Dual-mode optical temperature sensing using Dy³⁺/Sm³⁺ co-activated Ba₂ZnSi₂O₇ phosphor with tuneable sensitivity.

ABSTRACT: This study reports the synthesis and characterization of a novel Ba₂ZnSi₂O₇:Dy³⁺, Sm³⁺ phosphor designed for optical temperature sensing applications. The material was successfully prepared using a high-temperature solid-state reaction method. X-ray diffraction (XRD) confirmed a monoclinic crystal structure with high phase purity. Photoluminescence (PL) spectroscopy identified 1 mol% Sm³⁺ as the optimal doping concentration for efficient luminescence, and significant energy transfer from Dy³⁺ to Sm³⁺ was observed and quantified. Diffuse reflectance spectroscopy (DRS) indicated a widened bandgap due to a shift in the conduction band upon co-doping. Scanning electron microscopy (SEM) revealed an agglomera

SUBMITTER: Tejas 

PROVIDER: S-EPMC12908135 | biostudies-literature | 2026 Feb

REPOSITORIES: biostudies-literature