Solar cell preparation method

A solar cell and cell technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as solar cell efficiency loss, achieve good quality and reduce splinter loss.

Active Publication Date: 2021-06-25
苏州联诺太阳能科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on this, it is necessary to provide a solar cell preparation method for the problem that the efficiency of solar cells in the prior art will be lost after scribing

Method used

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Embodiment Construction

[0034] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0035] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0036] It will be understood that when an element or layer is referred to as being "on," "adjacent," "con...

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Abstract

The invention relates to a solar cell preparation method. The method comprises the steps of providing a substrate; texturing the substrate and cleaning for the first time to form a textured piece; scribing the textured piece to form a scribing groove; cleaning the textured piece after scribing for the second time, and removing slag generated during scribing; forming cell film layer on the textured piece after scribing and secondary cleaning so as to form a cell piece; and splitting the cell piece along the scribing groove to form a plurality of solar cells. The cell efficiency can be effectively improved.

Description

technical field [0001] The present application relates to the field of photovoltaic technology, in particular to a method for preparing a solar cell. Background technique [0002] With the promotion of large-size silicon wafers, reducing internal loss is the most effective technical implementation route, and the technology of low internal loss sliced ​​battery components (half-cell, patchwork, shingled and other component products) technology has unique advantages in large-scale applications. [0003] However, there are currently two commonly used solar cell slicing technologies in the industry: conventional laser scribing technology and non-destructive laser scribing technology. After half-cutting, the efficiency of the solar cell will be lost, such as the efficiency loss of conventional passivated emitter and back local contact cell (PERC cell) ≤ 0.15%, and the efficiency loss of solar cell ≤ 0.3%. Contents of the invention [0004] Based on this, it is necessary to pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/0236
CPCH01L31/1804H01L31/02363Y02P70/50Y02E10/547
Inventor 不公告发明人
Owner 苏州联诺太阳能科技有限公司
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