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A kind of solar cell positive silver conductive silver paste composition and preparation method
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A technology for solar cells and conductive silver paste, applied in the field of solar cells, can solve the problems of easy collapse of paste and large grid line resistance, and achieve the effects of wide sintering range, low ash content and good printing effect
Inactive Publication Date: 2016-05-04
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology
[0003] The purpose of the present invention is to provide a solar cell positive silver conductive silver paste composition and preparation method to solve the technical problems of the paste is easy to collapse and the grid wire resistance is large in the prior art
Method used
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Embodiment 1
[0019] Solar cell front silver conductive silver paste composition, the mass percentage of each component is as follows:
[0020]
[0021] The preparation method of the above composition is as follows: mixing the liquid components in the components evenly, then adding the solid components and stirring evenly, grinding on a grinder, and finally packaging.
[0022] The composition is screen-printed with 250-300 mesh, the width before printing is 102 μm, the width after sintering is 93 μm, and the adhesion is 20N.
Embodiment 2
[0024] Solar cell front silver conductive silver paste composition, the mass percentage of each component is as follows:
[0025]
[0026] The preparation method of the above composition is as follows: mixing the liquid components in the components evenly, then adding the solid components and stirring evenly, grinding on a grinder, and finally packaging.
[0027] The composition is screen-printed with 250-300 mesh, the width before printing is 102 μm, the width after sintering is 93 μm, and the adhesion is 20N.
Embodiment 3
[0029] Solar cell front silver conductive silver paste composition, the mass percentage of each component is as follows:
[0030]
[0031]
[0032] The preparation method of the above composition is as follows: mixing the liquid components in the components evenly, then adding the solid components and stirring evenly, grinding on a grinder, and finally packaging.
[0033] The composition is screen-printed with 250-300 mesh, the width before printing is 110 μm, the width after sintering is 98 μm, and the adhesion is 20N.
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Abstract
The invention discloses a solar cell front-silver conductive silver slurry composition and a preparation method thereof. The composition is composed of 2-5% of a rosin derivative, 10-15% of a terpenes mixture, 75-80% of silver powder, 1-6% of glass powder and 1-5% of a sintering aid, wherein the terpenes mixture is a mixed solvent prepared by mixing geraniol, nerol, citronellol and linalool at a mass ratio of 1:1:1:1, the glass powder is a material formed by sintering PbO2, SnO2 and SiO2 at a mol ratio of 1:0.5:1, and the sintering aid is an organic matter containing dibutyl tin carboxylate. The advantages are as follows: the printing effects of the silver slurry composition is good, the linewidth is easy to control, the sintering scope is quite wide, diffusion in a sintering process is difficult, and the conversion efficiency of a solar cell can be increased by 0.2-0.35%.
Description
technical field [0001] The invention relates to a solar cell, in particular to a composition and a preparation method of a front silver conductive silver paste for a solar cell. Background technique [0002] The conversion efficiency of solar cells is closely related to the grid lines on the surface of the battery. The grid lines on the surface are generally printed with silver paste, and different materials and different printing aspect ratios have a great impact on the conversion rate of solar cells. Impact. In order to obtain a larger effective area and photoelectric conversion rate, the predecessors have carried out a lot of research and published many patents and documents. Among them, the more effective method is to reduce the printing width of the grid line and increase the height of the grid line, but the problem of doing so is that the general resin stiffness is not enough and it is easy to collapse. At the same time, there is also poor dispersion of the silver pas...
Claims
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