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Solar spectral wavelength conversion material and solar cell comprising same

A wavelength conversion material and solar cell technology, applied in the field of solar cells, can solve problems such as difficult c-Si cells

Pending Publication Date: 2022-04-12
HANWHA TOTAL ENERGIES PETROCHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this article, the efficiency of the single cell was improved by 8%, but using an expensive converter such as CIGS makes the disadvantage that it is still difficult to commercialize it as a material for c-Si cells

Method used

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  • Solar spectral wavelength conversion material and solar cell comprising same
  • Solar spectral wavelength conversion material and solar cell comprising same
  • Solar spectral wavelength conversion material and solar cell comprising same

Examples

Experimental program
Comparison scheme
Effect test

preparation example 1

[0074] Preparation Example 1: Preparation of Luminescent Aluminum Hydroxide and Solar Spectrum Wavelength Conversion Material

[0075] In a 3-neck glass bottle, add 1.0 to 3.0 g of aluminum acetate (aluminum precursor), 0.01 to 0.1 g of 1-pyrenecarboxylic acid, and 50 to 300 mL of 1-octadecene, stir under vacuum, and Heating to 100°C for pretreatment. After maintaining the above state for about 1 hour, air and moisture removal and purging with nitrogen or argon were performed in a vacuum state. After that, heat is applied to the reactant to about 270 to 320° C. and kept for 2 to 4 hours for thermal decomposition. Afterwards, cooling is performed at room temperature, followed by post-processing to prepare solar spectrum wavelength conversion materials.

[0076] [post-processing]

[0077] The solar spectrum wavelength conversion material was washed with acetone and toluene, followed by storage.

[0078] ※Information about raw materials used - aluminum acetate (MW: 162.08g / mo...

Embodiment 1

[0087] Example 1: Manufacture of solar cells coated with solar spectrum wavelength conversion materials

[0088] A 6-inch monocrystalline silicon solar cell was used.

[0089] The solution of the solar spectrum wavelength conversion material prepared according to Preparation Example 1 was applied to the surface of a 6-inch monocrystalline silicon cell using a spray coating method. When so manufactured, the solar spectrum wavelength converting material is on the surface of the solar cell and when the EQE (External Quantum Efficiency) is measured, it can be seen how the efficiency of the solar cell is changed by the applied solar spectrum wavelength converting material.

Embodiment 2

[0092] Example 2: Fabrication of Solar Cells Including Solar Spectrum Wavelength Conversion Materials

[0093] The 4 solar cells coated with the solar spectrum wavelength conversion material prepared in Example 1 were welded into 2×2 to manufacture a solar cell module.

[0094] A silicon solar cell module is manufactured by lamination after it is laminated in the order of glass / encapsulation material / solar cell conversion material / solar cell / encapsulation material / back sheet starting from the front surface on which light is incident. In the solar cell module thus manufactured, the luminescent aluminum hydroxide is located between the encapsulation material and the interface of the solar cell. As the solar spectrum wavelength conversion material constituting the solar cell, the luminescent aluminum hydroxide prepared by the above method was used.

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Abstract

Provided are a solar spectral wavelength conversion material having improved efficiency and a solar cell including the same. According to one embodiment of the present invention, the present invention provides a solar spectral wavelength conversion material comprising an aluminum hydroxide precursor anchored with 1-pyrenecarboxylic acid. The solar spectral wavelength conversion material also includes an aromatic cyclic compound or a derivative including the same.

Description

technical field [0001] Embodiments relate to solar spectrum wavelength conversion materials with improved efficiency and solar cells comprising the same. Background technique [0002] The most commonly commercialized solar cells are fabricated with a single silicon material and do not utilize about 30% of the light due to the mismatch between the natural solar spectrum and the band gap of the single silicon material. That is, the natural solar spectrum has a wide distribution (280 to 2500nm and 0.5 to 4.4eV) from ultraviolet to infrared wavelength regions, while silicon solar cells can only absorb some wavelengths in ultraviolet and visible wavelength regions. [0003] Recently, studies on the utilization of solar spectral converters have been proposed to address the limitations and improve the light conversion efficiency of natural sunlight and silicon solar cells (Chem. Soc. Rev., 2013, 42, 173). That is, introducing a solar spectrum converter into a silicon solar cell th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42
CPCC09K11/06H01L33/502H01L31/055B82Y20/00Y02E10/549H01L31/0328C09K11/08C09K11/641H01L31/0481H01L31/02167H01L31/02168H01L33/56B82Y40/00H01L2933/0041C09K2211/14
Inventor 申孝柱金韺来柳渊植
Owner HANWHA TOTAL ENERGIES PETROCHEMICAL CO LTD