Ultrasensitive Colorimetric Luminescence Thermometry by Progressive Phase Transition.

ABSTRACT: Luminescent materials that display quick spectral responses to thermal stimuli have attracted pervasive attention in sensing technologies. Herein, a programmable luminescence color switching in lanthanide-doped LiYO₂ under thermal stimuli, based on deliberate control of the monoclinic (β) to tetragonal (α) phase transition in the crystal lattice, is reported. Specifically, a lanthanide-doping (Ln³⁺ ) approach to fine-tune the phase-transition temperature in a wide range from 294 to 359 K is developed. Accordingly, an array of Ln³⁺ -doped LiYO₂ crystals that exhibit progressive phase transition, and thus sequential color switching at gradually increasing temperatures, is constructed. The tunable optical response to thermal stimuli is harnessed for

SUBMITTER: Suo H 

PROVIDER: S-EPMC10870082 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature