Method for liquid-solid-solution synthesis of rare earth doped fluorine zinc potassium luminescent material

A luminescent material and rare earth doping technology, which is applied in the field of liquid-solid-solution synthesis of rare earth-doped fluorine-zinc-potassium luminescent materials, which can solve the problems of limited rare earth resources and high cost of rare earth substrates

Inactive Publication Date: 2017-01-18
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, rare earth resources are limited, so the cost of rare earth substrates is relatively high

Method used

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  • Method for liquid-solid-solution synthesis of rare earth doped fluorine zinc potassium luminescent material
  • Method for liquid-solid-solution synthesis of rare earth doped fluorine zinc potassium luminescent material
  • Method for liquid-solid-solution synthesis of rare earth doped fluorine zinc potassium luminescent material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1 A preparation method of europium-doped fluorine-zinc-potassium micron luminescent powder, the product chemical formula is KZnF 3 : 0.07 Eu 3+ ;

[0022] 1) Accurately weigh 0.5 g KOH into a 50 mL Erlenmeyer flask filled with 10 mL deionized water and dissolve it for use;

[0023] 2) Add 15 mL of n-butanol and 5 mL of oleic acid and continue to stir at a constant speed for 20 min to form a yellow oily liquid and obtain Solution A;

[0024] 3) Weigh Zn(NO 3 ) 2 ·6H 2 O 0.2767 g, at the same time measure the concentration of 0.5 mol L -1 Eu(NO 3 ) 3 Solution 0.14 mL was mixed and added to solution A, and the resulting solution was stirred with a stirrer for 30 min to form a slightly yellow emulsion;

[0025] 4) Add 0.2964 g NH to the solution 4 F continued to stir for 1 h to obtain a white emulsion mixed solution;

[0026] 5) Put the stirred milky white solution into a 50 mL polytetrafluoroethylene reactor, and continue heating at 120 °C for 48 h; ...

Embodiment 2

[0030] Example 2A preparation method of terbium-doped fluorine-zinc-potassium micron luminescent powder, the product chemical formula is KZnF 3 : 0.05Tb 3+ ;

[0031] 1) Accurately weigh 0.5 g KOH into a 50 mL Erlenmeyer flask filled with 10 mL deionized water and dissolve it for use;

[0032] 2) Add 15 mL of n-butanol and 5 mL of oleic acid and continue to stir at a constant speed for 20 min to form a yellow oily liquid and obtain Solution A;

[0033] 3) Weigh Zn(NO 3 ) 2 ﹒ 6H 2 O 0.2826 g, at the same time measure the concentration of 0.1 mol L -1 Tb(NO 3 ) 3 0.5 mL of the solution was mixed and added to solution A, and the resulting solution was stirred with a stirrer for 30 min to form a uniform yellow solution;

[0034] 4) Add 0.2964 g NH to the solution 4 F continued to stir for 1 h to obtain a white emulsion mixed solution;

[0035] 5) Put the stirred milky white solution into a 50 mL polytetrafluoroethylene reactor, and continue heating at 120 °C for 48 ...

Embodiment 3

[0039] Example 3 A preparation method of europium / terbium doped cerium lanthanum micron luminescent powder, the product chemical formula is KZnF 3 : 0.05 Tb 3+ , 0.07Eu 3+ ;

[0040] 1) Accurately weigh 0.5 g KOH into a 50 mL Erlenmeyer flask filled with 10 mL deionized water and dissolve it for use;

[0041] 2) Add 15 mL of n-butanol and 5 mL of oleic acid and continue to stir at a constant speed for 20 min to form a yellow oily liquid and obtain Solution A;

[0042] 3) Weigh Zn(NO 3 ) 2 ·6H 2 O 0.2618 g, at the same time measure the concentration of 0.1 mol L -1 Tb(NO 3 ) 3 Solution 0.5 mL and concentration 0.5 mol L -1 Eu(NO 3 ) 3 Solution 0.14 mL was mixed and added to solution A, and the resulting solution was stirred with a stirrer for 30 min to form a uniform yellow solution;

[0043] 4) Add 0.2964 g NH to the solution 4 F continued to stir for 1 h to obtain a white emulsion mixed solution;

[0044] 5) Put the stirred milky white solution into a 50 mL...

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Abstract

The invention provides a method for synthesis of KZnF3:Eu<3+>;Tb<3+>;Eu<3+> / Tb<3+>;Eu<3+> / Tb<3+> / Tm<3+> micron-crystal. The XRD spectrum of the micro-crystal completely matches with the standard card PDF#06-0439 main diffraction peak, and the prepared cubic phase crystal belongs to the Pm-3m (No.221) point group. Through calculation by the Jade 5.0 software, the cell parameters of the KZnF3 micro-crystal synthesized by ''liquid-solid-solution (LSS)'' interface phase transfer-phase separation mechanism can be obtained, i.e. a=4.056, Z=1. The photoluminescence spectrum shows that Eu<3+> / Tb<3+> / Tm<3+> tri-doped KZnF3 can produce white light emission, and the fluorescent powder micron material has potential extensive application in LED and other fields.

Description

technical field [0001] The invention belongs to the technical field of luminescent materials, and in particular relates to a liquid-solid-solution method for synthesizing a rare earth-doped fluorine-zinc-potassium luminescent material. Background technique [0002] Rare earth fluoride crystals have attracted much attention in the field of luminescence due to their low phonon energy and few non-radiative transitions. [1-5] . However, the research on solid-state luminescent materials in the past few decades has mainly focused on the doping of rare earth ions or transition metal ions in rare earth matrix crystals. [6] . However, rare earth resources are limited, so the cost of rare earth matrix is ​​relatively high. Due to the similar radii of transition metal ions and rare earth ions, some new hosts such as KMnF 3 , KMgF 3 etc. have been used to obtain up-converting and down-converting luminescent [7, 8] . QUR 3 It is a functional material with a perovskite structure, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/61
Inventor 邸克书闫景辉
Owner CHANGCHUN UNIV OF SCI & TECH
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