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Conductive paste composition and solar cell using said conductive paste composition

A technology of conductive paste and composition, applied to conductive materials dispersed in non-conductive inorganic materials, circuits, photovoltaic power generation, etc., can solve problems affecting the photoelectric conversion efficiency of solar cells, reduce line expansion behavior, and improve Aspect ratio, the effect of increasing the light-receiving area

Active Publication Date: 2021-05-04
PANCOLOR INK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when printing fine lines, the problem of line expansion has the disadvantage of affecting the photoelectric conversion efficiency of solar cells.

Method used

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  • Conductive paste composition and solar cell using said conductive paste composition
  • Conductive paste composition and solar cell using said conductive paste composition
  • Conductive paste composition and solar cell using said conductive paste composition

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Embodiment Construction

[0023] For fully understanding purpose of the present invention, feature and effect, by following specific embodiment, the present invention is described in detail, as follows:

[0024] Moreover, "%"" referred to in the present invention means "% by weight" unless otherwise specified.

[0025] The composition of the conductive paste provided by the invention includes: an organic vehicle, aluminum powder, and phenoxy alcohol. Wherein, phenoxy alcohol (Phenoxy alkyl alcohol) accounts for 2-10% of the whole weight of the conductive paste, preferably 2-8%. Moreover, it is preferable that phenoxy alcohol exists in the state of a solvent. Also, the phenoxy alcohol is preferably, but not limited to, phenoxyethanol or phenoxypropanol.

[0026] Moreover, the method for manufacturing the conductive paste composition of this embodiment at least includes: the first step S1 to the third step S3.

[0027] In the first step S1, the organic solvent is mixed with the resin or cellulose to f...

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Abstract

The present invention is a conductive paste composition, which comprises: aluminum powder; an organic vehicle, which includes an organic solvent and resin or cellulose; phenoxy alcohol, which accounts for 2 to 10% by weight of the conductive paste composition . In the present invention, by adding phenoxy alcohol to the conductive paste composition, the surface tension of the conductive paste can be increased, and the difference between the surface tension of the conductive paste and the battery sheet can be increased, and the wetting behavior between the paste and the chip can be changed, so that the The line expansion behavior of the printed circuit is reduced, the aspect ratio of the printed circuit is increased, and the light-receiving area of ​​the cell is increased, thereby improving the photoelectric conversion efficiency of the solar cell (especially the local back field solar cell, PERC double-sided cell).

Description

technical field [0001] The invention relates to a conductive paste composition and a solar cell using the conductive paste composition. Background technique [0002] Fine line printing is widely used in solar cells, especially the conductive paste of solar cells. However, when fine line printing is performed, the problem of line expansion caused by it has the disadvantage of affecting the photoelectric conversion efficiency of the solar cell. [0003] In view of the above defects, some people propose a method for controlling the expansion of the printed circuit, such as improving the thixotropy of the printing paste. The means can be by adding thixotropic agents such as fumed silica (Fumed Silica), hydrogenated castor oil, modified polyurea compounds, and polyamide waxes. Through the action of thixotropic agents such as thickening thixotropy, the line expansion behavior during fine line printing can be solved. [0004] In addition, it has also been proposed to improve the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00H01L31/0224
CPCH01B1/16H01B1/22H01B13/00H01L31/022425H01L31/022441Y02E10/50
Inventor 黄滢华张弘樱白友钦
Owner PANCOLOR INK
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