Upconversion luminescence and temperature sensing characteristics of Yb<sup>3+</sup>/Tm<sup>3+</sup>:KLa(MoO<sub>4</sub>)<sub>2</sub>phosphors
Yuhong Zhang, Bo Wang, Yunhe Liu, Guang-Yao Bai, Zuoling Fu, Hang Liu
Abstract
Yb3+/Tm3+ codoped KLa(MoO4)2 phosphors are synthesized by a hydrothermal method. Under 980 nm excitation, the upconversion (UC) emission spectra of the phosphors are observed. The temperature sensing characteristic based on the fluorescence intensity ratio is studied. The maximum sensitivity reaches 2.93% K-1 at 453 K. The sensitivity value of non-thermally coupled levels is higher than that of thermally coupled levels. The results indicate that the KLa(MoO4)2:Yb3+/Tm3+ phosphor could be used in temperature sensors.
Topics & Concepts
PhosphorLuminescenceMaterials sciencePhoton upconversionAnalytical Chemistry (journal)RadiochemistryChemistryOptoelectronicsChromatographyLuminescence Properties of Advanced MaterialsPerovskite Materials and ApplicationsRadiation Detection and Scintillator Technologies