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Up-conversion red luminescent powder and preparation method thereof

A technology of red luminescence and preparation steps, which is applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems of adverse effects of use, reduced conversion luminescence performance, unstable luminescence performance, etc., and achieves low cost, improved luminescence performance, chemical Good performance and mechanical stability

Pending Publication Date: 2017-12-29
JIAXING ZHONGYI CARBON TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The biggest problem is that this phase change process will lead to a 5% volume expansion of the material. This phase change process will inevitably cause changes in the coordination mode of some ions, resulting in a significant decrease in the up-conversion luminescence performance of the material, which will affect the final use effect. cause adverse effects
[0008] In order to ensure that zirconia has a high up-conversion luminescence performance and obtain a good use effect, the first technical problem to be solved is: the up-conversion luminescence material based on pure zirconia has a lower luminescence performance due to the non-single and unstable matrix phase. and reduced mechanical properties

Method used

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  • Up-conversion red luminescent powder and preparation method thereof

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Effect test

Embodiment 1

[0033] ZrCa 0.06 Yb 0.075 Er 0.015 o 2.195 The preparation method of up-conversion red luminescent powder CSR(6)-I' comprises the steps:

[0034] a) Weigh 7.88g Yb respectively 2 o 3 , 0.382g Er 2 o 3 were added to two beakers with a capacity of 200mL, and 50mL of deionized water were added, according to Er 2 o 3 , Yb 2 o 3 , and the concentrated nitric acid molar ratio is 1:7, respectively measure the concentrated nitric acid and join in the beaker with the corresponding Er 2 o 3 , Yb 2 o 3 Mix and stir while performing a water bath at 70 to 80°C. After the above two rare earth oxides were completely dissolved in dilute nitric acid, the corresponding Yb(NO 3 ) 3 solution and Er(NO 3 ) 3 solution, add deionized water to the two solutions respectively to make the total volume of each solution become 200mL, at this time Yb(NO 3 ) 3 The molar concentration is 0.2mol / L, Er(NO3 ) 3 The concentration is 0.01mol / L.

[0035] b) Weigh 2.33g ZrO(NO 3 ) 2 In a 10...

Embodiment 2

[0043] ZrCa 0.06 Yb 0.075 Er 0.01 o 2.1875 The preparation method of the up-conversion red luminescent powder CSR(6)-II' comprises the following steps:

[0044] a) Weigh 7.88g Yb respectively 2 o 3 , 0.382g Er 2 o 3 were added to two beakers with a capacity of 200mL, and 50mL of deionized water were added, according to Er 2 o 3 , Yb 2 o 3 , and the concentrated nitric acid molar ratio is 1:7, respectively measure the concentrated nitric acid and join in the beaker with the corresponding Er 2 o 3 , Yb 2 o 3 Mix and stir while performing a water bath at 70 to 80°C. After the above two rare earth oxides were completely dissolved in dilute nitric acid, the corresponding Yb(NO 3 ) 3 solution and Er(NO 3 ) 3 solution, add deionized water to the two solutions respectively to make the total volume of each solution become 200mL, at this time Yb(NO 3 ) 3 The molar concentration is 0.2mol / L, Er(NO 3 ) 3 The concentration is 0.01mol / L.

[0045] b) Weigh 2.33g ZrO(N...

Embodiment 3

[0053] ZrCa 0.06 Yb 0.075 Er 0.012 o 2.1905 The preparation method of up-conversion red luminescent powder CSR (6)-Ⅲ comprises the following steps:

[0054] b) Weigh 2.33g ZrO(NO 3 ) 2 In a 100mL beaker, measure 0.2mol / L concentration of Yb(NO 3 ) 3 Solution 3.75mL, 0.01mol / L Er(NO 3 ) 3 Add 10.0mL of the solution into the beaker, then weigh 0.1416g Ca(NO 3 ) 2 • 4H 2 O in a beaker, the total volume of supplemented liquid is 50mL, and the solution becomes completely clear after rapid stirring with a magnetic stirrer. At this time, Zr 4+ The concentration is 0.2mol / L.

[0055] Other steps are identical with above-mentioned embodiment two, can get ZrCa 0.06 Yb 0.075 Er 0.012 o 2.1905 Up-conversion red luminescent powder CSR(6)-Ⅲ. At room temperature, excited by 50mW 980nm laser, the powder can produce bright red light visible to the naked eye under bright field.

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Abstract

The invention relates to up-conversion red luminescent powder and a preparation method thereof. The concrete chemical formula of the up-conversion red luminescent powder is ZrCa0.06YbyErzO2.06 plus 1.5 (y plus z). By calcium ion doping, a precursor is obtained by utilizing a liquid phase coprecipitation method, the precursor is subjected to high-temperature calcination at 1,100 DEG C and ball-milling treatment so as to obtain stable up-conversion red luminescent powder of tetragonal phase rare earth doping zirconium oxide. The luminescent powder is characterized by being high in illumination brightness, small in grain size and good in chemical and mechanical stability, has a great practical value in the infrared anti-counterfeiting field, and further has a potential application value in the up-conversion bioluminescence labeling aspect.

Description

technical field [0001] The invention relates to an infrared up-conversion luminescent material and a preparation method thereof, in particular to an up-conversion red luminescent powder capable of emitting bright and visible red light under the excitation of 980nm infrared light and a preparation method thereof. Background technique [0002] Infrared upconversion luminescence is an anti-Stokes light emission process that generates short-wavelength light under the excitation of infrared light. Due to the large frequency shift between the emitted light wave and the excited light wave, up-conversion luminescent materials can be used in bioluminescence labeling, anti-counterfeiting, short-wavelength all-solid-state lasers, optical fiber communications, infrared detection, lighting, and multi-color three-dimensional display and other fields. [0003] The key to preparing efficient and stable rare-earth doped up-conversion luminescent materials is to select a suitable up-conversio...

Claims

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Application Information

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IPC IPC(8): C09K11/67
CPCC09K11/7768
Inventor 陈显群李平
Owner JIAXING ZHONGYI CARBON TECH
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