Apparatus for forming a plurality of high-aspect ratio gridline structures

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United States of America Patent

PATENT NO 8322025
APP PUB NO 20080102558A1
SERIAL NO

11555479

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Abstract

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Closely spaced, high aspect-ratio gridline structures are formed on the surface of a substrate using two or more co-extrusion heads that co-extrude gridline material and sacrificial material such that the deposited gridline material is compressed between opposing portions of the sacrificial material. The co-extrusion heads include three-channel cavity structures that converge to a relatively small outlet orifice that dispenses the gridline material with relatively fine features and a relatively high aspect ratio. The outlet orifices of the co-extrusion heads are disposed in a staggered arrangement such that gridlines extruded from the first co-extrusion head are disposed between two gridlines extruded from the second co-extrusion head. Photovoltaic cells are produced with metal gridlines formed in this manner.

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Patent Owner(s)

  • SOLARWORLD INDUSTRIES GMBH

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fork, David K Los Altos, US 160 3839
Zimmermann, Thomas S Jena, DE 5 39

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