Related Experiment Video
Updated: May 6, 2026

Low-energy Cathodoluminescence for OxyNitride Phosphors
Published on: November 15, 2016
Up-conversion luminescence modulation of (KMg)2xSc1.58-2x(MoO4)3: Er3+/Yb3+ phosphors through double cation
Ke Ding1, Haoyue Hao1, Liang Li2
1School of Physics and Optoelectronic Engineering, Shandong University of Technology, Zi Bo 255000, China.
Abstract:
In recent years, negative thermal expansion (NTE) compounds offer a new method to solve the thermally induced luminescence quenching. In this work, the up-conversion emission is obviously improved through double cation substitution in (KMg)2xSc1.58-2x(MoO4)3: 0.01Er3+/0.2Yb3+ phosphors, which also shows anti-thermal quenching behavior. As the (KMg)3+ doping concentration is 0, 0.1, 0.2, 0.3, 0.4, 0.5 and 0.6, the enhancement factor reaches 1, 1.7, 0.3, 0.5, 1.2, 2.5 and 8.9, respectively. The temperature-dependent up-conversion emissions from (KMg)1.2Sc0.38(MoO4)3: 0.01Er3+/0.2Yb3+ phosphors are investigated in the temperature range from 303 to 523 K. As the temperature rises, the emission intensities of all the green emissions increase. Notably, the green emission, located at 520 nm, reaches 3.3 times that at room temperature. The SR of temperature sensing reaches 0.0077 K-1 (303K) based on the temperature-dependent ratio of two green emissions from (KMg)1.2Sc0.38(MoO4)3: 0.01Er3+/0.2Yb3+ phosphors. The temperature resolutions reach 0.19 and 0.38 K at 303 and 523 K, respectively. The anti-thermal quenching and temperature sensing behaviors of (KMg)1.2Sc0.38(MoO4)3: 0.01Er3+/0.2Yb3+ phosphors demonstrate their potential application in optical thermometry.
Related Concept Videos
Photoluminescence: Applications
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Fluorescence and Phosphorescence: Instrumentation
Variables Affecting Phosphorescence and Fluorescence
Deactivation Processes: Jablonski Diagram

