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METHOD AND STRUCTURE FOR FABRICATING SOLAR CELLS USING A LAYER TRANSFER PROCESS

  • US 20070235074A1
  • Filed: 03/13/2007
  • Published: 10/11/2007
  • Est. Priority Date: 03/17/2006
  • Status: Active Grant
First Claim
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1. A method for fabricating a photovoltaic cell, the method comprising:

  • providing a semiconductor substrate, the semiconductor substrate having a surface region, a cleave region and a first thickness of material to be removed between the surface region and the cleave region;

    coupling the surface region of the semiconductor substrate to a first surface region of an optically transparent substrate, the optically transparent substrate comprising the first surface region and a second surface region;

    cleaving the semiconductor substrate to remove the first thickness of material from the semiconductor substrate, while the surface region remains coupled to the first surface region, to cause formation of a cleaved surface region; and

    forming a second thickness of semiconductor material overlying the cleaved surface region to form a resulting thickness of semiconductor material.

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