Y<sub>2</sub>Mo<sub>4</sub>O<sub>15</sub>:Er<sup>3+</sup>/Tm<sup>3+</sup>/Yb<sup>3+</sup> Nanophosphors for High-Sensitivity Optical Temperature Sensing.
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ABSTRACT: Noncontact optical nanothermometers are increasingly recognized for their high temperature resolution (δT), excellent relative thermal sensitivity (Sr > 1% K-1), rapid response times (t < 0.1 s), and robust long-term optical stability. In this study, upconversion nanoparticles (UCNPs) based on Y2Mo4O15 nanophosphors, codoped with 2% Er3+, 1% Tm3+, and x% Yb3+ (x = 5, 10, 15 and 20%), were synthesized using the sol-gel method. The crystal structure, morphology, luminescence mechanisms, and temperature-sensing capabilities of these nanoparticles were systematically characterized. Under 975 nm laser excitation, the UCNPs exhibited intense upconversion luminescence, with emission peaks corresponding to well
SUBMITTER: Ben Amar N
PROVIDER: S-EPMC12418729 | biostudies-literature | 2025 Sep
REPOSITORIES: biostudies-literature
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