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Preparation method for texture of solar cell

A solar cell and suede technology, which is applied in the field of preparation of solar cell suede, can solve the problem that the reflectance of solar cell suede is reduced without any prediction, and achieve the effect of optimizing the reflectance

Inactive Publication Date: 2012-07-04
徐荣
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AI Technical Summary

Problems solved by technology

For the preparation of the suede surface on the light-receiving side of the solar cell, there is no technical mention of using nanoimprinting technology for processing, especially the nanoimprinting technology has no prediction for the reduction of the reflectivity of the suede surface of the solar cell. Based on this , the present invention creatively proposes a method for preparing the textured surface of solar cells using nanoimprint technology

Method used

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  • Preparation method for texture of solar cell
  • Preparation method for texture of solar cell
  • Preparation method for texture of solar cell

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Embodiment Construction

[0032] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described with reference to the accompanying drawings. Wherein, the same parts adopt the same reference numerals.

[0033] Based on the description of the relevant prior art in the background art, in the following embodiments of the present invention, the principle of the nanoimprint technology will not be described in detail in order to save space.

[0034] The preparation method of a kind of solar cell suede according to a specific embodiment of the present invention can refer to Figures 1A-1F The process is described in detail, as shown in the figure.

[0035] It should be particularly emphasized that in the prior art, nanoimprinting technology is implemented on the side opposite to the light-receiving surface of the solar cell silicon wafer, and its main purpose is to form variou...

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Abstract

The invention provides a preparation method for a texture of a solar cell. The texture of the solar cell is formed on the surface at one side of an illuminated face of a solar cell silicon wafer. The preparation method adopts a nanoimprinting way, before the texturing process, prepared masking material on a pattern template is transferred to the surface of the solar cell silicon wafer in an imprinting way to form a masking layer of the texturing process, then the texturing is carried out in a wet etching or plasma etching method. The preparation method for the texture of the solar cell can better control the size and shape of the texture and achieves the effect of optimized reflectivity; in addition, the optimum reflectivity can reach below 1%.

Description

technical field [0001] The invention relates to a method for preparing a suede surface of a solar cell, and belongs to the field of solar cell manufacturing. Background technique [0002] A solar cell is a semiconductor component that converts sunlight into electricity, so the efficiency of a solar cell is closely related to the light absorption of the solar surface. In the manufacturing process of crystalline silicon solar cells, the suede surface is usually prepared on the side of the solar cell that receives light energy (light-receiving surface) to reduce the reflection of sunlight on the light-receiving surface, thereby increasing the number of reflections of irradiated light on the surface of crystalline silicon , improve the absorption efficiency of light, so as to achieve the purpose of higher conversion efficiency. [0003] At present, the surface of solar cells is mainly prepared by wet chemical etching, that is, for monocrystalline silicon with uniform crystal or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 杨华
Owner 徐荣