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Transparent contacts for stacked compound photovoltaic cells

United States Patent

9,508,881
November 29, 2016
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
Microsystems Enabled Photovoltaics (MEPV)
A microsystems-enabled multi-junction photovoltaic (MEM-PV) cell includes a first photovoltaic cell having a first junction, the first photovoltaic cell including a first semiconductor material employed to form the first junction, the first semiconductor material having a first bandgap. The MEM-PV cell also includes a second photovoltaic cell comprising a second junction. The second photovoltaic cell comprises a second semiconductor material employed to form the second junction, the second semiconductor material having a second bandgap that is less than the first bandgap, the second photovoltaic cell further comprising a first contact layer disposed between the first junction of the first photovoltaic cell and the second junction of the second photovoltaic cell, the first contact layer composed of a third semiconductor material having a third bandgap, the third bandgap being greater than or equal to the first bandgap.
Tauke-Pedretti; Anna (Albuquerque, NM), Cederberg; Jeffrey (Albuquerque, NM), Nielson; Gregory N. (Albuquerque, NM), Okandan; Murat (Edgewood, NM), Cruz-Campa; Jose Luis (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
13/ 649,238
20140102520
October 11, 2012
STATEMENT OF GOVERNMENTAL INTEREST This invention was developed under Contract DE AC04-94AL85000 between Sandia Corporation and the U.S. Department of Energy. The U.S. Government has certain rights in this invention.