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Manufacturing method of solar cell grid wire

A technology for solar cells and manufacturing methods, applied in the direction of final product manufacturing, sustainable manufacturing/processing, conductive materials dispersed in non-conductive inorganic materials, etc., to reduce contact resistance, improve fire-through ability, and enhance ohmic contact. Effect

Active Publication Date: 2017-03-22
SUZHOU ISILVER MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the current slurry can only seek a balance between the two

Method used

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  • Manufacturing method of solar cell grid wire
  • Manufacturing method of solar cell grid wire
  • Manufacturing method of solar cell grid wire

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Experimental program
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Embodiment 1-5

[0033] Embodiment 1-5: A method for manufacturing solar cell grid lines, the battery front electrode grid line is composed of a first paste layer 1 and a second paste layer 2 located on the upper surface of the first paste layer 1 ;

[0034] The first slurry and the second slurry are respectively loaded into containers connected to the lower nozzle 4 and the upper nozzle 3, the lower nozzle 4 and the upper nozzle 3 are arranged in parallel closely and the upper nozzle 3 is located on the upper side of the lower nozzle 4 , the travel speed of the lower nozzle 4 and the upper nozzle 3 is 125mm / s; the drying temperature of the front electrode grid of the battery is 140~160°C;

[0035] The first slurry is made up of the following components in parts by weight:

[0036] Organic vehicle 23 parts,

[0037] 70 parts of silver powder,

[0038] 5 parts glass powder,

[0039] Ohmic contact additive 2 parts,

[0040] The organic vehicle in the first slurry is formed by heating terpin...

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Abstract

The invention discloses a method for manufacturing a solar cell grid line. The grid line of a front electrode of a cell comprises a first slurry layer and a second slurry layer located on the upper surface of the first slurry layer. First slurry comprises an organic carrier, silver powder, glass powder and an ohm contact additive. Second slurry comprises an organic carrier, silver powder, glass powder and a metal adhesive. The organic carrier in the second slurry is formed by heating terpilenol, butyl carbitol, ethyl cellulose and the balance in the proportion of 53:28:14:5 to 60 DEG C, stirring for at least two hours and mixing the components. The particle size of the silver powder is 6 micrometers, and the glass powder is made of bismuth, silicon and antimony. The front electrode of the solar cell with a high height-width ratio can be manufactured through the manufacturing method, the problem of positioning precision is solved, burning ability of an anti-reflection layer is improved, and adhesion force of the electrode to a cell substrate is improved.

Description

technical field [0001] The invention relates to a method for manufacturing a grid wire of a solar cell, and belongs to the technical field of solar cell preparation. Background technique [0002] A solar cell is a semiconductor device with "photovoltaic effect". The PN junction of the device generates voltage after being illuminated, that is, the process of generating electrical energy from light energy. Then, according to the above principle, the most critical thing is that there must be a connected circuit to form electrical energy into a current. to use. Therefore, it is very important to prepare electrodes on the surface of solar cells to draw current. At present, the industrialized solution is to print paste on both sides of the solar cell to make electrodes, one of which is used for the aluminum or aluminum / silver electrode on the back of the solar cell; the other is used for the light-receiving surface (front) of the solar cell Compared with the performance of solar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01B1/22H01L31/0224
CPCH01B1/22H01L31/022425H01L31/18Y02E10/50Y02P70/50
Inventor 周欣山汪山傅坚
Owner SUZHOU ISILVER MATERIALS
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