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Silver paint used for forming photovoltaic electrodes

A silver coating and electrode technology, applied in photovoltaic power generation, conductive materials dispersed in non-conductive inorganic materials, circuits, etc., can solve problems such as adverse effects, achieve improved wettability, high temperature viscosity, and improve battery conversion efficiency Effect

Inactive Publication Date: 2018-10-16
SUZHOU ISILVER MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, in previous studies, it was proposed to avoid glass crystallization, and it was believed that crystallization would cause adverse effects

Method used

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  • Silver paint used for forming photovoltaic electrodes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~4

[0037] Embodiment 1~4: a kind of silver coating for forming photovoltaic electrode, described conductive paste is made up of the following components by weight:

[0038] Table 1

[0039]

Example 1

Example 2

Example 3

Example 4

Silver powder 75~92 parts

78 copies

90 copies

88 copies

82 copies

5~12 parts of organic solvent

5 copies

8 servings

4.5 servings

6 servings

2~3 copies of organic carrier

3 copies

5 copies

2.6 servings

4.5 servings

Alkylphenol polyoxyethylene ether 0.5~1 part

0.7 parts

0.6 parts

0.9 parts

0.8 parts

Metal glass-ceramic powder 0.8~5.3 parts

2.8 servings

0.9 parts

3.2 parts

1 copy

[0040] The above-mentioned organic carrier is formed by mixing butyl carbitol acetate, ethyl cellulose, acrylate, oleic acid, polypropylene glycol, and polyamide wax in a weight ratio of 75:7:6:4:3:5.

[0041] The above-mentioned organic ...

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Abstract

The invention discloses silver paint used for forming photovoltaic electrodes. The conductive paste consists of the following components, by weight: 75-92 parts of silver powder, 5-12 parts of an organic solvent, 2-3 parts of an organic carrier, 0.5-1 part of alkyl phenol polyoxyethylene ether, and 0.8-5.3 parts of metal microcrystalline glass powder. The particle size D50 of the metal microcrystalline glass powder is 0.3-2 mu m. The metal microcrystalline glass powder consists of the following components: 10-50 parts of tellurium dioxide, 20-80 parts of lithium oxide, 2-10 parts of zinc oxide, 1-15 parts of tungsten oxide, 0.4-2 parts of molybdenum oxide, 1-6 parts of boron oxide, 1-4 parts of bismuth oxide, 1-2 parts of sodium carbonate, and 0.5-0.8 part of barium chloride. The conductive paste effectively improves the conversion efficiency of cells, and has the characteristics of high temperature viscosity and large surface tension. Molten glass cannot not flow easily during a pastesintering process, thereby maintaining a fine line shape.

Description

technical field [0001] The invention relates to a silver coating for forming photovoltaic electrodes, belonging to the technical field of solar cell functional materials. Background technique [0002] Photovoltaic cells, as an important branch of new clean energy, have achieved rapid development in recent years. Photovoltaic cell technology is also changing with each passing day. The entire industry chain is actively improving the conversion efficiency of photovoltaic cells and reducing costs through technological innovation, striving to achieve grid parity and replace traditional high pollution. energy. [0003] Crystalline silicon photovoltaic cells are currently the most important type of photovoltaic cells, accounting for more than 90%. The principle of photoelectric conversion is: boron-doped P-type silicon and phosphorus-doped N-type silicon form a PN junction. The junction then absorbs photon energy to excite electron transitions, forming electron-hole pairs, thereby...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B1/16H01L31/0224
CPCH01B1/16H01B1/22H01L31/022425Y02E10/50
Inventor 包娜汪山周欣山
Owner SUZHOU ISILVER MATERIALS
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