Carbon dot-organic silicon composite fluorescent material as well as preparation method and application thereof

A composite fluorescent and organic silicon technology, which is applied in the direction of luminescent materials, chemical instruments and methods, photovoltaic power generation, etc., can solve the problems of hindering application, disappearing, and decreasing fluorescence intensity, and achieve good compatibility, mild curing conditions, and preparation methods simple effect

Pending Publication Date: 2022-06-03
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most carbon dots are affected by the aggregation-induced quenching effect after drying into thin films or powders, and the fluorescence intensity drops sharply or even disappears, which seriously hinders their application in solid-state devices. Therefore, research on the preparation of carbon with stable solid-state fluorescence very realistic

Method used

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  • Carbon dot-organic silicon composite fluorescent material as well as preparation method and application thereof
  • Carbon dot-organic silicon composite fluorescent material as well as preparation method and application thereof
  • Carbon dot-organic silicon composite fluorescent material as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0055] A method for preparing a carbon dot-organosilicon composite fluorescent material in this embodiment, the method specifically includes the following steps:

[0056] 0.52g of citric acid and 3.78mL of 3-aminopropyltriethoxysilane (Aladdin Reagent Company, CAS No.: 919-30-2, density: 0.95g / cm 3 ) was dissolved in a mixed solvent consisting of 10 mL of deionized water and 20 mL of anhydrous ethanol. The obtained mixed reaction solution was transferred to a Teflon-lined stainless steel autoclave, and placed in a blast drying oven at 200° C. for 12 hours. After the reaction product was centrifuged to separate the solid and the liquid, the solid was washed three times with deionized water and anhydrous ethanol, and dried in an oven at 50° C. overnight to obtain a white powder.

[0057] Depend on figure 1 It can be seen that the carbon dots-organosilicon composite fluorescent material prepared in this example emits blue light under a 365 nm ultraviolet lamp.

Embodiment 2

[0059] A method for preparing a carbon dot-organosilicon composite fluorescent material in this embodiment, the method specifically includes the following steps:

[0060] 0.52g of citric acid, 2.6g of urea and 3.78mL of 3-aminopropyltriethoxysilane (Aladdin Reagent Company, CAS No.: 919-30-2, density: 0.95g / cm 3 ) was dissolved in a mixed solvent consisting of 10 mL of deionized water and 20 mL of anhydrous ethanol. The obtained mixed reaction solution was transferred to a Teflon-lined stainless steel autoclave, and placed in a blast drying oven at 200° C. for 12 hours. After the reaction product was centrifuged to separate the solid and the liquid, the solid was washed three times with deionized water and absolute ethanol, respectively, and dried in an oven at 50° C. overnight to obtain a pale yellow powder.

[0061] Depend on figure 1 It can be seen that the carbon dots-organosilicon composite fluorescent material prepared in this example emits green light under a 365 nm u...

Embodiment 3

[0063] A method for preparing a carbon dot-organosilicon composite fluorescent material in this embodiment, the method specifically includes the following steps:

[0064] 0.52g of citric acid, 5.2g of urea and 3.78mL of 3-aminopropyltriethoxysilane (Aladdin Reagent Company, CAS No.: 919-30-2, density: 0.95g / cm 3 ) was dissolved in a mixed solvent consisting of 10 mL of deionized water and 20 mL of anhydrous ethanol. The obtained mixed reaction solution was transferred to a Teflon-lined stainless steel autoclave, and placed in a blast drying oven at 200° C. for 12 hours. After the reaction product was centrifuged to separate the solid and the liquid, the solid was washed three times with deionized water and absolute ethanol, and dried in an oven at 50° C. overnight to obtain a yellow powder.

[0065] Depend on figure 1 It can be seen that the carbon dots-organosilicon composite fluorescent material prepared in this example emits yellow light under a 365 nm ultraviolet lamp. ...

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Abstract

The invention discloses a carbon dot-organic silicon composite fluorescent material as well as a preparation method and application thereof, and belongs to the technical field of optical functional materials. The preparation method comprises the following steps: adding a mixed reactant containing micromolecular organic acid and / or salt thereof, amino-containing organosilane and the like into a mixed solvent consisting of deionized water and absolute ethyl alcohol, uniformly mixing, and carrying out solvothermal reaction on the obtained mixed reaction solution at the reaction temperature of 180-200 DEG C for 4-12 hours; and after the reaction is finished, centrifuging, washing and drying the obtained product to obtain the carbon dot-organic silicon composite fluorescent material. The fluorescent light of the composite fluorescent material is regulated and controlled from blue light to orange light, and the composite fluorescent material has stable solid-state fluorescent light and can be used for constructing an efficient light-emitting solar light collector. The method has the advantages of easiness in preparation and purification, greenness, no toxicity and the like, and has good theoretical research and practical application values. The method for preparing the light collector is simple and convenient, and is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of optical functional materials, and particularly relates to a carbon dot-organosilicon composite fluorescent material and a preparation method and application thereof. Background technique [0002] Luminescent solar concentrator is a new type of solar light collection device, which can greatly reduce the use area of ​​single crystal silicon cells and thus reduce the cost of solar power generation. A typical luminescent solar concentrator consists of a fluorescent material and a waveguide material. The light absorbed and re-emitted by the fluorescent material reaches the silicon cell coupled at the edge through total internal reflection in the waveguide material, achieving low cost and high efficiency from solar energy to electricity. transformation. [0003] As a new type of fluorescent material, carbon dots have been favored by researchers for their non-toxic, green, easy preparation, high chemical stabil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/65C09K11/02H01L31/055
CPCC09K11/65H01L31/055Y02E10/50
Inventor 詹园武钰涵赵刘曦孙争光蒋选丰张玉红
Owner HUBEI UNIV
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