Solar energy conversion material, solar cell encapsulant comprising same, and solar cell comprising same

A solar energy conversion and solar cell technology, which is applied in luminescent materials, circuits, photovoltaic power generation, etc., can solve the problems of interfering with solar cell light absorption, reducing the initial output of solar cell modules, reducing the overall output of solar cells or solar cell modules, etc. Guaranteed long-term output, reduced power generation cost, high output and durability

Pending Publication Date: 2022-02-25
HANWHA TOTAL ENERGIES PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the case of ultraviolet light absorbers, light near the ultraviolet region cannot be incident into the solar cell, and thus the overall initial output of the solar cell module may undesirably decrease
In addition, when inorganic particles such as silicon dioxide or magnesium hydroxide are introduced to improve insulation or induce moisture trapping, the durability of the encapsulation is somewhat improved, but due to the solar radiation incident on the front surface of the solar cell Scattering or reflection of light, which may interfere with the light absorption of solar cells
Therefore, when various functional additives are added to solve the above problems, the durability of the encapsulation can be improved, but the overall output of the solar cell or solar cell module may be reduced

Method used

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  • Solar energy conversion material, solar cell encapsulant comprising same, and solar cell comprising same
  • Solar energy conversion material, solar cell encapsulant comprising same, and solar cell comprising same
  • Solar energy conversion material, solar cell encapsulant comprising same, and solar cell comprising same

Examples

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preparation example 1

[0132] Preparation Example 1: Preparation of solar energy conversion material (aluminum hydroxide precursor)

[0133] 10 g of aluminum acetate was mixed with 100 ml of 1-octadecene solvent, and then thermal decomposition reaction was performed at 300° C. with stirring for 30 minutes. After the reaction was completed, aluminum hydroxide was separated by centrifugation and redispersed in 10 ml of toluene solvent. image 3 The UV-Vis spectrum and photoluminescence spectrum of the luminescent aluminum hydroxide solution thus prepared are shown, where the dotted line represents the absorption and the solid line represents the photoluminescence spectrum. Examples based on the aluminum hydroxide content were set as Examples 1 and 2, respectively.

preparation example 2

[0134] Preparation Example 2: Preparation of solar energy conversion materials (aluminum hydroxide precursor + lanthanide ions)

[0135] 10 g of aluminum acetate was mixed with 10 ml of 1-octadecene solvent. To this mixed solution, ytterbium(III) acetate hydrate (from the above-mentioned near-infrared emitting lanthanide ions) was added in an amount of 0.2% by weight compared to the aluminum precursor, and then heated at 300°C under stirring. The decomposition reaction was 30 minutes. After the reaction was completed, aluminum hydroxide was separated by centrifugation and redispersed in 10 ml of toluene solvent. The solar conversion material synthesized in this way was used in Example 3, and the solar conversion material synthesized without adding ytterbium(III) acetate hydrate was used in Comparative Example 5.

preparation example 3

[0136] Preparation Example 3: Preparation of solar energy conversion material (aluminum hydroxide + aromatic ring compound)

[0137] 10 g of aluminum acetate was mixed with 100 ml of 1-octadecene solvent, and then thermal decomposition reaction was performed at 300° C. with stirring for 30 minutes. After the reaction was complete, the aluminum hydroxide was separated by centrifugation and redispersed in 10 ml of toluene.

[0138] In order to control the photoluminescent properties, 3-hydroxy-2-naphthoic acid was added as an aromatic ring compound in an amount of 5 wt% compared with aluminum acetate as an aluminum precursor, and the Thermal decomposition reaction for 30 minutes, then separation and purification.

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Abstract

The present invention relates to a solar energy conversion material with improved efficiency, and a solar cell comprising same. According to one embodiment of the present invention, the present invention provides a solar energy conversion material comprising an aluminum hydroxide precursor, and a lanthanide ion or a derivative containing same.

Description

technical field [0001] The present invention relates to a solar energy conversion material and solar cell encapsulation with improved efficiency and a solar cell comprising the same. Background technique [0002] The most commonly commercialized solar cells are made of silicon materials, and about 50% of the light cannot be utilized due to the mismatch between the natural solar spectrum and the band gap of silicon-based materials. That is, the natural solar spectrum has a broad distribution of wavelengths from ultraviolet light to infrared light (280 to 2500 nm, 0.5 to 4.4 eV), while silicon solar cells can only absorb some of the wavelengths of ultraviolet light and visible light. [0003] Recently, in order to remedy this, studies have been proposed to use solar conversion materials to improve the light conversion efficiency of natural sunlight and silicon solar cells (Chem. Soc. Rev., 2013, 42, 173). That is, the proposed research is the introduction of solar energy conv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/055H01L31/048
CPCH01L31/0481H01L31/055C09K11/77C09K11/641C09K11/7706C09K11/02C01F7/30C01P2002/84C01P2002/54C01P2006/40C08K3/22C08K2003/2224C08K2201/005C08K3/105C08K9/02C08J5/18C08J2323/08C09K11/06C08L23/0853C01F17/34C01P2004/61C01P2004/62C01P2004/64C08K2003/2227C08K2201/011
Inventor 金基世韩在爀李度勳金俊奇金韺来白太锺金敏慧申孝柱
Owner HANWHA TOTAL ENERGIES PETROCHEMICAL CO LTD
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