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Laser scribing method and solar cell

A solar cell and laser technology, which is applied in the field of laser scribing and solar cells, can solve the problems of multiple sub-cell disconnection and laser scribing grooves that cannot meet the demand.

Inactive Publication Date: 2022-01-07
HUANENG CLEAN ENERGY RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In view of this, the purpose of the present application is to provide a laser scribing method and a solar cell, which can solve the problem that the laser scribing grooves formed by laser scribing cannot meet the demand, resulting in disconnection between multiple sub-cells

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Embodiment Construction

[0032] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings.

[0033] In the following description, a lot of specific details are set forth in order to fully understand the application, but the application can also be implemented in other ways different from those described here, and those skilled in the art can do it without violating the content of the application. By analogy, the present application is therefore not limited by the specific embodiments disclosed below.

[0034] Secondly, the present application is described in detail in combination with schematic diagrams. When describing the embodiments of the present application in detail, for the convenience of explanation, the cross-sectional view showing the device structure will not be partially enlarged...

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Abstract

The invention provides a laser scribing method and a solar cell. A first electrode layer and a photoelectric conversion layer located on the first electrode layer are arranged on a substrate, the first electrode layer is provided with a first laser scribing groove, then laser scribing is performed on the photoelectric conversion layer to obtain a second laser scribing groove, and the second laser scribing groove is used for later forming electrode contact between the sub-electrodes, and series connection between the multiple sub-electrodes is achieved. An obtuse angle is formed between the first side wall, close to the first laser scribing groove, of the second laser scribing groove and the bottom of the second laser scribing groove, so that when a second electrode layer is formed on the photoelectric conversion layer, the obtuse angle is formed between the first side wall of the second laser scribing groove and the bottom of the second laser scribing groove, therefore, the second electrode layer can uniformly cover the first side wall and the bottom of the second laser scribing groove, the situation that the second electrode layer is discontinuous on the first side wall and the bottom of the second laser scribing groove is avoided, and the problem of open circuit among a plurality of sub-cells is avoided.

Description

technical field [0001] The invention relates to the field of semiconductors, in particular to a laser scribing method and a solar cell. Background technique [0002] Currently, semiconductor devices with a stacked structure are developing rapidly, for example, solar cells with a stacked structure can be applied in real life. [0003] In order to improve the application performance of solar cells in real life, laser scribing can be performed for large-area solar electrodes to realize the division of large-area solar cells into multiple sub-cells in series. [0004] However, the existing laser scribing will result in the formation of laser scribed grooves that cannot meet the requirements, which will lead to disconnection between multiple sub-cells. Contents of the invention [0005] In view of this, the purpose of the present application is to provide a laser scribing method and a solar cell, which can solve the problem that the laser scribing grooves formed by laser scrib...

Claims

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Application Information

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IPC IPC(8): B23K26/362H01L31/0463H01L31/0465H01L31/18
CPCB23K26/362H01L31/0463H01L31/0465H01L31/18Y02E10/50Y02P70/50
Inventor 肖平李新连赵志国赵东明张赟夏渊秦校军李梦洁丁坤
Owner HUANENG CLEAN ENERGY RES INST
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