Two-terminal cell-interconnected-circuits using mechanically-stacked photovoltaic cells for line-focus concentrator arrays
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United States of America Patent
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Mar 5, 2002
Grant Date -
N/A
app pub date -
Sep 15, 2000
filing date -
Sep 17, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Two-terminal circuit has top and bottom cells bonded to an insulating substrate with the top cells bonded on top of the bottom cells. Bottom cells are connected in series through ribbon bonds. Top cells are connected in parallel through ribbon bonds. The ribbon bonds connect to the topsides of the top and bottom cells. The substrate contains metal die bonding pads for the base contacts to the bottom cells. Metal traces are provided for ribbon bond connections to emitter contacts for the bottom cells. A metal trace becomes a positive terminal pad for the bottom cells and a negative terminal for a second pad for the bottom cells. Two cell assemblies may be series connected by connecting positive top cell output connectors with negative pads of top cells in adjacent cell assemblies, and by connecting positive bottom cell output connectors with negative pads of bottom cells in adjacent assemblies.
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