Highly sensitive optical temperature sensing based on pump-power-dependent upconversion luminescence in LiZnPO₄:Yb³⁺-Er³⁺/Ho³⁺ phosphors.

ABSTRACT: In this work, various LiZnPO₄:0.5 mol% Ln³⁺ (Ln = Ho, Er) phosphors with different Yb³⁺ ion doping concentrations were synthesized by a sol-gel/Pechini method. X-ray diffraction (XRD) and scanning electron microscope (SEM) techniques were used to evaluate the phase and morphology of the samples. The UC process was mentioned as the typical emission peaks of Er³⁺ and Ho³⁺. For Er³⁺ and Ho³⁺, different optical temperature sensing methods are included. The Boltzmann distribution was accompanied by the fluorescence intensity ratio (FIR) for the two green Er³⁺ emissions originating from thermally-coupled levels. The effect of pump power on sensor sensitivities was extensively studied. The temperature uncertai

SUBMITTER: Saidi K 

PROVIDER: S-EPMC9041328 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature