Sm²⁺-co-doped SrB₄O₇ phosphors are promising candidates for supersensitive optical sensing applications. The findings open a new approach of designing optical temperature and pressure sensors.

CC-BY

http://dx.doi.org/10.1002/adom.202201055

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