Citation: Xiaokang JIANG, Junliang MA, Yan ZHAO, Feng GAO, Changli LIU, Xingshen ZHAO, Hengwei ZHOU. Preparation and luminescent properties of Sm³⁺-doped La₂MgZrO₆ phosphors[J]. Chinese Journal of Inorganic Chemistry, ;2026, 42(2): 263-270. doi: 10.11862/CJIC.20250236 shu

Preparation and luminescent properties of Sm³⁺-doped La₂MgZrO₆ phosphors

1.
Condensed Phase Transition and Microstructure Laboratory, College of Physics Science and Technology, Yili Normal University, Yining, Xinjiang 835000, China
2.
Xinjiang Institute of Technology, Aksu, Xinjiang 735400, China

Corresponding author: Hengwei ZHOU, zhw33221@163.com
Received Date: 17 July 2025
Revised Date: 4 January 2026

Figures(9)

A series of orange-red phosphors based on La_2(1-x)MgZrO₆:2xSm³⁺ double perovskite (x=0.01-0.11) were successfully synthesized via the sol-gel method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) characterizations confirmed that the as-prepared samples crystallize in a pure double perovskite structure, with Sm³⁺ ions homogeneously dispersed within the La₂MgZrO₆ host lattice without detectable impurity phases. Under 405 nm near-ultraviolet excitation, the phosphors exhibited characteristic emission spectra of Sm³⁺ ions. The optimum photoluminescence intensity was achieved at a Sm³⁺ doping concentration of 0.03, beyond which significant concentration quenching occurred. The CIE chromaticity coordinates and correlated color temperature for the optimal phosphor were determined to be (0.536 1, 0.452 6) and 2 177 K, respectively. Furthermore, the phosphor demonstrated excellent thermal stability: its emission intensity at 473 K retained 81% of the initial value measured at room temperature. The activation energy for thermal quenching, calculated to be 0.156 5 eV, further corroborated its superior thermal stability.
- sol-gel method,
- La₂MgZrO₆,
- orange-red phosphors,
- Sm³⁺ doping
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Preparation and luminescent properties of Sm³⁺-doped La₂MgZrO₆ phosphors