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Organic carrier for solar cell silver paste and preparation method thereof

A technology of solar cells and organic carriers, which is applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc. Reduce the light-receiving area of ​​the battery and other problems to achieve the effect of excellent transfer, excellent transfer characteristics and clear graphics

Active Publication Date: 2018-08-31
JIANGSU RUIDE NEW ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the back-silver paste grid lines reported in the prior art have poor shaping ability, and the aspect ratio of electrodes and grid lines after sintering is small, which reduces the light-receiving area occupied by the cell, thereby reducing the efficiency of the solar cell.

Method used

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  • Organic carrier for solar cell silver paste and preparation method thereof

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preparation example Construction

[0031] The present invention also provides a kind of preparation method of the organic carrier for solar cell silver paste, comprising the following steps:

[0032] (1) Uniformly disperse the thickener and cationic surfactant in part of the organic solvent in an oil bath, the temperature of the oil bath is 100~160°C;

[0033](2) Evenly disperse the glass powder and hydrogenated castor oil in the remaining organic solvent, and disperse it by ultrasonic, the ultrasonic power is 300~600W, and the ultrasonic time is 5~45min;

[0034] (3) Add the mixing system of step (1) into the mixing system of step (2), add the coupling agent and stir evenly, then place it under the ultraviolet lamp for 1~10h;

[0035] (4) Grinding the reaction product in step (3), and passing through a 400-600 mesh sieve to obtain an organic carrier for solar cell silver paste.

[0036] According to the present invention, further, the mixing of the thickener and the cationic surfactant in the solvent in the s...

Embodiment 1

[0038] An organic vehicle for solar cell silver paste comprises the following parts by weight: 80 parts of DBE, 12 parts of glass powder, 1.2 parts of hydrogenated castor oil modified by polyamide, 5 parts of ethyl cellulose, 5 parts of rosin modified resin, dioxane 0.3 parts of ammonium methyl ethanolamine methyl sulfate, 5 parts of isopropyl tris(dioctyl phosphate acyloxy) titanate, 3 parts of paraffin wax, and 8 parts of ethylene glycol.

[0039] The preparation method of organic carrier for described solar cell silver paste, comprises the following steps:

[0040] (1) Evenly disperse ethyl cellulose, rosin modified resin, ammonium dialkylethanolamine methyl methylsulfate in 30 parts of DBE and stir in an oil bath, the temperature of the oil bath is 120°C, and the The rotating speed of stirring and mixing is 500 rpm, and the time of stirring and mixing is 10min;

[0041] (2) Evenly disperse the glass powder and polyamide-modified hydrogenated castor oil in 50 parts of DBE,...

Embodiment 2

[0045] An organic vehicle for solar cell silver paste includes 70 parts by weight of terpineol, 15 parts of glass powder, 1 part of polyamide-modified hydrogenated castor oil, 15 parts of ethyl cellulose, and 0.1 parts of trialkylammonium chloride Parts, 6 parts of vinyltrimethoxysilane, 2 parts of paraffin, 5 parts of ethylene glycol.

[0046] The preparation method of organic carrier for described solar cell silver paste, comprises the following steps:

[0047] (1) Evenly disperse ethyl cellulose and trialkylammonium chloride in 30 parts of terpineol and stir in an oil bath, the temperature of the oil bath is 100°C, and the stirring speed is 500 rpm / minute, the time of the stirring and mixing is 5min;

[0048] (2) Evenly disperse glass powder and polyamide-modified hydrogenated castor oil in 40 parts of terpineol, and ultrasonically disperse with ultrasonic power of 300W and ultrasonic time of 45 minutes;

[0049] (3) Add the mixed system of step (1) into the mixed syste...

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Abstract

The invention belongs to solar cell silver paste, and particularly relates to an organic carrier used for the solar cell silver paste and a preparation method for the organic carrier. The silver paste comprises the organic carrier used for the solar cell silver paste, and the organic carrier comprises the following materials in parts by weight: 70-90 parts of organic solvent, 5-15 parts of glass powder, 0.5-3 parts of hydrogenated castor oil, 5-15 parts of thickening agent, 0.1-0.8 parts of cationic surface active agent, and 3-6 parts of coupling agent. The preparation method for the organic carrier is simple, and the prepared organic carrier is efficient and high in consistency; by virtue of optimization of the organic carrier used for the solar cell silver paste, quite high linear moulding capability is achieved, the silk-screen quality of the silver paste on a silicon wafer is improved, the depth-width ratio of an electrode to a grid line after sintering can be improved and the occupied light-receiving area is reduced, thereby improving the efficiency of the solar cell.

Description

technical field [0001] The invention belongs to solar battery silver paste, in particular to an organic carrier for solar battery silver paste and a preparation method thereof. Background technique [0002] Solar photovoltaic technology (Photovoltaic) is a technology that converts solar energy into electricity, and its core is a semiconductor material that can release electrons. As the main application form of solar photovoltaic technology, solar photovoltaic cells have two layers of semiconductors, positive and negative. When sunlight shines on the semiconductor, current is generated at the junction of the positive and negative electrodes. Therefore, solar photovoltaic cells have the characteristics of free fuel and no harmful gas emissions. Advantages, but also has the characteristics of not easy to damage, easy maintenance, quick installation and no noise. [0003] As early as 1839, the French scientist Becqurel discovered that light can generate potential differences be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/22H01B13/00H01L31/0224
CPCH01B1/22H01B13/00H01L31/022425Y02E10/50
Inventor 戈士勇
Owner JIANGSU RUIDE NEW ENERGY TECH