Upconversion luminescence and thermosensitive properties of NaGd(PO₃)₄:Yb³⁺/Er³.

ABSTRACT: High-sensitivity optical temperature measurement has attracted extensive attention in both fundamental studies and practical applications. In this study, a series of upconversion (UC) luminescence phosphors composed of NaGd(PO₃)₄ (NGP) doped with 20 at% Yb³⁺ and various concentrations of Er³⁺ (0.5 at% as the optimal concentration) was synthesized by high-temperature solid-state method. And their crystal structure and the distribution of lanthanide dopants were analyzed using X-ray diffraction with Rietveld refinement verifies. Under 980 nm laser excitation, the obtained phosphors show the characteristic Er³⁺ upconversion green and red emission bands through two-photon processes. The fluorescence intensity ratio (FIR) based on the therm

SUBMITTER: Xu J 

PROVIDER: S-EPMC11566698 | biostudies-literature | 2024 Nov

REPOSITORIES: biostudies-literature