Citation: Jin-Xiu WU, Qian-Qian WANG, Bao-Long WU, Zhao-Gang LIU, Yan-Hong HU, Yuan-Hao QI, Xiao-Wei ZHANG, Fu-Shan FENG, Jian-Fei LI. GdPO₄: Sm³⁺ phosphor: Optimization of calcination temperature and doping concentration and fluorescence and magnetic properties[J]. Chinese Journal of Inorganic Chemistry, ;2023, 39(6): 1179-1192. doi: 10.11862/CJIC.2023.081 shu

GdPO₄: Sm³⁺ phosphor: Optimization of calcination temperature and doping concentration and fluorescence and magnetic properties

Jin-Xiu WU ^{1, 2, 3,,} ,
Qian-Qian WANG ^{1, 2, 3} ,
Bao-Long WU ^{1, 2, 3} ,
Zhao-Gang LIU ^{1, 2, 3} ,
Yan-Hong HU ^{1, 2, 3} ,
Yuan-Hao QI ^{1, 2, 3} ,
Xiao-Wei ZHANG ^{1, 2, 3} ,
Fu-Shan FENG ^{1, 2, 3} ,
Jian-Fei LI ^{1, 2, 3}

1.
School of Materials and Metallurgy, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia 014010, China
2.
Key Laboratory of Green Extraction and Efficient Utilization of Light Rare Earth Resources, Ministry of Education, Baotou, Inner Mongolia 014010, China
3.
Key Laboratory of Rare Earth Hydrometallurgy and Light Rare Earth Application, Inner Mongolia Autonomous Region, Baotou, Inner Mongolia 014010, China

Corresponding author: Jin-Xiu WU, m13674773965@163.com
Received Date: 6 June 2022
Revised Date: 25 April 2023

Figures(16)

Nano-phosphor precursors were synthesized with GdPO₄ as the matrix and Sm³⁺ as the activator using the hydrothermal synthesis method. The precursors were calcinated at 800, 900, 1 000, 1 100, and 1 200℃ respectively, thus obtaining GdPO₄: Sm³⁺ phosphors. Firstly, the optimal calcination temperature of GdPO₄: Sm³⁺ was optimized. Then the effect of Sm³⁺ doping amount on the fluorescence properties of GdPO₄: Sm³⁺ was studied. The hightemperature fluorescence and magnetic properties of the best product were studied in detail. The crystal structure, morphology, luminescence, and magnetic properties of the phosphors were characterized using an X-ray diffractometer (XRD), scanning electron microscope (SEM), magnetometer, and fluorescence spectrophotometer (FL). The results indicate that the crystal structure of phosphors was changed from the precursor GdPO₄·H₂O: Sm³⁺ in the hexagonal crystal system to GdPO₄: Sm³⁺ in the monoclinic crystal system. The morphology was changed from nanorods to like-sphere particles. The luminous intensity and phosphorescence lifetime of the phosphors attained their highest levels when the calcination temperature was 1 000℃ and the Sm³⁺ doping concentration was 2%. The type of energy transferred between Sm³⁺ in GdPO₄: 2%Sm³⁺ was electric dipole-electric dipole interaction, and the critical distance of energy transfer was about 1.646-1.884 nm. The optimal product GdPO₄: 2%Sm³⁺ had excellent thermal stability, with the thermal quenching activation energy as -0.157 eV. Moreover, it had good paramagnetism, with a mass susceptibility of 1.22×10^-4 emu·g^-1·Oe^-1.
- GdPO₄: Sm³⁺,
- calcination temperature,
- quenching mechanism of concentration,
- fluorescence properties,
- magnetic properties
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沈阳化工大学材料科学与工程学院沈阳 110142

GdPO4: Sm3+ phosphor: Optimization of calcination temperature and doping concentration and fluorescence and magnetic properties

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通讯作者: 陈斌, bchen63@163.com

GdPO₄: Sm³⁺ phosphor: Optimization of calcination temperature and doping concentration and fluorescence and magnetic properties