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Silicon paste containing multiple hydrogen bond supramolecular self-assembly system and its application in solar cells

A technology for solar cells and pastes, which is applied to conductive materials, circuits, and electrical components dispersed in non-conductive inorganic materials, and can solve the problems of high technical cost and uneconomical use.

Inactive Publication Date: 2016-02-10
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The technical means for preparing selective emission structures include mask lithography, secondary phosphorous paste screen printing, etc. These technologies are costly and uneconomical for actual production lines

Method used

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  • Silicon paste containing multiple hydrogen bond supramolecular self-assembly system and its application in solar cells
  • Silicon paste containing multiple hydrogen bond supramolecular self-assembly system and its application in solar cells
  • Silicon paste containing multiple hydrogen bond supramolecular self-assembly system and its application in solar cells

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Embodiment 1

[0019] This embodiment is a silicon slurry, the particle size of nano-silicon powder is 2-30 nanometers, its content is 0.5% (mass percentage), and the content of organic vehicle is 99.5% (mass percentage).

[0020] The components and contents of the organic carrier are as follows:

[0021]

Embodiment 2

[0023] This embodiment is a silicon slurry, the particle size of nano-silicon powder is 2-30 nanometers, its content is 2% (mass percentage), and the content of organic vehicle is 98% (mass percentage).

[0024] The components and contents of the organic carrier are as follows:

[0025]

[0026]

Embodiment 3

[0028] This embodiment is a silicon slurry, the particle size of nano-silicon powder is 2-30 nanometers, its content is 5% (mass percentage), and the content of organic vehicle is 95% (mass percentage).

[0029] The components and contents of the organic carrier are as follows:

[0030]

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Abstract

A nanometer silicon slurry for the solar cell industry is composed of nanometer silicon powder and an organic carrier. The nanometer silicon powder has a particle size of 2-100 nanometers and a mass percentage of 0.5-50%. The organic carrier has a mass percentage of 50-99.5% and is composed of a solvent, a resin, a thixotropic agent, a phosphorus-containing substance and the like, wherein the content of the resin accounts for 0.5-60% of the mass of the organic carrier, the content of the solvent accounts for 10-90% of the mass of the organic carrier, the content of the thixotropic agent accounts for 0.5-10% of the mass of the organic carrier, and the content of the phosphorus-containing substance accounts for 0.5-40% of the mass of the organic carrier. The nanometer silicon slurry is characterized in that the thixotropic agent contains the multiple-hydrogen bond supermolecule self assembly system such as a two-hydrogen bond system, a three-hydrogen bond system and / or a four-hydrogen bond system so that rheological performance of the slurry can be enhanced and printing quality is improved. The slurry provided by the invention can be used for preparation of elective emitting electrode crystal silicon solar cells.

Description

technical field [0001] The invention relates to a composition of nano-silicon slurry and its application in silicon solar cells. Background technique [0002] The development of high-efficiency, low-cost, and long-life solar cells has always been an important topic in the field of photovoltaic science and engineering. For crystalline silicon solar cells, using a selective emitter structure with heavily doped metal grid lines and lightly doped areas between grid lines can effectively improve the short-wave response of the cell, increase the short-circuit current density of the cell, and improve the photoelectric conversion efficiency of the device. . The technical means for preparing selective emission structures include mask photolithography, secondary phosphorous paste screen printing, etc. These technologies are costly and uneconomical for actual production lines. Nano-silicon paste containing phosphorus or boron has been used in flexible microelectronics, such as printi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B1/24H01L31/0224B82Y30/00
Inventor 黄艳刘东郁骁琦张珈铭张静全卢志云
Owner SICHUAN UNIV
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