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Conductive paste containing lead-free glass frit

A lead-free glass, conductive paste technology, applied in conductive materials, conductive coatings, circuits, etc. dispersed in non-conductive inorganic materials, can solve problems such as poor energy conversion efficiency and insufficient adhesion, and achieve excellent conversion efficiency, Environmentally friendly, good substrate adhesion effect

Active Publication Date: 2016-06-15
GIGA SOLAR MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of this, the technical problem to be solved by this application is that the conductive paste containing lead-free glass frit has insufficient adhesion to the substrate after sintering, and the problem of poor energy conversion efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Preparation of conductive paste containing lead-free glass frit

[0038] The preparation of the organic carrier of the conductive paste is to dissolve 5 to 25 grams of ethyl cellulose in 5 to 75 grams of diethylene glycol butyl ether, and add a small amount of viscosity modifier, dispersant, thixotropic agent, wetting obtained by medicine. Then 80 to 99.5 grams of industrial-grade silver powder raw material, 0.1 to 10 grams of lead-free glass frit (Table 1, Examples G1 to G15) and 10 to 30 grams of organic vehicle were put in a three-roll mill (three -rollmill) mix and disperse evenly to make a paste or paste conductive paste.

[0039] Lead-containing glass frits were also prepared in the same manner (Table 2, Comparative Examples PG1 to PG5).

[0040] Table 1 Lead-free glass frit (TeO 2 -Bi 2 o 3 -Li 2 O) composition and weight percentage thereof (embodiment)

[0041] wt%

G1

G2

G3

G4

G5

G6

G7

G8

G9

G10

G11

...

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PUM

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Abstract

The present invention discloses a conductive paste comprising a conductive metal or a derivative thereof, and a lead-free glass frit dispersed in an organic vehicle, wherein said lead-free glass frit comprises tellurium-bismuth-zinc-tungsten-oxide. The conductive paste of the present invention can be used in the preparation of an electrode of a solar cell with excellent energy conversion efficiency.

Description

technical field [0001] The application belongs to the field of electroconductive paste, and in particular relates to an electroconductive paste containing conductive metal, lead-free glass frit and an organic carrier, and a product using the electroconductive paste. Background technique [0002] Existing solar cells or photovoltaic cells include a semiconductor substrate, a diffusion layer, an anti-reflection coating, a back electrode and a front electrode, wherein the anti-reflection coating is used to promote light absorption, thereby improving photoelectric efficiency. Antireflective coatings typically contain silicon (eg, silicon nitride or silicon dioxide). However, the anti-reflection coating increases the resistance from the semiconductor substrate to the front electrode, creating an insulating effect that weakens the flow of excited-state electrons. [0003] Therefore, when forming the front electrode, a conductive paste made by mixing conductive metal or its deriva...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B1/22H01L31/0224
CPCH01B1/22H01L31/022425C03C3/062C03C3/122C03C3/16C03C3/17C03C8/02C03C8/04C03C8/08C03C8/18H01B1/16Y02E10/50C09D5/24H01L31/022466
Inventor 叶志贤施柏仰辛璧宇
Owner GIGA SOLAR MATERIALS
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