Citation: Xia-Xia FAN, Zhi- Xiang GAO, Wen-Shan QU, Cui-Feng TIAN, Jian-Gang LI, Wei LI, Li-Juan DONG, Yun-Long SHI. Synthesis and Luminescence Properties of Li₄SrCa(SiO₄)₂∶Eu³⁺ Red Phosphor[J]. Chinese Journal of Inorganic Chemistry, ;2022, 38(6): 1016-1022. doi: 10.11862/CJIC.2022.123 shu

Synthesis and Luminescence Properties of Li₄SrCa(SiO₄)₂∶Eu³⁺ Red Phosphor

Xia-Xia FAN ^{1, 2} ,
Zhi- Xiang GAO ^1,, ,
Wen-Shan QU ² ,
Cui-Feng TIAN ^1,, ,
Jian-Gang LI ¹ ,
Wei LI ¹ ,
Li-Juan DONG ¹ ,
Yun-Long SHI ¹

1.
Shanxi Province Key Laboratory of Microstructure Electromagnetic Functional Materials, Shanxi Datong University, Datong, Shanxi 037009, China
2.
School of Chemistry and Chemical Engineering, Shanxi Datong University, Datong, Shanxi 037009, China

Corresponding author: Zhi- Xiang GAO, zxgao@sxdtdx.edu.cn Cui-Feng TIAN, cftian_050@sxdtdx.edu.cn
Received Date: 1 November 2021
Revised Date: 22 April 2022

Figures(8)

Li₄SrCa(SiO₄)₂∶Eu³⁺ red phosphor was synthesized by a high-temperature solid-phase method using silicate as a host material. The phase, morphology, and luminescence properties of the powder were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, and fluorescence spectroscopy. The results showed that the crystal structure does not change after the addition of the europium ion. Under the light excitation at 393 nm, the emission peak intensity of the sample was the strongest at 693 nm. With 693 nm as the monitoring wavelength, the main excitation peaks were 361 nm (⁷F₀→⁵D₄), 375 nm (⁷F₀→⁵G₃), 413 nm (⁷F₀→⁵D₃), 393 nm (⁷F₀→⁵L₆), and 464 nm (⁷F₀→⁵D₂), which suggests that the phosphor has good absorption to near-ultraviolet and blue light, and has the potential to produce white light-emitting diodes. The effect of Eu³⁺ doped concentration on the luminescence intensity of phosphor was studied by emission spectroscopy. When the doped concentration of europi- um ion (molar fraction, x) was equal to 0.10, the emission intensity of the sample was the strongest, and the sample emitted red light. The mechanism of concentration quenching was analyzed by the relationship between Dexter strength and concentration.
- high-temperature solid-phase method,
- Li₄SrCa(SiO₄)₂∶Eu³⁺,
- red,
- luminescence properties
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Synthesis and Luminescence Properties of Li₄SrCa(SiO₄)₂∶Eu³⁺ Red Phosphor