Flexible solar concentrator with nano grains and preparation method of flexible solar concentrator

A solar concentrator and texture technology, applied in circuits, photovoltaic power generation, semiconductor devices, etc., can solve problems such as restricting the application environment and field, affecting light utilization efficiency, hard and fragile materials, etc., to improve photoelectric conversion efficiency, reduce The effect of light energy loss and improved utilization

Inactive Publication Date: 2020-05-15
紫石能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The current luminescent solar concentrators (LSC) are made of transparent plates as the carrier to disperse fluorescent materials, mainly glass or PMMA plexiglass. This type of concentrator has at least the following defects: ①The material is hard and fragile, heavy, and fixed installation Inconvenient, non-bendable, etc., wh

Method used

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  • Flexible solar concentrator with nano grains and preparation method of flexible solar concentrator
  • Flexible solar concentrator with nano grains and preparation method of flexible solar concentrator

Examples

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Example Embodiment

[0037] Example 1

[0038]Dissolving 1 g of cadmium selenide / cadmium sulfide (CdSe / CdS) quantum dots and 100 g in 500 mL of dimethylacetamide (DMAC, light transmittance greater than 90%) has the following (structural formula 1) transparent polymer The imides were mixed together, stirred for 1 hour to obtain a mixed slurry, left standing to remove air bubbles, spread the slurry on a glass plate, covered with a DVD disc, and heated in an oven at 80° C. for 4.5 hours. The product is taken out and cooled. The structure polyimide only needs to reflux the monomer in a common polar solvent, such as N-methylpyrrolidone, and does not need an ionic liquid auxiliary reaction, which is simple and low in cost. The light transmittance of the product is higher than 90%, and the glass transition temperature is higher than 311°C.

[0039]

Example Embodiment

[0040] Example 2

[0041] Dissolve 0.1 g of cadmium selenide / cadmium sulfide (CdSe / CdS) quantum dots with 100 g in 500 mL of N,N-dimethylformamide (DMF), a transparent polyimide having the following (structural formula II) Mix together, stir for 1 hour to obtain the mixed slurry, let stand, remove air bubbles, spread the slurry on a glass plate, cover the surface of the slurry with a DVD disc, and place it in an oven to heat at 80°C for 4.5 hours. The product is taken out and cooled. The polyimide of this structure only needs to reflux the monomer in a common polar solution solvent, such as N-methylpyrrolidone, and does not need an ionic liquid auxiliary reaction, which is simple and low in cost. The light transmittance of the product is higher than 90%, and the glass transition temperature is higher than 265°C.

[0042]

Example Embodiment

[0043] Example 3

[0044] 5 grams of cadmium selenide / cadmium sulfide (CdSe / CdS) quantum dots were mixed with 100 grams of transparent polyimide having the following (structural formula 1) dissolved in 500 mL of dimethylacetamide (DMAC), Stir for 1 hour to get the mixed slurry, let it stand, remove air bubbles, spread the slurry on a glass plate, cover the surface of the slurry with a DVD disc, and place it in an oven to heat at 80° C. for 3 hours. The product is taken out and cooled. The structure polyimide only needs to reflux the monomer in a common polar solvent, such as N-methylpyrrolidone, and does not need an ionic liquid to assist the reaction, and is simple and low in cost. The light transmittance of the product is higher than 90%, and the glass transition temperature is higher than 318°C.

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Abstract

The invention relates to a flexible solar concentrator with nano grains. The flexible solar concentrator comprises a transparent polyimide flexible matrix material, a quantum dot material is dispersedin the matrix material, and the nano grains are arranged on at least one surface of the matrix material. The condenser has the advantages of being soft and light, being easy to install, being bendable and the like, and is suitable for being used on various objects with irregular surfaces. According to the present invention, the nano grains are arranged on the surface of the solar concentrator, sothat the influence of light reflection and interference is further reduced, the light energy loss is reduced, and the light utilization efficiency is improved. The light-emitting solar concentrator has the excellent high-temperature resistance and weather resistance, and has durability in a long-term irradiation environment of the outdoor sunlight. The invention also relates to a preparation method of the solar concentrator.

Description

technical field [0001] The invention relates to the technical field of solar related components, in particular to a flexible solar concentrator and a preparation method thereof. Background technique [0002] The working principle of the solar concentrator LSC is: collect low-energy radiation in a large area, gather it into a small area of ​​high-energy radiation and output, gather more energy to the battery, improve the utilization rate of solar energy, reduce Solar PV system cost. [0003] There are three types of solar concentrating technologies: focusing type, reflective type and fluorescent concentrating technology. Among them, the fluorescent concentrating technology realizes the fluorescent concentrating effect of high quantum efficiency, thereby maximizing the photoelectric conversion efficiency of solar cells per unit area. Fluorescence concentrating technology can use sunlight incident at any angle without the need for a sun tracking device. Compared with ordinary ...

Claims

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Application Information

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IPC IPC(8): H01L31/054H01L31/18
CPCH01L31/054H01L31/18Y02E10/52Y02P70/50
Inventor 王权刘琦
Owner 紫石能源有限公司
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