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Melt planarization of solar cell bus bars

  • US 8,080,729 B2
  • Filed: 11/24/2008
  • Issued: 12/20/2011
  • Est. Priority Date: 11/24/2008
  • Status: Expired due to Fees
First Claim
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1. A method for producing a solar cell, the method comprising:

  • disposing a first ink onto a substrate such that the printed first ink forms an elongated bus bar on the substrate;

    printing a second ink onto the substrate such that the second ink forms an elongated gridline including a first gridline portion contacting the substrate and a second gridline portion disposed on the bus bar, and such that each of said first and second gridline portions include an initial cross-section having a first aspect ratio; and

    inducing localized melting of the second gridline portion such that said second gridline portion assumes a melted cross-section having a second aspect ratio that is lower than said first aspect ratio, and such that said first gridline portion retains said initial cross-section having said first aspect ratio.

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