Solar concentrator with reflection resistance and high transmittance and preparation method thereof

A solar concentrator, high transmittance technology, applied in solar collectors, solar thermal energy, solar thermal power generation, etc., can solve the problem of luminescent solar concentrators and anti-reflection films with less research, complex cost and testing methods, etc. To achieve the effect of clear experimental results, simple preparation method and good thermal stability

Inactive Publication Date: 2021-09-21
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In recent years, the research on rare earth complexes as luminescent substances to prepare solar concentrators has gradually increased, and the research results in the field of luminescent materials have also been published in the newspapers. Less, the research on the concentrator is more focused on improving its photoelectric conversion efficiency, the cost involved and the test method are more complicated

Method used

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  • Solar concentrator with reflection resistance and high transmittance and preparation method thereof
  • Solar concentrator with reflection resistance and high transmittance and preparation method thereof
  • Solar concentrator with reflection resistance and high transmittance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Weigh 4mmol (740mg) of the ligand 2mCND into the reactor, add 20ml of absolute ethanol, sonicate, then add 40ml of 0.1mol / L NaOH ethanol solution into the reactor, and continue to sonicate for 30min until most Dissolves and becomes almost a clear liquid.

[0056] (2) After heating the solution oil bath obtained above for half an hour, add 10ml of 0.1mol / L EuCl 3 Ethanol solution, a white precipitate appeared after stirring for 12 hours.

[0057] (3) Ultrasonicate, centrifuge, wash the solution containing the white precipitate obtained above, and dry it in an oven (70°C) to obtain a luminescent rare earth complex (Eu(2mCND) 4 Na).

[0058] figure 1 Infrared absorption spectrum of rare earth complex powder. It can be seen from the figure that one rare earth ion is coordinated with four ligands, which proves the structure of the rare earth complex.

Embodiment 2

[0060] (1) get the rare earth complex Eu(2mCND) that embodiment 1 makes 4 Na powder 25mg was dissolved in 10mL DMF to obtain Eu(2mCND) 4 Na / DMF solution.

[0061] (2) Put 1 g of polymethyl methacrylate powder into a reactor, add 10 mL of DMF, and heat in an oil bath at 70° C. for 30 min until the polymethyl methacrylate is completely dissolved to obtain a PMMA / DMF solution.

[0062] (3) Take Eu(2mCND) in step (1) 4 Take 1 mL of Na / DMF solution, take 1 mL of PMMA / DMF solution obtained in step (2), and mix the two evenly. The mixed solution was also bright red under UV light.

[0063] The resulting 2mL Eu(2mCND) 4 The Na / PMMA solution is evenly coated on the acrylic glass of 12.5 square centimeters, and heated at 90°C for 90 minutes until the solution on the acrylic solidifies into a transparent film with a thickness of 774nm. The effect of the optical waveguide can be seen from the side of the film under the action of the fluorescent lamp , showing red light.

[0064] F...

Embodiment 3

[0066] Step (2) (3) is identical with step (2) (3) in embodiment 2, and step (1) is different from step (1) in embodiment 2 in that the rare earth complex Eu ( 2mCND) 4 Na powder, other conditions remain unchanged.

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Abstract

The invention relates to a solar concentrator with reflection resistance and high transmittance and a preparation method thereof. The concentrator is composed of a base body, a light-emitting film and a silicon dioxide anti-reflection coating from bottom to top in sequence. The light-emitting film comprises a light-emitting rare earth complex Eu(2mCND)4Na and polymethyl methacrylate. According to the preparation method, Eu(2mCND)4Na and polymethyl methacrylate are dissolved in DMF, acrylic glass is coated with the solution, then the surface of the solar concentrator is coated with the anti-reflection liquid, and the solar concentrator with the reflection resistance and the high transmittance is obtained. The fluorescence intensity of the prepared rare earth complex is visible to naked eyes, the light stability is good, red light is not quenched after the rare earth complex is dissolved in a DMF solution, and the red light is still stable after the surface of a condenser is coated with an acid-base mixed anti-reflection solution.

Description

technical field [0001] The invention belongs to the field of rare earth luminescent materials, and relates to a luminescent transparent film and an anti-reflection film, in particular to the preparation of a solar concentrator with anti-reflection and high transmittance. Background technique [0002] With the enhancement of human awareness of energy conservation and emission reduction, building-integrated photovoltaic (BIPV) has been widely used on roofs. However, when concentrated on high-rise buildings, integrated roof systems are not suitable to provide the total energy consumption of the roof area. Therefore, it is highly desirable to explore a BIPV system with both energy-saving and space-saving functions. Fluorescent solar concentrator (LSC) is an optical device that disperses a photoactive substance with a fluorescent effect in a transparent substrate, where the transparent substrate can be plexiglass, plastic or glass, and the fluorescent active substance It can be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08J7/06C08L33/12C09D133/12C09D5/22C09D1/00C09D7/65F24S23/70C07F5/00C09K11/06
CPCC08J7/0423C08J7/06C09D133/12C09D5/22C09D1/00C09D7/65F24S23/82C07F5/003C09K11/06F24S2023/86C09K2211/182C08J2333/12C08J2433/12C08K5/0091Y02E10/40
Inventor 李焕荣陈静蕾王元谢广敏
Owner HEBEI UNIV OF TECH
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