Preparation method for loading CsPbX3 on surface of long-afterglow luminescent material

A long-lasting luminescent and surface-loaded technology, which is applied in the direction of luminescent materials, chemical instruments and methods, can solve the problem of single luminescent color, and achieve the effects of simple synthesis process, easy mass synthesis, and high long-lasting luminescent performance

Inactive Publication Date: 2021-01-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a long afterglow luminescent material surface loading CsPbX 3 The preparation method solves the problem of single luminous color of existing long-lasting luminescent materials

Method used

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  • Preparation method for loading CsPbX3 on surface of long-afterglow luminescent material
  • Preparation method for loading CsPbX3 on surface of long-afterglow luminescent material
  • Preparation method for loading CsPbX3 on surface of long-afterglow luminescent material

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Experimental program
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Effect test

Embodiment 1

[0040]CsPbX loaded on the surface of a long afterglow luminescent material of the present invention 3 The preparation method is specifically implemented according to the following steps:

[0041] Step 1, mix 0.4mmolCsBr and 0.4mmolPbBr 2 , and 0.8ml oleic acid (OA), 0.2ml oleylamine (OAm) were completely dissolved in 10ml of dimethylformamide (DMF) solvent, magnetically stirred for 30min to obtain a clear solution after dissolution;

[0042] Step 2, drop 0.5ml of the clear solution into 10ml of toluene, stir to obtain sample a, and the stirring speed is 800rpm;

[0043] Step 3, 0.5ml of sample a, 0.1ml of tetraethyl orthosilicate (TEOS), 0.1g of Sr 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ Add it into toluene, adjust the pH to 8, stir for 30min; the stirring speed is 500rpm;

[0044] Step 4, the turbid solution obtained in step 3 is centrifuged, washed 3 times with toluene, and dried to obtain CsPbX 3 Surface-loaded long-lasting luminescent materials.

[0045] The centrifugal spee...

Embodiment 2

[0048] CsPbX loaded on the surface of a long afterglow luminescent material of the present invention 3 The preparation method is specifically implemented according to the following steps:

[0049] Step 1, mix 0.4mmolCsCl and 0.4mmolPbCl 2 , and 0.8ml oleic acid (OA), 0.2ml oleylamine (OAm) were completely dissolved in 10ml of dimethylformamide (DMF) solvent, and magnetically stirred for 30min to obtain a clear solution after dissolution;

[0050] Step 2, drop 0.5ml of the clear solution into 10ml of toluene, stir to obtain sample a, and the stirring speed is 800rpm;

[0051] Step 3, 0.5ml of sample a, 0.1ml of tetraethyl orthosilicate (TEOS), 0.1g of Sr 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ Add it into toluene, adjust the pH to 9, stir for 30min; the stirring speed is 500rpm;

[0052] Step 4, centrifuge the turbid solution obtained in step 3, wash with toluene several times, and dry to obtain CsPbX 3 Surface-loaded long-lasting luminescent materials.

[0053] The centrifugal s...

Embodiment 3

[0056] CsPbX loaded on the surface of a long afterglow luminescent material of the present invention 3 The preparation method is specifically implemented according to the following steps:

[0057] Step 1, mix 0.4mmolCsI and 0.4mmolPbI 2 , and 0.8ml oleic acid (OA), 0.2ml oleylamine (OAm) were completely dissolved in 10ml of dimethylformamide (DMF) solvent, and magnetically stirred for 30min to obtain a clear solution after dissolution;

[0058] Step 2, drop 0.5ml of the clear solution into 10ml of toluene, stir to obtain sample a, and the stirring speed is 800rpm;

[0059] Step 3, 0.5ml of sample a, 0.1ml of tetraethyl orthosilicate (TEOS), 0.1g of Sr 2 MgSi 2 o 7 : Eu 2+ , Dy 3+ Add it into toluene, adjust the pH to 10, stir for 30min; the stirring speed is 500rpm;

[0060] Step 4, centrifuge the turbid solution obtained in step 3, wash with toluene several times, and dry to obtain CsPbX 3 Surface-loaded long-lasting luminescent materials.

[0061] The centrifugal sp...

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Abstract

The invention discloses a preparation method of a long-afterglow luminescent material with CsPbX3 loaded on the surface. The preparation method comprises the following steps: completely dissolving CsX, PbY2, oleic acid and oleyl amine in a dimethyl formamide solvent, and stirring to obtain a clear solution; dropwise adding the clear solution into methyl benzene, and stirring to obtain a sample a;and adding the sample a, TEOS and a long-afterglow luminescent material into methyl benzene, adjusting the pH value to 8-10, stirring, centrifuging, washing with methyl benzene for multiple times, anddrying to obtain the long-afterglow luminescent material with CsPbX3 loaded on the surface. The long-afterglow luminescent material with CsPbX3 loaded on the surface is obtained by adopting a stobermethod and is used for improving the long-afterglow luminescent property of the long-afterglow luminescent material, and meanwhile, a long-afterglow luminescent composite material with an adjustable luminescent color is obtained. The preparation method is simple and feasible, has low equipment requirements, does not need expensive processing synthesis equipment, high-temperature and high-pressurereaction devices and the like, and is convenient for industrial large-scale production.

Description

technical field [0001] The invention belongs to the technical field of luminescent material preparation, and in particular relates to a long afterglow luminescent material surface loaded with CsPbX 3 method of preparation. Background technique [0002] Long afterglow materials are irradiated by visible light or ultraviolet light, and electrons are excited to a high-energy state and stored inside the material. When disturbed by external heat, the excited electrons will be released slowly, combine with holes, and release light of a certain wavelength. Light, so long-lasting materials are both energy storage materials and photoluminescent materials. At present, the research on long-lasting luminescent materials mainly focuses on the visible light region, and most of them use Eu 2+ And other rare earth ions are used as activators, and other rare earth ions are used as auxiliary activators, and the types of long afterglow materials are relatively small, resulting in a single lu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/66C09K11/59C09K11/64C09K11/02
CPCC09K11/665C09K11/7792C09K11/02
Inventor 海鸥裴孟康任强武秀兰杨恩龙杜亮肖欣南贺小丽
Owner SHAANXI UNIV OF SCI & TECH
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