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Conductive paste and conductive track or coating

專利號
US10868200B2
公開日期
2020-12-15
申請人
JOHNSON MATTHEY PUBLIC LIMITED COMPANY(GB London)
發(fā)明人
Beatriz Cela Greven; Jonathan Charles Shepley Booth; Nicholas Nowak; Simon Johnson; Tobias Droste
IPC分類
H01L31/0224; H01B1/22
技術(shù)領(lǐng)域
wt,inorganic,particle,or,μm,paste,conductive,mixture,solar,less
地域: London

摘要

The present invention relates to a conductive paste for forming a conductive track or coating on a substrate, particularly suitable for use in solar cells. The paste comprises a solids portion dispersed in an organic medium, the solids portion comprising electrically conductive material and an inorganic particle mixture wherein the inorganic particle mixture comprises substantially crystalline particles. The present invention also relates to a method of preparing a conductive paste, a method for the manufacture of a surface electrode of a solar cell, an electrode for a solar cell and a solar cell.

說明書

FIG. 5 shows sintering curve comparisons for various inorganic particle mixtures and a glass.

FIG. 6 shows sintering curve comparisons for various other inorganic particle mixtures.

DETAILED DESCRIPTION

Preferred and/or optional features of the invention will now be set out. Any aspect of the invention may be combined with any other aspect of the invention unless the context demands otherwise. Any of the preferred and/or optional features of any aspect may be combined, either singly or in combination, with any aspect of the invention unless the context demands otherwise.

For example, the discussion of the inorganic particle mixture content, raw materials and particle size distribution is applicable to the aspects of the invention relating to pastes, methods and blends equally.

Conductive pastes of the present invention include an organic medium and a solids portion. The solids portion includes electrically conductive material and an inorganic particle mixture. Each of these will be discussed, as will various methods of using them to make a conductive paste.

Inorganic (e.g. Oxide) Particle Mixture—Content

The solids portion of the conductive pastes described herein contains a blend of substantially crystalline inorganic materials in particulate form. This inorganic blend is sometimes referred to as an oxide particle mixture herein. The oxides, carbonates, nitrates or other materials as described below can be mixed (for example, by co-milling) and then incorporated into a conductive paste.

權(quán)利要求

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