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High-temperature fluorescence non-quenching phosphor and preparation method thereof

A luminescent center, oxide technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of complex preparation process, poor chemical stability, low phonon energy, etc. Effects of non-radiative loss

Inactive Publication Date: 2018-11-23
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

Fluoride has low phonon energy, wide light transmission ability from ultraviolet light to infrared light and good upconversion efficiency, but it also has obvious disadvantages such as high cost, poor chemical stability, complicated preparation process and environmental pollution.

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  • High-temperature fluorescence non-quenching phosphor and preparation method thereof
  • High-temperature fluorescence non-quenching phosphor and preparation method thereof
  • High-temperature fluorescence non-quenching phosphor and preparation method thereof

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Embodiment Construction

[0022] In order to further clarify the present invention, a series of examples are given below, these examples are completely illustrative, they are only used to specifically describe the present invention, and should not be construed as limiting the present invention.

[0023] Analytical pure Nb was selected as the three-matrix material 2 o 5 , NH 4 VO 3 And ethanol, rare earth oxides with a concentration of 99.99% (Y 2 o 3 and Eu 2 o 3 ) as the main raw material, according to the matrix material ratio is Nb 2 Y 1-x VO 9 Eu x (x=0.1, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.6). The quality of each raw material is shown in Table 1. Accurately weigh the raw materials, pour them into a cleaned mortar, add an appropriate amount of ethanol until the powder becomes viscous, grind for half an hour, and pour the ground samples into a cleaned crucible Put it into a high-temperature furnace at a firing temperature of 1050-1150°C for 6 hours. After the reaction, cool to room t...

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Abstract

The invention relates to a high-temperature fluorescence non-quenching phosphor and a preparation method thereof, and belongs to the technical field of rare earth luminescent materials. The rare earthion Eu<3+> serves as a luminescence center and is doped in a Nb2YVO9 material, and the molecular formula of the rare earth doped oxide material is Nb2Y(1-x)VO9Eux, wherein x is greater than 0 and less than 1. The oxide material emits strong fluorescence under excitation of 355nm light source; along with the temperature rise, the oxide material shows high-temperature fluorescence non-quenching feature at a temperature between 298K and 873K. The fluorescent powder prepared in the invention can realize conversion from infrared light to visible light as well as high-temperature fluorescence non-quenching property. The material provided by the invention is suitable for large-area industrial production.

Description

technical field [0001] The invention belongs to the technical field of rare earth luminescent materials, and relates to a high-temperature non-quenching fluorescent phosphor and a preparation method thereof, in particular to a rare earth-doped oxide material with high-temperature non-quenching fluorescence and a preparation method thereof. Background technique [0002] Rare-earth ion-doped phosphors are widely used in lasers, three-dimensional displays, and optical temperature sensors. The main research focuses on fluorides and oxides, where host materials play an important role in the upconversion emission process. Fluoride has low phonon energy, wide light transmission ability from ultraviolet to infrared light and good upconversion efficiency, but it also has obvious disadvantages such as high cost, poor chemical stability, complicated preparation process and environmental pollution. Compared with fluorides, oxides have high mechanical strength, better physical and chemi...

Claims

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Application Information

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IPC IPC(8): C09K11/82
CPCC09K11/7794
Inventor 王祥夫周凯王烨步妍妍颜晓红
Owner NANJING UNIV OF POSTS & TELECOMM
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