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Solar cells with reduced recombination under grid lines, and method of manufacturing same

  • US 5,112,409 A
  • Filed: 01/23/1991
  • Issued: 05/12/1992
  • Est. Priority Date: 01/23/1991
  • Status: Expired due to Fees
First Claim
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1. Photovoltaic apparatus for converting incident radiant energy to electrical energy comprising:

  • a first photovoltaic material layer of one conductivity type and having a surface;

    an insulative material layer formed directly on said first layer surface in a pattern corresponding substantially to a preselected grid pattern and having a surface spaced from said first layer surface;

    a second photovoltaic material layer of the opposite conductivity type formed on those portions of said first layer surface not covered by said patterned insulative layer, adjacent portions of said insulative and second layers defining boundaries therebetween; and

    a metalized grid layer formed directly on said insulative layer surface in said preselected grid pattern, said grid layer covering said insulative layer and overlapping at least a portion of said second layer for electrically contacting said second layer along said defined boundaries, the radiant energy being incident on said second layer and said grid layer.

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