Preparation method of conventional single-crystal one-off printed solar cell

A solar cell and cell technology, applied in printing, circuit, photovoltaic power generation, etc., can solve the problem of low cell performance, and achieve the effect of improving spectral responsivity, improving product quality, and improving conversion efficiency

Inactive Publication Date: 2019-03-05
TONGWEI SOLAR ENERGY (CHENGDU) CO LID
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The existing preparation process of crystalline silicon solar cells results in low performance of cells

Method used

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  • Preparation method of conventional single-crystal one-off printed solar cell
  • Preparation method of conventional single-crystal one-off printed solar cell
  • Preparation method of conventional single-crystal one-off printed solar cell

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Embodiment Construction

[0047] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with specific embodiments.

[0048] The invention provides a method for preparing a conventional single-crystal single-print solar cell sheet, comprising the following steps:

[0049] A. Texturing. The preparation of the monocrystalline silicon texture is to use the anisotropic etching of silicon to form millions of tetrahedral pyramids, that is, pyramid structures, on the silicon surface per square centimeter. Due to the multiple reflection and refraction of the incident light on the surface, the absorption of light is increased, and the short-circuit current and conversion efficiency of the battery are improved. The anisotropic etching solution for silicon usually uses a hot alkaline solution, and the available alkalis include sodium hydroxide, potassium hydroxide, lithium hyd...

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Abstract

The invention discloses a preparation method of a conventional single-crystal one-off printed solar cell. The preparation method comprises the following steps: step A, texturing; step B, diffusing; step C, etching; step D, annealing; step E, reducing the light attenuation; step F, plating an antireflection film; and step G, printing; in the step D, oxygen-free annealing is adopted in the annealing; and knotless printing is adopted in the printing in the step G.

Description

technical field [0001] The invention relates to a method for preparing solar cells from conventional monocrystalline silicon. Background technique [0002] A solar cell, also known as a photovoltaic cell, is a semiconductor device that converts the sun's light energy directly into electrical energy. Because it is a green product, does not cause environmental pollution, and is a renewable resource, solar cells are a new energy source with broad development prospects in today's energy shortage situation. [0003] The existing preparation process of crystalline silicon solar cells produces cells with low performance. Contents of the invention [0004] In view of this, the present invention provides a method for preparing a conventional monocrystalline one-time printed solar battery sheet, using a new diffusion process, a non-network printing process, an oxygen-free annealing process, and a light attenuation process, which greatly improves the solar cell sheet. performance. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18H01L31/0224B41M1/12B41M1/26
CPCB41M1/12B41M1/26H01L31/022425H01L31/1804Y02E10/547Y02P70/50
Inventor 吴俊旻扈静王岚
Owner TONGWEI SOLAR ENERGY (CHENGDU) CO LID
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