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Solar cell conductive slurry containing ethyl orthosilicate

A technology of ethyl orthosilicate and solar cells, applied in conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc., can solve problems such as large environmental pollution and poor weldability, and reduce production Cost, improved electrical conductivity, high photoelectric conversion efficiency of cells

Active Publication Date: 2013-05-22
重庆新锐科技服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In most electronic pastes, the inorganic binder is mainly lead-containing glass powder with a low melting point, which has major defects in environmental pollution and poor solderability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] A kind of solar cell conductive paste containing tetraethylorthosilicate, it is made by the raw material of following parts by weight (kg):

[0028] A material 63, B material 18, ethyl orthosilicate 0.5, dioctyl maleate 0.7, castor oil 1.6;

[0029] The material A is prepared from the following raw materials in parts by weight: 1-5 μm silver powder 42, 11-15 μm silver powder 20, 16-25 μm silver powder 18, 1-5 μm glass powder 12, organic carrier A 22, silane coupling agent KH602 2. Epoxy octyl stearate 0.6;

[0030] The material B is prepared from the following raw materials in parts by weight: 6-10 μm gold powder 54, 16-25 μm gold powder 15, 20-25 μm glass powder 10, organic carrier B 20, silicone oil 1.2, acetyl triethyl citrate 0.2 ;

[0031] Described glass powder is made by the raw material of following weight part: CuO 10, AS 2 o 3 6.7, Bi 2 o 3 9,B 2 o 3 6, Al 2 o 3 11, SiO 2 10, Sb 2 o 3 11, AgO 2 4,K 2 O 8 , Co 2 o 3 6, tree as...

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Abstract

The invention discloses solar cell conductive slurry containing ethyl orthosilicate. The solar cell conductive slurry is made of, by weight, 60-65 of material A, 15-20 of material B, 0.3-0.6 of ethyl orthosilicate, 0.5-0.8 of dioctyl maleate, and 1-2 of castor oil. The solar cell conductive slurry does not contain plumbum, completely meets environment-friendly requirements, is applied to production of solar cells, can form strong adhesive force on the surfaces of the solar cells, enables photovoltaic conversion efficiency of the cells to be high, meanwhile, utilizes silver powder, aluminum powder and copper powder which are different in grain diameter, increases contacting areas among grains, and therefore improves conductivity of silver slurry.

Description

technical field [0001] The invention relates to the field of electronic fine chemicals, in particular to a solar cell conductive paste containing tetraethylorthosilicate. Background technique [0002] Conductive paste is the key material for packaging, electrodes and interconnection of electronic components, mainly including two categories: burn-in type conductive paste and curable conductive adhesive (conductive ink). [0003] Firing type conductive paste is mainly used in solar cell and other industries, and used as electrode after sintering. Curable conductive ink is widely used in printed circuit and electronic packaging and other industries. [0004] According to different fillers, conductive paste can be divided into carbon paste (graphite conductor), metal paste (gold powder, silver powder, copper powder, silver-copper alloy), and modified ceramic paste. [0005] In terms of performance comparison, the conductivity of the precious metal filler is the best, followed b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/16H01B1/22H01B13/00H01L31/0224
Inventor 年福枭
Owner 重庆新锐科技服务有限公司
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