Sm<sup>3+</sup>掺杂LaOF荧光粉的制备及光学性能

doi:10.11896/cldb.22100249

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Abstract A series of Sm³⁺ doped LaOF phosphors were prepared by hydrothermal assisted solid-state method using LaOF crystal as matrix. The phase structure, microstructure and optical properties of the prepared samples were characterized by XRD, TEM and fluorescence spectrometer. The results show that at different calcination temperatures, two different crystalline phases, tetragonal and rhombohedral, are produced. Moreover, due to the transition odds and local symmetry, the Sm³⁺ doped tetragonal phase LaOF has a greater luminous intensity, and the characteristic emission peaks of Sm³⁺ appear at 567 nm, 605 nm, 651 nm and 710 nm under 405 nm excitation. With the increase of Sm³⁺ doping amount, the emission intensity of Sm³⁺ first increases and then decreases. When the doping amount of Sm³⁺ is 3.0mol%, the luminescence intensity of La_1-xSm_xOF samples reaches the maximum. In addition, the excitation purity of the obtained samples is extremely high, and many excitation peaks of the samples are located near the emission wavelength of commercial near ultraviolet and blue LED chips, which can achieve visible orange light emission under excitation of various wavelengths.

Key words： hydrothermal assisted solid phase method rare earth elements samarium doping optical property

Published: 10 February 2024 Online: 2024-02-19

CLC number:

TB34

Fund:ChinaNational Petroleum Corporation Petrochemical Research Institute Project(2021210207000265).

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	JIA Yumeng
	SHI Zhongxiang
	WANG Jing
	LI Xiang

Cite this article:

JIA Yumeng,SHI Zhongxiang,WANG Jing, et al. Synthesis and Luminescence Properties of Sm³⁺ Doped LaOF Phosphors[J]. Materials Reports, 2024, 38(3): 22100249-7.

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http://www.mater-rep.com/EN/10.11896/cldb.22100249 OR http://www.mater-rep.com/EN/Y2024/V38/I3/22100249

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