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Ytterbium-erbium co-doped bismuth oxyfluoride compound up-conversion material and preparation method thereof

A bismuth oxyfluoride and conversion material technology, applied in chemical instruments and methods, luminescent materials, etc., can solve the problems of high cost of up-conversion materials, easy deliquescence, complicated preparation process, etc., achieve low raw material cost, reduce energy consumption, and luminescence high brightness effect

Pending Publication Date: 2020-12-25
QUFU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problems of high cost, easy deliquescence and complicated preparation process of the up-conversion material existing in the prior art, the present invention provides an up-conversion fluorescent material based on non-rare earth matrix oxyfluoride and a preparation method thereof

Method used

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  • Ytterbium-erbium co-doped bismuth oxyfluoride compound up-conversion material and preparation method thereof
  • Ytterbium-erbium co-doped bismuth oxyfluoride compound up-conversion material and preparation method thereof
  • Ytterbium-erbium co-doped bismuth oxyfluoride compound up-conversion material and preparation method thereof

Examples

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Embodiment 1

[0022] According to x=0.1, y=0.008, according to the chemical formula Bi (1-x-y) OF: Yb x 3+ Er y 3+ Proportionally weigh Bi(NO 3 ) 3 ·5H 2 O, Yb 2 o 3 、Er 2 o 3 and NH 4 F. Bi(NO 3 ) 3 ·5H 2 O dissolves in water to form A solution; NH 4 F dissolves in water to form B solution. Then Yb 2 o 3 and Er 2 o 3 Dissolve together in dilute nitric acid and pour into Bi(NO 3 ) 3 solution, and continued to stir for 5 minutes to form C solution. Finally, solution B was added dropwise to solution C under stirring, resulting in a white precipitate. The above white precipitate was collected and washed, and heated in a muffle furnace at 400°C for 3 hours to obtain a white up-converting phosphor.

Embodiment 2

[0024] According to x=0.1, y=0.02, according to the chemical formula Bi (1-x-y) OF: Yb x 3+ Er y 3+ Proportionally weigh Bi(NO 3 ) 3 ·5H 2 O, Yb 2 o 3 、Er 2 o 3 , and KF. Bi(NO 3 ) 3 ·5H 2 O is dissolved in water to form A solution; KF is dissolved in water to form B solution. Then Yb 2 o 3 and Er 2 o 3 Dissolve together in dilute nitric acid and pour into Bi(NO 3 ) 3 solution, and continued to stir for 5 minutes to form C solution. Finally, solution B was added dropwise to solution C under stirring, resulting in a white precipitate. The above white precipitate was collected and washed, and heated in a muffle furnace at 400°C for 3 hours to obtain a white up-converting phosphor.

Embodiment 3

[0026] According to x=0.05, y=0.015, according to the chemical formula Bi (1-x-y) OF: Yb x 3+ Er y 3+ Proportionally weigh Bi(NO 3 ) 3 ·5H 2 O, Yb 2 o 3 、Er 2 o 3 , NH 4 F and KF. Bi(NO 3 ) 3 ·5H 2 O dissolves in water to form A solution; NH 4 F and KF are dissolved in water to form B solution. Then Yb 2 o 3 and Er 2 o 3 Dissolve together in dilute nitric acid and pour into Bi(NO 3 ) 3 solution, and continued to stir for 5 minutes to form C solution. Finally, solution B was added dropwise to solution C under stirring, resulting in a white precipitate. The above white precipitate was collected and washed, and heated in a muffle furnace at 400°C for 3 hours to obtain a white up-converting phosphor.

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Abstract

The invention discloses an ytterbium-erbium doped bismuth oxyfluoride up-conversion luminescent material and a preparation method thereof. The chemical formula of the up-conversion material is Bi(1-x-y)OF:Ybx<3+>Ery<3+>, wherein the molar ratio of Bi in the chemical formula replaced by Yb and Er is 0.05. The preparation method comprises the steps of (1) dissolving mixed nitrate containing bismuth,ytterbium and erbium in water to form a clear solution A; (2) mixing one or more of ammonium fluoride, sodium fluoride and potassium fluoride according to any proportion, and dissolving in water to form a solution B containing fluorine ions; and (3) dropwise adding the solution B into the solution A under continuous stirring, collecting and cleaning after the reaction is finished, drying a whitesolid product, and calcining the white solid product in a muffle furnace at 200-500oC for 1-5 hours to obtain the up-conversion luminescent material. The matrix raw material used in the invention is anon-rare earth material, the cost is low, the preparation process is simple and efficient, the up-conversion luminescence color is adjustable, and industrial production and application popularizationare easy.

Description

technical field [0001] The invention relates to an up-conversion luminescent material, in particular to a bismuth oxyfluoride up-conversion material co-doped with ytterbium and erbium and a preparation method thereof. Background technique [0002] Up-conversion luminescent material is a fluorescent material that converts long-wave near-infrared laser light into short-wavelength near-infrared light or visible light by using a multi-photon absorption process. application prospects. At present, the commonly used up-conversion matrix materials are mostly composed of rare earths. With the increasing depletion of rare earth resources and rising costs, it is an important research direction in this field to find high-quality and low-cost non-rare earth matrix materials. Bismuth oxyfluoride (BiOF) is a fluorine-containing bismuth oxide. Compared with other rare earth-containing matrix materials, it has the advantages of wide range of raw materials, low cost, no deliquescence, and st...

Claims

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Application Information

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IPC IPC(8): C09K11/74
CPCC09K11/777
Inventor 耿磊
Owner QUFU NORMAL UNIV