Spectroscopy and Spectral Analysis, Volume. 45, Issue 9, 2684(2025)
Preparation and Luminescence Performance of Li2Mg3TiO6:Sm3+ Orange-Red Phosphor
A series of Li2Mg3TiO6:xSm3+ (0.005≤x≤0.010) orange-red phosphors was prepared using the high-temperature solid-state method. The luminescent transition mechanism of the phosphor was analyzed, and the packaging of LED devices was conducted. The results indicate that the Li2Mg3TiO6:Sm3+ prepared by the high-temperature solid-state method has a pure phase, uniform particle distribution, and an average particle size of 3 μm. The main excitation peak of Li2Mg3TiO6:Sm3+ is 344 nm, and the main emission peak is 677 nm, with an optimal doping concentration of 5%. At 350 K, the relative luminescent intensity of the sample is 63.5%, and the thermal activation energy ΔE is 0.363 eV. The color coordinates of Li2Mg3TiO6:0.05Sm3+ calculated by CIE are located in the red-light region (0.630 8, 0.358 4). The packaged LED device emits red light with good color rendering Li2Mg3TiO6:Sm3+ red phosphor is expected to be used in white light LEDs.
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LI Peng-cheng, LI Zhao, WANG Wei-gang, ZHOU Jun. Preparation and Luminescence Performance of Li2Mg3TiO6:Sm3+ Orange-Red Phosphor[J]. Spectroscopy and Spectral Analysis, 2025, 45(9): 2684
Received: Jan. 24, 2025
Accepted: Sep. 19, 2025
Published Online: Sep. 19, 2025
The Author Email: LI Zhao (pylizhao@163.com)