Multijunction photovoltaic device and fabrication method

Patent · Fri Jan 01 00:00:00 EST 1993

OSTI ID:868930

Arya, Rajeewa R ^[1]; Catalano, Anthony W ^[2]

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1. Jamison, PA
2. Furlong, PA

A multijunction photovoltaic device includes first and second amorphous silicon PIN photovoltaic cells in a stacked arrangement. An interface layer, composed of a doped silicon compound, is disposed between the two cells and has a lower bandgap than the respective n- and p-type adjacent layers of the first and second cells. The interface layer forms an ohmic contact with the one or the adjacent cell layers of the same conductivity type, and a tunnel junction with the other of the adjacent cell layers. The disclosed device is fabricated by a glow discharge process.

• DOE Contract Number: ZM-1-19033-3
• Assignee: Solarex Corporation (Rockville, MD)
• Patent Number(s): US 5246506
• Application Number: 07/730,177
• OSTI ID: 868930
• Country of Publication: United States
• Language: English

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bandgap
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