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Method for preparing photovoltaic cell gate line electrode by laser sintering metal powder particles

A photovoltaic cell and metal powder technology, which is used in photovoltaic power generation, circuits, electrical components, etc., can solve the problem that the current collection ability needs to be improved, and achieve the effects of good compactness, material saving and high bonding strength.

Inactive Publication Date: 2019-08-16
JIANGSU OUDAFENG NEW ENERGY TECH DEV CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, although a part of the electrode material is saved, the ability to collect current needs to be improved

Method used

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  • Method for preparing photovoltaic cell gate line electrode by laser sintering metal powder particles

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Embodiment Construction

[0020] A preferred embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings. However, the scope of protection of the present invention is not limited to the following examples, that is, any simple equivalent changes and modifications made based on the patent scope of the present invention and the content of the description are still within the scope of the patent of the present invention.

[0021] refer to figure 1 , is a kind of laser sintering metal powder of the present invention prepares the method for grid wire electrode of photovoltaic cell sheet, uses laser beam, sinters the electrode metal powder particle that spreads on the surface of photovoltaic cell, after forming grid electrode, then The grid electrode of the photovoltaic cell can be obtained by removing the excess metal powder. Specific steps are as follows:

[0022] Step 1, prepare the photovoltaic cell sheet, and draw grid line electrode pattern on it...

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Abstract

The invention discloses a method for preparing a photovoltaic cell gate line electrode by laser sintering metal powder particles. A laser beam is configured to sinter the electrode metal powder particles scattered on the surface of a photovoltaic cell. After a gate electrode is formed, the redundant metal powder particles are removed to obtain the gate line electrode of the photovoltaic cell. Compared with the screen printing in the prior art, the method for preparing the photovoltaic cell gate line electrode by laser sintering metal powder particles has a good bonding force between the electrode and the cell, is a pure physical processing method, and does not need to graphically map the entire surface. Inkjet is a noncontact graphical method that helps to avoid squeezing and damaging thecell. In addition, the sintering process is compatible with existing process equipment.

Description

technical field [0001] The invention belongs to the field of solar photovoltaic battery sheets, and in particular relates to a method for preparing grid wire electrodes of photovoltaic battery sheets by laser sintering metal powder particles. Background technique [0002] The grid electrode is the most important structure and material in photovoltaic cells at present, and its main function is to collect the current converted by photovoltaics. Common front grid line electrodes include main grid lines, auxiliary grid lines and thin grid lines, the widths of which decrease in order. Currently, the most mainstream processing method for grid electrodes is screen printing. In order to improve the energy conversion efficiency of photovoltaic cells and reduce processing costs, it is necessary to improve the screen printing technology. At present, it mainly includes reducing the width and thickness of the fine grid lines, thereby reducing the light-shielding area of ​​the grid line...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/0224H01L31/18
CPCH01L31/022425H01L31/1876Y02E10/50Y02P70/50
Inventor 朱学林
Owner JIANGSU OUDAFENG NEW ENERGY TECH DEV CO LTD
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