Dry Epitaxial Lift-Off for High Efficiency Solar Cells

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CE60P
Agency Tracking Number: 104923
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: X8.04
Solicitation Number: N/A
Small Business Information
60 Phillips Street, 3-2, Attleboro, MA, 02703-6129
DUNS: 362175965
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 John Farah
 Principal Investigator
 (401) 616-4176
 johnfarah@hotmail.com
Business Contact
 John Farah
Title: Business Official
Phone: (401) 616-4176
Email: johnfarah@hotmail.com
Research Institution
 Stub
Abstract
A new method of transferring epitaxially grown active films onto an inexpensive polymeric flexible carrier. Specifically, for making thin lightweight high efficiency (> 30%) IMM3J solar cells while reusing the GaAs or Ge base wafer. This will reduce the costs of fabricating high efficiency PV cells by 30% and will raise specific power to > 200W/kg. The method uses a thin strained layer under the epitaxially grown active layers without ion implantation or wet etching. A crack propagates in the strained layer splitting the epi-layers from the base wafer after bonding to polyimide wafer, hence dry epitaxial lift-off (DELO), due to the difference in thermal expansion coefficients between the semiconductor and flexible substrate without applying mechanical pressure. The base wafer is re-used to grow new epi-layers.

* Information listed above is at the time of submission. *

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government