Preparing method of solar cell slice with pattern

A technology of solar cells and patterns, which is applied in the manufacture of circuits, electrical components, and final products, can solve the problems of single solar products and no personalized design and production, and achieve the expansion of application fields, good energy saving and environmental protection benefits, and tight integration Effect

Active Publication Date: 2011-11-23
山东力诺太阳能电力股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the existing market, solar products are single, there is no good personalized design and production, and they cannot meet the increasingly demanding market needs. Therefore, there is no need for complicated designs or processes, and at the same time, the premise of not affecting the electrical performance of solar cells Next, the preparation of a series of solar cell products with patterns will expand the application field of solar products and accelerate the civilianization process of the photovoltaic industry

Method used

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  • Preparing method of solar cell slice with pattern
  • Preparing method of solar cell slice with pattern
  • Preparing method of solar cell slice with pattern

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1: Preparation of 125 single crystal solar cells with dragon pattern

[0027] Select 125 single crystal silicon wafers, the silicon wafers undergo conventional cleaning process, and the surface is textured in order to remove the mechanical damage layer on the surface of the silicon wafer, remove the surface oil and metal impurities, form an uneven textured surface, increase the short-circuit current, and improve the battery life. Photoelectric conversion efficiency. At 260°C, 80-100nm silicon nitride was deposited on the diffusion surface of the silicon wafer by PECVD process (that is, plasma enhanced chemical vapor deposition method). Use a screen with a dragon-shaped pattern to print the Merck acidic corrosive paste on the anti-reflection layer of the silicon wafer by screen printing, place the silicon wafer in an environment of 400°C, and react for 300s. The patterned silicon wafer after the reaction is sprayed with pure water, ultrasonically cleaned, ultras...

Embodiment 2

[0029] Embodiment 2: the preparation of 156 polycrystalline solar cells with the words "POWER"

[0030] Select polycrystalline silicon wafers, and the silicon wafers undergo a conventional cleaning process, and the surface is textured to remove the mechanical damage layer on the surface of the silicon wafer, remove surface oil and metal impurities, form an uneven textured surface, increase the short-circuit current, and improve the photoelectric conversion efficiency of the battery . At 260°C, use the PECVD process (that is, plasma enhanced chemical vapor deposition method) to deposit an anti-reflection layer of 80~100nm on the diffusion surface of the silicon wafer. Use a screen with the word "POWER" to print Merck's alkaline corrosive paste on the silicon wafer by screen printing, place the silicon wafer at 150°C, and react for 20 seconds. The patterned silicon wafer is sprayed with pure water, ultrasonically cleaned, ultrasonically cleaned in dilute hydrochloric acid solut...

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Abstract

The invention discloses a preparing method of a solar cell slice with a pattern. The reparation technique disclosed by the invention can make a random pattern locally on the surface of the solar cell slice; and the preparation technique is simple and capable of realizing industrialization rapidly if the same is combined with the current production technique tightly. A solar cell prepared by using the method is free from electrical property loss. The method can be used to draw a pattern in need randomly on the solar cell, so as to meet different demands and to enlarge the application field of the solar cells. The solar cell with the pattern prepared by using the method is simple in structure, distinctive, and suitable for being used as building materials so as to meet different building demands, and has excellent energy saving and environmental protection benefits.

Description

technical field [0001] The invention relates to the technical field of solar cell sheet preparation methods, in particular to a patterned solar cell sheet preparation method. Background technique [0002] In recent years, with the further development of the solar energy industry, the process of civilian use of solar energy products has gradually accelerated. Under the general trend of globalization, low-carbon and environmental protection, in addition to the basic requirements for the electrical performance of solar products, solar cells require different patterns due to factors such as environmental requirements, visual requirements, and decorative requirements. With the expansion of civilian use, personalized photovoltaic products with patterns can better meet the needs of the market. For example: when solar cells are used in solar flashlights and solar perpetual calendars, if the personalization and aesthetics of the products are considered, it is necessary to consider m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 王兆光张黎明刘鹏姜言森李玉花徐振华程亮任现坤张春艳
Owner 山东力诺太阳能电力股份有限公司
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