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Low-resistivity low-temperature solar silver paste and preparation method thereof

A low-resistivity, solar-powered technology, applied in the direction of cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of low conversion rate and high production cost of inorganic semiconductor thin-film batteries, and achieve improved flexibility, reduced slurry resistivity and cost Significant resistance, effect of deepening curing degree

Pending Publication Date: 2022-05-10
无锡晶睿光电新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In recent years, solar cell technology has entered a stage of rapid development, forming various types of technical products, such as crystalline silicon solar cells, inorganic semiconductor thin-film cells, dye-sensitized solar cells, perovskite solar cells, organic polymer solar cells, etc. At present, traditional crystalline silicon is still the mainstream. Inorganic semiconductor thin film batteries have problems such as high production cost and low conversion rate, and only occupy a small part of the market. Dye-sensitized solar cells, perovskite solar cells, and organic polymer solar cells are currently still in the lab

Method used

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  • Low-resistivity low-temperature solar silver paste and preparation method thereof
  • Low-resistivity low-temperature solar silver paste and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A low-resistivity low-temperature solar silver paste. In terms of mass percentage, the raw materials of the silver paste include the following components: 93% silver powder, 1.5% resin, 1% diluent, 1.2% curing agent, 0.2% thixotropic agent, Catalyst 0.1%, organic solvent 3%.

[0039] Among them, the silver powder is flaky powder with a D50 of 3.0 μm and a tap density of 4.5 g / mL at 5% of the slurry, spherical powder with a D50 of 10% of 0.6 μm and a tap density of 4.8 g / mL, and a D50 of 55% of 2 μm. , a spherical powder with a tap density of 6 g / mL and a spherical powder with a 23% D50 of 1 μm and a tap density of 5.8 g / mL. The spherical powder is a ball powder and a ball-like powder.

[0040] Epoxy resin as main resin: 0.5% phenoxy resin PKHH and 0.7% bisphenol A epoxy resin JER827, auxiliary resin: 0.3% 2000ML.

[0041] Diluent: 1% resorcinol diglycidyl ether.

[0042] Curing agent: consists of isocyanate curing agent and auxiliary curing agent, specifically 1% G282...

Embodiment 2

[0053] A low-resistivity low-temperature solar silver paste, comprising the following components by mass percentage: 93% silver powder, 1.5% resin, 1% diluent, 1.2% curing agent, 0.2% thixotropic agent, 0.1% catalyst, organic solvent 3%.

[0054] Among them, the silver powder is flaky powder with a D50 of 3.0 μm and a tap density of 4.5 g / mL at 5% of the slurry, spherical powder with a D50 of 10% of 0.6 μm and a tap density of 4.8 g / mL, and a D50 of 55% of 2 μm. , a spherical powder with a tap density of 6 g / mL and a spherical powder with a 23% D50 of 1 μm and a tap density of 5.8 g / mL, the spherical powder includes spherical powder and spherical powder.

[0055] Epoxy resin as main resin: 0.4% phenoxy resin PKFE and 0.7% bisphenol A epoxy resin JER830S, auxiliary resin: 0.4% 220.

[0056] Diluent: 1% resorcinol diglycidyl ether.

[0057] Curing agent: consists of isocyanate curing agent and auxiliary curing agent, specifically 1% G282 isocyanate curing agent, the unblocking...

Embodiment 3

[0068] A low-resistivity low-temperature solar silver paste, comprising the following components by mass percentage: 93% silver powder, 1.5% resin, 1% diluent, 1.2% curing agent, 0.2% thixotropic agent, 0.1% catalyst, organic solvent 3%.

[0069] Among them, the silver powder is made of silver powder which accounts for 5% of the slurry, D50 is 3.0 μm, and the tap density is 4.5g / mL; 88% D50 is 1 μm, the tap density is 5.8g / mL, D10 is 0.1 μm, D100 is 3μm, spherical powder with wide particle size distribution.

[0070] Epoxy resin as main resin: 0.5% phenoxy resin PKHH and 0.7% bisphenol A epoxy resin JER827, auxiliary resin: 0.3% 2000ML.

[0071] Diluent: 1% resorcinol diglycidyl ether.

[0072] Curing agent: consists of isocyanate curing agent and auxiliary curing agent, specifically 1% G282 isocyanate curing agent, unblocking temperature is 80°C, auxiliary curing agent: 0.2% benzimidazole.

[0073] Thixotropic agent: 0.2% polyamide wax.

[0074] Catalyst: 0.1% XC2007.

...

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Abstract

The invention discloses low-resistivity low-temperature solar silver paste and a preparation method thereof. The raw materials of the silver paste comprise the following components: 87-93% of silver powder, 2-5% of resin, 1-2% of a diluent, 0.5-2% of a curing agent, 0.01-1% of a thixotropic agent, 0.01-1% of a catalyst and 2-5% of an organic solvent. The conductive performance of the silver powder is optimized by combining the silver powder with different morphologies, different sizes and specifications and different tap densities and cooperating with other auxiliaries, and by means of spatial close packing, contact points among silver powder particles are increased, gaps of the silver powder are reduced, and the resistivity and intrinsic resistance of the paste are reduced. The prepared silver paste has good stability, low volume resistivity and excellent contact resistance performance.

Description

technical field [0001] The invention relates to the technical field of conductive silver paste preparation, in particular to a low-resistivity low-temperature solar silver paste and a preparation method thereof. Background technique [0002] With the depletion of non-renewable resources such as oil and natural gas, new energy sources such as wind energy, tidal energy, and solar energy have been paid more and more attention. Solar energy is an inexhaustible and inexhaustible new energy source, and the time and cost of building a solar power station is lower than that of a traditional power station. Therefore, in the long-term energy strategy, photovoltaic power generation is an ideal solution to the energy crisis. [0003] In recent years, solar cell technology has entered a stage of rapid development, forming various types of technical products, such as crystalline silicon solar cells, inorganic semiconductor thin-film cells, dye-sensitized solar cells, perovskite solar cel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01B13/00
CPCH01B1/22H01B13/0036
Inventor 金余董飞龙李亮
Owner 无锡晶睿光电新材料有限公司
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