Optical properties

Synthesis and testing of BaZrGe$_3$O$_9$ : Mn$^{4+}$ for application as a red-emitting phosphor

X. Wang^a, M. Zhai^a, K. V. Ivanovskikh^b, H. Guo^a, P. Huang^a, C. Cui^a, L. Wang^a, Q. Shi<sup>a

a</sup> College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan, 030024 China
^b Department of Experimental Physics, Ural Federal University, Ekaterinburg, 620002 Russia

Abstract: A series of novel red-emitting phosphors BaZrGe$_3$O$_9$ : Mn$^{4+}$ (BZG : Mn$^{4+}$) were synthesized through high-temperature solid-state reaction method in order to explore their capabilities for application as red-emitting phosphors. The phosphors were characterized by X-ray diffraction, photoluminescence spectra, and decay curve measurements at the temperature ranging from 80 to 500 K. The luminescence intensity increases to maximum at doping concentration of 0.2 mol.%, and then decreases with concentration. Serious thermal quenching was also revealed.

Keywords: red-emitting phosphor, germanate, Mn$^{4+}$, concentration quenching, thermal stability.

Received: 16.06.2022
Revised: 16.06.2022
Accepted: 16.06.2022

Language: English