Original Article

Study on the luminescence enhancement of NaLaMgWO₆: Eu phosphors

¹ Key Laboratory of New Energy and Rare Earth Resource Utilization of State Ethnic Affairs Commission, Key Laboratory of Photosensitive Materials & Devices of Liaoning Province, School of Physics and Materials Engineering, Dalian Minzu University, Dalian 116600, P.R. China
² College of Science, Dalian Jiaotong University, Dalian 116028, P.R. China
³ National Rare Earth Functional Materials Innovation Center, Dalian 116001, P.R. China

^* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Received: 29 March 2025
Accepted: 1 December 2025
Published online: 13 January 2026

Abstract

Eu³⁺ doped NaLaMgWO₆ red phosphors were prepared by solid state sintering method. The electronic structures of the phosphors are evaluated through density functional theory calculation. The band structure and density of states are studied. Y³⁺ or Lu³⁺ ions were adopted to enhance the luminescence properties of the red phosphors. When excited at 465 nm, these phosphors present strong red emission at 618 nm. The octahedral distortion leads to the improvement of the luminescence performance of the NaLaMgWO₆: Eu³⁺ phosphors. The photoluminescence intensity at 150 °C is 77% of that at room temperature. The chromaticity coordinates of prepared phosphors are in the red region and near the standard value for red color. These results indicate that this series of tungstate phosphors can serve as a potential red emitting material for lighting devices.