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Method for manufacturing solar cell

一种太阳电池、制造方法的技术，应用在最终产品制造、可持续制造/加工、电路等方向，能够解决难以调整划线强弱、裂纹、膜去除残留等问题

Inactive Publication Date: 2011-04-20
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the scribing process using the above-mentioned laser irradiation and / or metal needles, etc., it is difficult to adjust the intensity of scribing. Therefore, for example, when the pressure of the metal needle is strong, the lower film may be damaged.
On the other hand, when the pressing force is weak, the film is not completely removed and remains, causing a short circuit or high resistance
In addition, when there are irregularities on the surface of the film to be scribed, when a metal needle or the like is pressed down to make contact with it, the metal needle does not evenly contact the surface of the film, so stress concentrates on the concave or convex portions, thereby There is a problem that cracks are generated in the film etc.

Method used

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Examples

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Effect test

Deformed example 1

[0061] In the above-described embodiments, the first to third sacrificial layers 51 to 53 are formed, but it is not necessary to form all the first to third sacrificial layers 51 to 53 . For example, it is also possible to appropriately select the first to third sacrificial layers 51 to 53 in consideration of the characteristics of each layer of the first electrode layer 12, the semiconductor layer 13, and the second electrode layer 14 and / or the scribe line for each layer, etc. Either sacrificial layer is formed. For example, the first sacrificial layer 51 may also be formed. By removing the first sacrificial layer 51 and the first electrode layer 12 formed on the first sacrificial layer 51, the first electrode layer 12 is divided into units 40. For the semiconductor layer 13 For the second electrode layer 14, the semiconductor layer 13 or the second electrode layer 14 is divided into units of cells 40 by metal needles and / or laser irradiation. In this way, the degree of fre...

Deformed example 2

[0063]In the above-mentioned embodiments, the configuration and the like of the CIGS type solar cell 1 that receives light from the second electrode layer 14 side have been described, but a CIGS type solar cell that can receive light not only from the second electrode layer 14 side but also from the substrate 10 side may be used. battery1. In addition, in this case, a transparent substrate is used as the substrate 10 . For example, glass substrates, PET, organic transparent substrates, etc. By using a transparent substrate, light can be received from the substrate 10 surface. In addition, the first electrode layer 12 is a transparent electrode layer, for example, a transparent electrode (TCO: Transparent Conducting Oxides) layer such as ZnOAl. This is because incident light from the substrate 10 side is transmitted to the semiconductor layer 13 by forming a transparent electrode layer. Also in this way, the same effect as above can be obtained.

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Abstract

The invention discloses a method for manufacturing solar cell aiming at providing a solar cell which can undergo reduction marking-out treatment and is characterized by higher reliability. The solar cell herein comprises a substrate, a first electrode layer, a semiconductor layer, and a second electrode layer. The method for manufacturing the solar cell herein comprises a process for forming the first electrode layer on the said substrate; a process for segmenting the first electrode layer to eliminate one portion of the first electrode layer and dividing the first electrode layer; and a process for forming a first sacrifice layer prior to the process for forming the first electrode layer, wherein the first sacrifice layer is partially formed on the surface of the substrate which partially corresponds to the portion of the first electrode layer to be eliminated, In the process for forming the first electrode layer, the said substrate and the first sacrifice layer form the said first electrode layer. In the process for segmenting the first electrode layer, the said first sacrifice layer and the said first electrode layer which is formed on the first sacrifice layer are eliminated.

Description

technical field [0001] The present invention relates to a method of manufacturing a solar cell. Background technique [0002] A solar cell converts light energy into electric energy, and various structures are proposed according to the semiconductor used. In recent years, attention has been paid to CIGS type solar cells whose manufacturing process is simple and whose high conversion efficiency can be expected. A CIGS solar cell includes, for example: a first electrode film formed on a substrate; a thin film comprising a compound semiconductor (copper-indium-gallium-selenium compound) layer formed on the first electrode film; and a second electrode film formed on the thin film. Electrode film. A second electrode film is formed in the groove from which a part of the thin film is removed, and the first electrode film and the second electrode film are electrically connected. (For example, refer to Patent Document 1). [0003] [Patent Document 1] JP-A-2002-319686 [0004] In...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18
CPCH01L31/0322H01L31/022425Y02E10/541Y02P70/50
Inventor 傳田敦斋藤广美
Owner SEIKO EPSON CORP