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A preparation method of fluorescent solar collector based on carbon quantum dots

A technology of carbon quantum dots and light collectors, which is applied in the field of preparation of fluorescent solar light collectors, can solve the problem of poor photo-chemical stability of all-inorganic perovskite quantum dots, reduce the optical performance of all-inorganic perovskite quantum dots, and have no Disclose issues such as mass production of carbon quantum dots to achieve the effects of excellent photon transport performance, good luminescence stability, and high stability

Active Publication Date: 2020-11-20
NINGBO UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the widely used quantum dot luminescent centers have the following problems: (1) Inorganic quantum dots with good luminescent properties, such as cadmium sulfide and lead sulfide, are heavy metals with high toxicity, which greatly limits their application range ; (2) Copper indium selenide sulfur quantum dots and silicon quantum dots contain a small amount of toxicity, and the organic solvent used in their synthesis process contains high toxicity; (3) The photo-chemical stability of all inorganic perovskite quantum dots is poor , the optical properties of all-inorganic perovskite quantum dots will be greatly reduced after exposure to oxygen, water and light
At present, there are no research reports on the mass production of carbon quantum dots based on the hydrothermal decomposition method at home and abroad, and then the preparation method of carbon quantum dot-doped fluorescent solar concentrators

Method used

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  • A preparation method of fluorescent solar collector based on carbon quantum dots
  • A preparation method of fluorescent solar collector based on carbon quantum dots
  • A preparation method of fluorescent solar collector based on carbon quantum dots

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The preparation method of the fluorescent solar concentrator based on carbon quantum in this embodiment comprises the following steps,

[0030] (1) Preparation of carbon quantum dots: Dissolve 4g of glucose in 50mL of water and add to the autoclave, heat and stir continuously until the autoclave (the autoclave is sealed by Teflon, the capacity of the autoclave is 40-60mL) to form a clear solution, keep at 160°C for 5min, then add 20mL of deionized water, continue heating for 5-15min, cool the solution naturally, centrifuge the solution to collect the precipitate, and put the precipitate at a molecular weight cut-off of Dialyze in a 400-600Da dialysis bag for 1-2 days, and finally wash thoroughly with distilled water and absolute ethanol for 2-4 times to obtain carbon quantum dots CQD-5;

[0031] (2) Preparation of fluorescent solar concentrator: Clean the glass mold with absolute ethanol, and then wipe it with absorbent paper until the surface of the mold is dry; add 10...

Embodiment 2

[0033] Same as the above example 1, the difference is that in step (1), the solution is kept at 160° C. for 10 min to obtain carbon quantum dots CQD-10.

Embodiment 3

[0035] Same as the above example 1, the difference is that in step (1), the solution is kept at 160°C for 20 minutes to obtain carbon quantum dots CQD-20, and the carbon quantum dots added in step (2) are CQD-20.

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Abstract

The invention discloses a preparation method of a fluorescence solar light collector based on carbon quantum dots. The preparation method is characterized by comprising the following steps: (1) preparing carbon quantum dots in different sizes through a hydrothermal decomposition method; (2) dissolving carbon quantum dots and photoinitiator into a mixed solution formed by mixing methyl propane acidglycerol trilaurate and dimethyl acrylic ethylene glycol diacrylate, ultrasonically treating the mixed solution for 3-5min, oscillating for 1-3min on a vortex mixer in a mixed way, placing in a vacuum environment to drying for 2-4h, heating for 20-40min at constant temperature of 50-70 DEG C at water bath, and then pouring the mixed solution into a self-made glass mold, exhausting air for 2-4h ina vacuum drying oven, curing by adopting a water bath heating method or the irradiation of an ultraviolet lamp, and cutting and polishing after curing and demolding. The preparation method has the advantages that the reabsorption loss can be effectively reduced, the device light collecting efficiency is greatly improved, the cost is low, the biological compatibility is good, and the light stability of the device is good.

Description

technical field [0001] The invention belongs to the field of photoelectric luminescence technology, and in particular relates to a preparation method of a fluorescent solar collector based on carbon quantum dots. Background technique [0002] Traditional light concentrators are mainly composed of mirrors and convex lens arrays. Although the structure is simple, after a long period of sunshine, the traditional light concentrator will produce obvious thermal effects, which will greatly affect the service life of photovoltaic devices. Therefore, it is necessary to equip a cooling system to reduce the impact of thermal effects. At the same time, since the incident angle of sunlight is constantly changing, a sun tracking system is required to track the incident sunlight in real time. The cooling system and the use of the sun tracking system greatly increase the cost and laying site of traditional light concentrators. On the one hand, light concentrators can effectively improve ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/055C09K11/65B82Y20/00B82Y40/00
CPCY02E10/52
Inventor 束俊鹏张晓伟张涵车锦铭陈若望陈凯旗张碧莹
Owner NINGBO UNIV
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