Silicon solar cells with aluminum-magnesium alloy low resistance contacts
AssigneeE. I. Du Pont de Nemours and Company
InventorSanford M. Marcus
Life of this patent
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Abstract
An Al-Mg alloy is mixed with a Ni-Sb alloy or Al, in powder form, to form a thick-film metallizing paste useful for making low resistance electrically conductive contacts to a silicon solar cell coated with Si.sub.3 N.sub.4.
Claims4
A silicon solar cell coated with Si.sub.3 N.sub.4 having a P-type and an N-type region and a P-N junction, the N surface of which has been metallized by (1) screen-printing thereon a thick film paste comprising a mixture of finely divided particles of a major amount of a metal powder, a minor amount of glass frits and a small amount of a 50 Al:50 Mg alloy, dispersed in an organic vehicle, and (2) firing the printed surface at a temperature of at least 500.degree. C. to form electrically conductive contacts thereon.
A silicon solar cell coated with Si.sub.3 N.sub.4 having a P-type and an N-type region and a P-N junction, the P surface of which has been metallized by (1) screen-printing thereon a thick film paste comprising a mixture of finely divided particles of a major amount of a metal powder, a minor amount of glass frits and a small amount of a 50 Al:50 Mg alloy, dispersed in an organic vehicle, and (2) firing the printed surface at a temperature of at least 600.degree. C. to form electrically conductive contacts thereon.
Dependencies are inferred from the claim text.