A rare earth-doped oxide microtube material with light-temperature sensing properties and its preparation method

A technology of rare earth doping and light-temperature sensing, which is applied in the direction of luminescent materials, chemical instruments and methods, and material analysis through optical means, can solve the problems that light-temperature performance detection cannot be realized, and fluoride materials are easy to be oxidized, etc. Achieve good thermal stability and chemical stability, increase sensitivity value, and high thermal stability

Active Publication Date: 2020-04-28
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

However, fluoride materials are easily oxidized at high temperatures and cannot be tested for light-temperature performance

Method used

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  • A rare earth-doped oxide microtube material with light-temperature sensing properties and its preparation method
  • A rare earth-doped oxide microtube material with light-temperature sensing properties and its preparation method
  • A rare earth-doped oxide microtube material with light-temperature sensing properties and its preparation method

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Embodiment Construction

[0024] The matrix material is selected from analytically pure HCl, NaOH and ethanol, and the rare earth ion is selected from an oxide with a concentration of 99.99% (Y 2 o 3 、Er 2 o 3 and Ho 2 o 3 ) as the main raw material, according to the ratio of matrix materials: YCl 3 : The dopant ion is: Er 3+ , Ho 3+ . Er 3+ The volume ratio of the doping concentration is: 1% Er 3+ , Ho 3+ The volume ratio of doping concentration is: 0, 0.2, 0.5, 1.0, 1.5% ratio to measure the raw materials, the volume of each raw material solution is shown in Table 1, the YCl of 0.2mol / L 3 , ErCl 3 , HoCl 3 Drop the solution into the hydrothermal reaction kettle in proportion, then slowly add NaOH (3.5ml) solution dropwise, stir with a magnetic stirrer for half an hour, and conduct a hydrothermal reaction at 200°C for 24 hours. After the reaction, cool, add distilled water, wash with ethanol, and centrifuge The samples were dried at 100°C for 6 hours, and then annealed at 900°C for 3 hour...

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Abstract

The invention relates to a rare earth-doped oxide micron tube material with light and temperature sensing properties, and a preparation method of the rare earth-doped oxide micron tube material, belonging to the technical field of rare earth luminescent materials. The rare earth-doped oxide micron tube material is characterized in that rare earth ions Er<3+> are taken as a luminescence center and are separately doped or co-doped into a Y2O3 micron tube; the prepared rare earth-doped oxide micron tube material emits intense fluorescence with multiple frequencies under the excitation of infrared light and has highly sensitive light and temperature sensing properties. The preparation method comprises the three steps of (a) selecting raw materials; (b) mixing the selected raw materials; (c) preparing the micron tube. The fluorescent powder prepared by the method not only can enable the infrared light to be converted into visible light, but also can realize the light and temperature sensing micron tube material with the light and temperature sensing properties. The material provided by the invention is suitable for large-scale industrial production.

Description

technical field [0001] The invention relates to a rare-earth-doped oxide microtube with light-temperature sensing properties and a preparation method thereof, belonging to the technical field of rare-earth luminescent materials. Background technique [0002] The thermometers we generally use in life measure the temperature of the surface of an object through contact. However, in many special fields, such as: inside microelectronic devices, coal mines, voltage transformation places of high-voltage power stations, etc., contact temperature measurement is difficult to achieve. Therefore, research on non-contact temperature sensors is necessary. Recently, the light-temperature sensing behavior based on the upconversion luminescence of rare-earth ion-doped phosphors has received much attention, because they can provide non-contact temperature measurement through the fluorescence intensity ratio (FIR) of two adjacent thermally coupled energy levels. . Non-contact FIR technology...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78G01N21/64
CPCC09K11/7769G01N21/643
Inventor 王祥夫王烨步妍妍孟岚颜晓红
Owner NANJING UNIV OF POSTS & TELECOMM
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