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Solar cell front side silver slurry doped with modified graphene and manufacture method therefor

A solar cell and graphene technology, applied in the manufacture of cables/conductors, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., to achieve broad market prospects, reduce contact resistance and line resistance, and improve the effect of photoelectric conversion efficiency

Active Publication Date: 2016-08-10
NANTONG T SUN NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Usually, reducing the line width of the grid line and increasing the aspect ratio are the current research directions, and the line type to be printed will also be raised to the bottleneck stage; at the same time, there is very little research on additives in China.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0025] A solar cell front silver paste doped with modified graphene, the solar cell front silver paste doped with modified graphene consists of the following components in parts by weight: 0.1 part of modified graphene, 88 parts of silver powder , 5 parts of organic binder, 2 parts of organic solvent, 1 part of glass powder, and the modified graphene is surface-modified graphene.

[0026] The surface-modified graphene comprises graphene and a surface modifier, and the components of the surface-modified graphene are composed in parts by weight: 85 parts of graphene and 1 part of surface modifier.

[0027] The surface modifier is one or more of titanate coupling agents, aluminate coupling agents, silane coupling agents, and zircoaluminate coupling agents.

[0028] The silver powder is micron-spherical silver powder and nano-silver powder, in parts by weight: 85 parts of micron silver powder, 1 part of nano-silver powder; the average particle size of micron-spherical silver powde...

specific Embodiment 2

[0037] A solar cell front silver paste doped with modified graphene, the solar cell front silver paste doped with modified graphene consists of the following components in parts by weight: 5 parts of modified graphene, 91 parts of silver powder , 15 parts of organic binder, 2 parts of organic solvent, 3 parts of glass powder, and the modified graphene is surface-modified graphene.

[0038] The surface-modified graphene comprises graphene and a surface modifier, and the components of the surface-modified graphene are composed in parts by weight: 99 parts of graphene and 15 parts of surface modifier.

[0039] The surface modifier is one or more of titanate coupling agents, aluminate coupling agents, silane coupling agents, and zircoaluminate coupling agents.

[0040] The silver powder is micron-spherical silver powder and nano-silver powder, in parts by weight: 99 parts of micro-silver powder, 15 parts of nano-silver powder; the average particle size of micron-spherical silver p...

specific Embodiment 3

[0049] A solar cell front silver paste doped with modified graphene, the solar cell front silver paste doped with modified graphene consists of the following components in parts by weight: 3 parts of modified graphene, 89 parts of silver powder , 10 parts of organic binder, 3 parts of organic solvent, 2 parts of glass powder, and the modified graphene is surface-modified graphene.

[0050] The surface-modified graphene comprises graphene and a surface modifier, and the components of the surface-modified graphene are composed in parts by weight: 90 parts of graphene and 7 parts of surface modifier.

[0051] The surface modifier is one or more of titanate coupling agents, aluminate coupling agents, silane coupling agents, and zircoaluminate coupling agents.

[0052] The silver powder is micron-spherical silver powder and nano-silver powder, in parts by weight: 87 parts of micron silver powder, 7 parts of nano-silver powder, the average particle size of micron-spherical silver po...

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Abstract

The invention discloses a solar cell front side silver slurry doped with modified graphene and a manufacture method therefor. The solar cell front side silver slurry doped with the modified grapheme is prepared from the following raw materials in parts by weight: 0.1-5 parts of modified graphene, 88-91 parts of silver powder, 5-15 parts of organic binders, 0.1-5 parts of organic solvents and 1-3 parts of glass powder. The modified graphene is graphene with surface modification. The solar cell front side silver slurry doped with the modified graphene and the manufacture method therefor are mainly used for lowering series resistance of a solar cell, a fast silk screen is developed and is printed on a crystalline silicon, a silicon wafer SiNx passivation layer is penetrated after a high sintering operation process, and therefore the front side silver slurry which is good in ohmic contact is formed; silver and silicon contact resistance and line resistance are lowered, and photoelectric conversion efficiency is improved; the front side silver slurry disclosed in the invention has wide market prospects.

Description

technical field [0001] The invention relates to a front silver paste of a solar cell, in particular to a front silver paste of a solar cell doped with modified graphene and a preparation method thereof. Background technique [0002] Improving the efficiency of solar cells is currently a goal pursued by the highly competitive photovoltaic industry. The mainstream idea for commercialization to improve efficiency is to increase the diffusion resistance of the cell and increase the number of printed gate electrodes at the same time. [0003] In order to be able to extract the photo-generated current generated inside the crystalline silicon solar cell to the external load, it is necessary to make metal electrodes on both sides of the p-n junction of the silicon wafer to establish metal connections. The production of electrodes is a crucial link. . [0004] The electrodes on the surface of silicon solar cells mainly include back electrodes and front silver electrodes. These elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16H01B1/18H01B1/22H01B1/24H01B13/00H01L31/0224
CPCH01B1/16H01B1/18H01B1/22H01B1/24H01B13/00H01L31/022425Y02E10/50
Inventor 朱鹏
Owner NANTONG T SUN NEW ENERGY CO LTD
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