Citation: ZHAO Chun-Mei, NING De-Peng, LI Xue-Yan, JI Yin-Hao, WEN Ting. Solvothermal Synthesis and Luminescence Property of K₃ZrF₇: Mn⁴⁺ Red Phosphors[J]. Chinese Journal of Inorganic Chemistry, ;2020, 36(9): 1620-1624. doi: 10.11862/CJIC.2020.184 shu

Solvothermal Synthesis and Luminescence Property of K₃ZrF₇: Mn⁴⁺ Red Phosphors

1.
School of Chemical Engineering and Food Science, Zhengzhou Institute of Technology, Zhengzhou 450044, China
2.
Institute of Nano-Structured Functional Materials, Huanghe Science and Technology College, Zhengzhou 450006, China

Corresponding author: WEN Ting, tingwen@infm.hhstu.edu.cn
Received Date: 21 December 2019
Revised Date: 8 April 2020

Figures(6)

K₃ZrF₇ was prepared by solvothermal method, and Mn⁴⁺ was doped by ion-exchange method to obtain high intensity red phosphors. The structures and morphologies of the materials were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that pure K₃ZrF₇ can be obtained efficiently with oleylamine as solvent under anhydrous condition. When oleylamine is replaced with water, pure K₂ZrF₆ can be prepared successfully. The effect of doping concentration(molar fraction) of Mn⁴⁺ on PL intensity of the materials was also investigated. By comparing the luminescence behavior of two Mn⁴⁺ doped materials, it was found that the PL intensity of K₃ZrF₇:Mn⁴⁺ was more than 10 times higher than that of K₂ZrF₆:Mn⁴⁺ with the same doping concentration. The mechanism of luminescence intensity difference can be explained by crystal field theory. It is known that the crystal structure and coordination environment of doped ion are very important to PL intensity of materials. We consider that the higher PL intensity of K₃ZrF₇:Mn⁴⁺ may be relative to its larger asymmetry of local crystal field.
- red phosphor,
- manganese doped,
- solvothermal method
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Solvothermal Synthesis and Luminescence Property of K3ZrF7: Mn4+ Red Phosphors

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通讯作者: 陈斌, bchen63@163.com

Solvothermal Synthesis and Luminescence Property of K₃ZrF₇: Mn⁴⁺ Red Phosphors