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Preparation method of organic carrier containing cellulose nanocrystals and application of organic carrier in silver paste

An organic carrier, nanocrystal technology, applied in conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, semiconductor devices, etc., can solve problems such as disconnection and collapse, achieve large filling factor, and improve electrical performance. , the effect of small series resistance

Inactive Publication Date: 2018-10-12
山东建邦胶体材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the front side silver paste printing often collapses or even breaks after sintering

Method used

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  • Preparation method of organic carrier containing cellulose nanocrystals and application of organic carrier in silver paste

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] An organic carrier containing cellulose nanocrystals (CNC), comprising the following components in weight percentage: 10% cellulose nanocrystal hydrogel, 72% organic solvent, 13.5% additives, 4.5% resin, see Table 1 shows.

[0033] The preparation method is:

[0034] (1) Alcohol ester-12, diethylene glycol butyl ether acetate, tributyl citrate, diethylene glycol butyl ether, dibutyl phthalate, ethyl cellulose After mixing cellulose (n=100), ethyl cellulose (n=300), polyamide wax and oleic acid amide, heating to 180°C for dissolution, cooling to room temperature to obtain conventional organic vehicle 1;

[0035] (2) Mix the conventional organic vehicle and CNC at a weight ratio of 9:1, and stir evenly to obtain CNC organic vehicle 1.

Embodiment 2

[0037] An organic carrier containing cellulose nanocrystals (CNC), including the following components in weight percentage: 20% of cellulose nanocrystal hydrogel, 64% of organic solvent, 12% of additives, and 4% of resin. See Table 1 shows.

[0038] The preparation method is:

[0039] (1) Alcohol ester-12, diethylene glycol butyl ether acetate, tributyl citrate, diethylene glycol butyl ether, dibutyl phthalate, ethyl cellulose After mixing cellulose (n=100), ethyl cellulose (n=300), polyamide wax and oleic acid amide, heating to 180°C for dissolution, cooling to room temperature to obtain conventional organic vehicle 1;

[0040] (2) Mix the conventional organic vehicle and CNC at a weight ratio of 8:2, and stir evenly to obtain CNC organic vehicle 2.

Embodiment 3

[0042] An organic carrier containing cellulose nanocrystals (CNC), comprising the following components in weight percentage: 30% cellulose nanocrystal hydrogel, 56% organic solvent, 10.5% additives, 3.5% resin, see Table 1 shows.

[0043] The preparation method is:

[0044] (1) Alcohol ester-12, diethylene glycol butyl ether acetate, tributyl citrate, diethylene glycol butyl ether, dibutyl phthalate, ethyl cellulose After mixing element (n=100), ethyl cellulose (n=300), polyamide wax and oleic acid amide, heating to 180° C. to dissolve, cooling to room temperature to obtain conventional organic vehicle 2;

[0045] (2) Mix the conventional organic vehicle and CNC at a weight ratio of 7:3, and stir evenly to obtain CNC organic vehicle 3.

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PUM

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Abstract

The invention discloses a preparation method of an organic carrier containing cellulose nanocrystals. The organic carrier consists of 1-5% of resin, 1.5-6% of an auxiliary agent, 59-92.5% of an organic solvent and 5-30% of cellulose nanocrystal hydrogel. The invention also provides a method for preparing front-surface silver paste of a solar cell by using the carrier. The silver paste comprises 5-9% of the organic carrier, 2-3% of glass powder, 86-90% of silver powder and 1-2% of a solvent / auxiliary agent. According to the invention, cellulose-containing nanocrystals (CNC) are added into the organic carrier, and the printing performance of the front-surface silver paste is improved through changing the content of the CNC in the organic carrier, namely the proportion of the CNC to a conventional organic carrier, so that the height-width ratio of the grid line is increased, collapse does not occur in a sintering process, and the electrical property after sintering is improved. The front-surface silver paste of the solar cell prepared by the organic carrier provided by the invention has good printing performance, and after the sintering, the height-width ratio of the grid line is large, the filling factor is large, the series resistance is small, and the cell conversion efficiency is high.

Description

technical field [0001] The invention relates to an organic carrier containing cellulose nanocrystals, its preparation method and its application in silver paste, in particular to an organic carrier containing cellulose nanocrystals (CNC), its preparation method and its application in silver paste on the front side of solar cells It also relates to the preparation method of the above-mentioned solar cell front silver paste. It belongs to the field of photovoltaic technology. Background technique [0002] Cellulose nanocrystal (CNC) is a kind of nanoscale cellulose extracted from natural fibers, which not only has the characteristics of nanoparticles, such as high aspect ratio, high bending strength, high shear modulus, but also has some Unique strength and optical properties have broad application prospects. CNC can be used as a 100% biosafe nanomaterial to strengthen different polymer systems. CNC has high solubility and compatibility in water; CNC can also be used as an a...

Claims

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Application Information

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IPC IPC(8): C08L1/02C08L1/28C08K5/20H01B1/16H01B1/22H01B13/00H01L31/0224
CPCC08L1/02C08L2205/025C08L2205/035H01B1/16H01B1/22H01B13/00H01L31/022425C08L1/28C08K5/20
Inventor 陈波王艳云刘舒韩世生马跃跃
Owner 山东建邦胶体材料有限公司
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