Three-junction solar cell

Patent · Wed Jan 01 00:00:00 EST 1986

OSTI ID:865785

Ludowise, Michael J ^[1]

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1. Cupertino, CA

A photovoltaic solar cell is formed in a monolithic semiconductor. The cell contains three junctions. In sequence from the light-entering face, the junctions have a high, a medium, and a low energy gap. The lower junctions are connected in series by one or more metallic members connecting the top of the lower junction through apertures to the bottom of the middle junction. The upper junction is connected in voltage opposition to the lower and middle junctions by second metallic electrodes deposited in holes 60 through the upper junction. The second electrodes are connected to an external terminal.

• Research Organization: National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• DOE Contract Number: EG-77-C-01-4042
• Assignee: United States of America as represented by United States (Washington, DC)
• Patent Number(s): US 4575576
• OSTI ID: 865785
• Country of Publication: United States
• Language: English

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medium
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series
metallic
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top
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apertures
bottom
middle
upper
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60
external
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