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Conductive paste and conductive track or coating

專利號(hào)
US10868200B2
公開(kāi)日期
2020-12-15
申請(qǐng)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(shuō)明書

Where a conductive track is formed on a substrate other than a semiconductor substrate for a solar cell, the way in which the conductive paste is applied to the substrate is not particularly limited. For example, the conductive paste may be printed onto the substrate (e.g. inkjet printed or screen printed), or it may be coated onto the substrate (e.g. dip coated). The firing conditions are also not particularly limited but may be similar to those described above with reference to forming a surface electrode for a solar cell.

Where ranges are specified herein it is intended that each endpoint of the range is independent. Accordingly, it is expressly contemplated that each recited upper endpoint of a range is independently combinable with each recited lower endpoint, and vice versa.

EXAMPLES

Glass Frit and Inorganic Blend

Glass frits and inorganic blends were prepared using commercially available raw materials. The compositions of the glass frit and inorganic blends are given in Tables 1 2 and 3 below.

TABLE 1 Glass frit compositions (Compositions in weight % and mol % on an oxide basis)

權(quán)利要求

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