Multi-junction solar cell and manufacturing method thereof

A technology of solar cells and manufacturing methods, applied in the direction of final product manufacturing, sustainable manufacturing/processing, circuits, etc., can solve the problems of complex growth technology, high price and few gallium arsenide cells, etc., and achieve low-cost effects

Inactive Publication Date: 2012-07-18
朱忻
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  • Claims
  • Application Information

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Problems solved by technology

The third generation is high-efficiency multi-junction solar cells represented by gallium arsenide solar cells, which have been used in the space field for a long time, but due to the relatively high price of gallium arsenide cells, they were rarely used in the past Grou

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  • Multi-junction solar cell and manufacturing method thereof
  • Multi-junction solar cell and manufacturing method thereof
  • Multi-junction solar cell and manufacturing method thereof

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Embodiment Construction

[0022] The technical solutions of the present invention will be further specifically described below through the embodiments and in conjunction with the accompanying drawings. In the specification, the same or similar reference numerals designate the same or similar components. The following description of the embodiments of the present invention with reference to the accompanying drawings is intended to explain the general inventive concept of the present invention, but should not be construed as a limitation of the present invention.

[0023] refer to figure 2 , showing a multi-junction solar cell according to the invention comprising:

[0024] A double-junction cell composed of a GaAs sub-cell 120 and a GaInP sub-cell 130, and the GaAs sub-cell 120 has a first metal pattern 121 ( Figure 3a shown in ); Si sub-cell 110, which has a thickness of about 500nm second metal pattern 111 ( Figure 3a shown in ), the second metal pattern 111 at least partly corresponds to the fi...

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Abstract

The invention discloses a multi-junction solar cell, including the components as following: a double-junction solar sell comprised of a GaAs sub cell and a GaInP sub cess, wherein the GaAs sub cell possesses a first metal pattern; an Si sub sell, which possesses a second metal pattern, wherein the second metal pattern is corresponding to at least part of the first metal pattern; the conductive bonding layer is formed by the mechanical bonding of the first metal pattern and the second metal pattern, and the conductive bonding layer enables the Si sub cell electrically connected to the GaAs sub cell. Because a Ge sub cell is replaced by the Si sub cell, the multi-junction solar cell provided in the invention can effectively utilizes the band with energy of 1 eV, and thereby the total conversion efficiency can be further enhanced. In addition, a Ge base with high cost is no more required, and the multi-junction solar cell provided in the invention can be prepared with lower cost.

Description

technical field [0001] The invention relates to a multi-junction solar cell and a manufacturing method thereof. Background technique [0002] As a clean energy source, solar cells have always been the most dynamic research field. Solar cells can be roughly divided into three generations. The first generation is silicon crystal battery, which can be roughly divided into two types: monocrystalline silicon and polycrystalline silicon, and its commercial application history is the longest. The second generation is thin-film solar cells, which are mainly composed of amorphous silicon and group II compound semiconductors, and are often used in building-integrated photovoltaic power generation. The third generation is high-efficiency multi-junction solar cells represented by gallium arsenide solar cells, which have been used in the space field for a long time, but due to the relatively high price of gallium arsenide cells, they were rarely used in the past Ground and household c...

Claims

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Application Information

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IPC IPC(8): H01L31/0687H01L31/028H01L31/0304H01L31/18
CPCH01L31/18H01L31/028H01L31/06875Y02E10/544H01L31/0304H01L31/0687Y02E10/50H01L31/1892H01L25/045H01L31/043Y02E10/547Y02P70/50
Inventor 王伟明朱忻杨军
Owner 朱忻
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