Solar energy electrical conduction slurry and preparation method thereof

A technology of conductive paste and solar energy, applied in the direction of conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc., can solve problems such as silicon wafer bending, achieve low warpage, and high photoelectric conversion efficiency , good warpage effect

Inactive Publication Date: 2013-02-20
DONGFANG ELECTRIC YIXING MAGI SOLAR POWER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the current aluminum paste technology, the sintered

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0017] Example 1

[0018] (1) Prepare an organic adhesive. According to the above organic adhesive formula, weigh 12 parts by weight of ethyl cellulose, 1 part of turpentine, 20 parts of dibutyl phthalate, and 10 parts of acrylic resin. Dissolve at 80°C to obtain an organic adhesive;

[0019] (2) Prepare the glass binder, according to the above glass binder formula, weigh out parts by weight of each oxide powder, 10 parts by weight of silicon dioxide, 5 parts of alumina, 1 part of bismuth oxide, 2 parts of zinc oxide, and oxide Calcium 10 parts, mixed uniformly, put into crucible, put into high temperature resistance furnace, heat up to 1050℃, smelt for 50min, quench the melted glass and put it into ball mill jar, ball mill for 30 hours, obtain glass binder , Dry for standby;

[0020] (3) Prepare conductive paste, take 75 parts of aluminum powder, 9 parts of organic binder, 5 parts of glass binder, 1.5 parts of silane coupling agent, and 0.5 parts of dispersant according to the wei...

Example Embodiment

[0021] Example 2

[0022] (1) Prepare an organic adhesive. According to the above organic adhesive formula, weigh 25 parts by weight of ethyl cellulose, 4 parts of turpentine, 30 parts of dibutyl phthalate, and 15 parts of acrylic resin. Dissolve at 60°C to obtain an organic adhesive;

[0023] (2) Prepare the glass binder. According to the formula of the glass binder, weigh each oxide powder, 30 parts by weight of silica, 2 parts of alumina, 0.05 parts of bismuth oxide, 4 parts of zinc oxide, and oxide Calcium 20 parts, mixed uniformly, put into crucible, put into high temperature resistance furnace, heat up to 1200℃, smelt for 35min, quench the melted glass and put it into the ball mill tank and ball mill. After ball milling for 30 hours, the glass binder is obtained , Dry for standby;

[0024] (3) Prepare conductive paste, take 80 parts of aluminum powder, 25 parts of organic binder, 8 parts of glass binder, 0.02 parts of silane coupling agent, and 1 part of dispersant according ...

Example Embodiment

[0025] Example 3

[0026] (1) Prepare an organic adhesive. According to the above organic adhesive formula, weigh 20 parts by weight of ethyl cellulose, 3 parts of turpentine, 25 parts of dibutyl phthalate, and 5 parts of acrylic resin. Dissolve at 70°C to obtain an organic adhesive;

[0027] (2) Prepare a glass binder. According to the above glass binder formula, weigh out parts by weight of each oxide powder, 20 parts of silica, 10 parts of alumina, 3 parts of bismuth oxide, 2 parts of zinc oxide, and oxidation Calcium 15 parts, mixed uniformly, put into crucible, put into high temperature resistance furnace, heat up to 1080 ℃, smelt for 60 minutes, quench the melted glass and put it into ball mill tank and ball mill. After ball milling for 30 hours, a glass binder is obtained , Dry for standby;

[0028] (3) Prepare conductive paste, take 72 parts of aluminum powder, 15 parts of organic binder, 6 parts of glass binder, 3 parts of silane coupling agent, and 2 parts of dispersant a...

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Abstract

The invention discloses solar energy electrical conduction slurry and a preparation method thereof. The slurry comprises, by weight, 70-80 parts of aluminium powder, 9-25 parts of an organic bonding agent, 2-8 parts of a glass binder, 0.02-5 parts of a silane coupling agent and 0-2.5 parts of a dispersing agent. The technical scheme includes that lead is not included, good electrical conductivity, weather resistance performance and chemical resistance are provided, the photoelectric conversion efficiency of a battery is high, and the low warp performance is good.

Description

technical field [0001] The invention relates to the technical field of aluminum paste for batteries, in particular to a solar conductive paste and a preparation method thereof. Background technique [0002] A solar cell is a semiconductor device that converts solar energy into electrical energy. Under the condition of light, a photogenerated current will be generated inside the solar cell, and the electrical energy can be output through the electrodes. [0003] Existing silicon-based solar cells generally prepare electrodes by printing a conductive paste containing conductive metal powder, glass powder and an organic vehicle on a silicon substrate, drying and firing. The front electrode of the silicon substrate of a solar cell is generally a negative electrode, and the coated conductive paste is usually a conductive silver paste; the back electrode is generally a positive electrode, and the coated conductive paste is generally a conductive aluminum paste. [0004] Conductiv...

Claims

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Application Information

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IPC IPC(8): H01B1/22H01B1/16H01B13/00H01L31/0224
Inventor 黄仑卢春晖王金伟蒋志强崔梅兰
Owner DONGFANG ELECTRIC YIXING MAGI SOLAR POWER TECH
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