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Lead-free ferroelectric upconversion fluorescent material and its preparation method and application

A fluorescent material and ferroelectric technology, applied in luminescent materials, chemical instruments and methods, instruments, etc., to achieve the effects of reducing production costs, protecting rare earth resources, and increasing luminous intensity

Active Publication Date: 2019-08-06
东营睿港投资服务有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] If the material is ABO 3 type structure of perovskite lead-free ferroelectric ceramics, there are many inherent point defects, most of which are oxygen vacancies

Method used

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  • Lead-free ferroelectric upconversion fluorescent material and its preparation method and application
  • Lead-free ferroelectric upconversion fluorescent material and its preparation method and application
  • Lead-free ferroelectric upconversion fluorescent material and its preparation method and application

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Embodiment 1

[0029] Using 99.8% pure Na 2 CO 3 , 99.9% Bi 2 o 3 ,99.8% TiO 2 , 99.9% Tm 2 o 3 and 99.9% Yb 2 o 3 As raw materials, five groups of lead-free ferroelectric upconversion fluorescent ceramics with different components were prepared, according to the chemical formula Na 0.5 Bi 0.499- x Yb x T m 0.001 TiO 3 (x=0.005, 0.01, 0.015, 0.02) are weighed separately, put into a ball mill tank and mixed for ball milling, ball milling conditions: the volume ratio of raw materials, agate ball volume, and ball milling medium absolute ethanol is approximately equal to 1:1 : 1.5, it was ball milled for 12 hours, and the raw material after ball milling was put into an oven and baked at 80° C. for 4 hours. Afterwards, use a tablet machine to press the dried raw materials into raw material embryos with a diameter of 40 mm, and then put the pressed embryos into a KBF1400 box furnace for pre-calcination. The pre-calcination condition is 850 ° C for 2 hours. , and then crush the pre-fi...

Embodiment 2

[0031] Using 99.8% pure Na 2 CO 3 , 99.9% Bi 2 o 3 ,99.8% TiO 2 , 99.9% Tm 2 o 3 and 99.9% Yb 2 o 3 Prepare five groups of lead-free ferroelectric upconversion fluorescent ceramics with different components as raw materials, according to the chemical formula Na 0.5 Bi 0.499- x Yb x T m 0.001 TiO 3 (y=0.00005, 0.0001, 0.0004, 0.0007, 0.001) are weighed respectively, put into a ball mill tank and mix ball milling, ball milling conditions: the volume ratio of raw material, agate ball volume, ball milling medium anhydrous ethanol is approximately equal to 1 : 1.2: 1, ball mill it for 12 hours, put the raw material after ball milling into an oven and bake at 80°C for 4 hours. Afterwards, use a tablet machine to press the dried raw materials into raw material embryos with a diameter of 40mm, and then put the pressed embryos into a KBF1400 box furnace for pre-calcination. The pre-calcination condition is 750 ° C for 2 hours. , and then crush the pre-fired block sample, ...

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Abstract

The invention relates to an unleaded ferroelectric upconversion fluorescence material. The unleaded ferroelectric upconversion fluorescence material comprises a perovskite unleaded ferroelectric ceramic material with the structure of ABO3, and is characterized in that the chemical formula of the unleaded ferroelectric ceramic material is Na0.5Bi0.5-x-yYbxTmyTiO3, wherein x is greater than or equal to 0.005 and smaller than or equal to 0.02, y is greater than or equal to 0.00005 and smaller than or equal to 0.001, and then defect-based upconversion fluorescence is realized by adding a rare earth element sensitizer Yb<3+> and a rare earth element activator Tm<3+> to substitute Bi<3+> on A sites. The invention also discloses a preparation method of the material. Inherent point defects are used for replacing green rare earth ions emitted in the unleaded ferroelectric ceramic material, so that the adjustment of ceramic components is realized, and then the upconversion fluorescence color and performance of the ceramic material are adjusted; and meanwhile, the invention also provides a preparation method and application of the unleaded ferroelectric upconversion fluorescence material, so that the production cost can be greatly reduced, and the rare earth resources are protected to a great extent.

Description

technical field [0001] The invention relates to a ferroelectric material, and also discloses a preparation method of the ferroelectric material and its application in up-conversion luminescent materials. Background technique [0002] Up-conversion fluorescent materials have attracted extensive attention from researchers due to their excellent properties such as high fluorescence efficiency, good stability, and high resolution. They can emit visible light or even ultraviolet light under the excitation of long-wave (such as infrared) radiation. , fiber amplifier, three-dimensional display, biomolecular fluorescent labeling, infrared radiation detection and other fields have broad application prospects. Recently, there are more and more applications and researches on the preparation of up-conversion luminescent materials with lead-free ferroelectric materials doped with rare earth elements. For related documents, please refer to the Chinese invention patent "praseodymium-doped ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78G01K11/14
CPCC09K11/7769G01K11/14
Inventor 罗来慧黄胤鹏
Owner 东营睿港投资服务有限责任公司
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