Solar cell antireflection film and preparation method thereof

A technology of solar cells and anti-reflection films, which is applied in the manufacturing of circuits, electrical components, and final products, etc., to achieve excellent passivation and anti-reflection effects, improve photoelectric conversion efficiency, and reliable anti-reflection effects.

Inactive Publication Date: 2019-05-03
YANCHENG CANADIAN SOLAR INC +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silicon nitride anti-reflection coating produced in the prior art cannot provide enough hydrogen ions to fully passivate the dangling bonds and internal defects on the surface of the silicon wafer.

Method used

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  • Solar cell antireflection film and preparation method thereof
  • Solar cell antireflection film and preparation method thereof
  • Solar cell antireflection film and preparation method thereof

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Embodiment Construction

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0022] Combine figure 1 , figure 2 , image 3 As shown, the solar cell anti-reflection film 100 involved in the present invention includes a first anti-reflection film layer 11 and a second anti-reflection film layer 12 that are sequentially stacked on the surface of the cell 200.

[0023] In a specific implementation process, the solar cell anti-reflection film 100 may be disposed on the front side of the battery cell 200 or on the back ...

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Abstract

The invention provides a solar cell antireflection film and a preparation method thereof. The solar cell antireflection film comprises a first antireflection film layer and a second antireflection film layer which are successively stacked on the surface of a cell piece, wherein the first antireflection film layer is disposed close to the cell piece and hydrogen ions are diffused in the first antireflection film layer. Thus, compared with a conventional silicon nitride antireflection film, the solar cell antireflection film can provide more hydrogen ions, and can fully passivate the surface dangling bonds and the internal defects of the silicon cell piece. The refractive index of the second antireflection film layer is smaller than the refractive index of the first antireflection film layerso that the solar cell antireflection film can achieve a reliable antireflection effect.

Description

Technical field [0001] The invention relates to the technical field of new energy, in particular to a solar cell anti-reflection film and a preparation method thereof. Background technique [0002] In order to improve the photoelectric conversion efficiency of solar cells, we can consider increasing the solar cell's absorption of sunlight to generate more photo-generated carriers. Anti-reflection films have been solar cells because they can reduce the reflection loss of light on the surface of solar cells. Hot spots in the research field. [0003] The function of the anti-reflection film is to use the optical path difference generated by the reflection of light on the upper and lower surfaces of the anti-reflection film, so that the interference of the two reflected lights is canceled, thereby weakening the reflection and increasing the incidence, so that the incident light meets a certain optical path condition to achieve the anti-reflection effect. At present, commercial crystal...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H01L31/0216H01L31/18
CPCY02P70/50
Inventor钱海龙李邦勇费正洪伏进文曹琨杜文轩王旭
OwnerYANCHENG CANADIAN SOLAR INC