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US 12,230,724 B2Granted
Solar cells having hybrid architectures including differentiated p-type and n-type regions with offset contacts
AssigneeMaxeon Solar Pte. Ltd.
InventorsDavid D. Smith, Jeffrey El Cotter, David Aaron Randolph Barkhouse, Taeseok Kim
Life of this patent
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Abstract
A solar cell, and methods of fabricating said solar cell, are disclosed. The solar cell can include a first emitter region over a substrate, the first emitter region having a perimeter around a portion of the substrate. A first conductive contact is electrically coupled to the first emitter region at a location outside of the perimeter of the first emitter region.
Claims7
A method of fabricating a solar cell, the method comprising:
- forming a first emitter region over a substrate, the first emitter region having a perimeter around a portion of the substrate;
- forming a first conductive contact electrically coupled to the first emitter region only at a location outside of the perimeter of the first emitter region through an opening in a first insulator layer, the first conductive contact having a portion that extends vertically over the first emitter region, wherein a portion of the first emitter region at the location outside of the perimeter of the first emitter region is not in direct physical contact with the substrate;
- and
- forming a second insulator layer over the substrate, wherein a second portion of the first emitter region is within one or more openings in the second insulator layer and along a top surface of the second insulator layer, and wherein the second portion of the first emitter region is in contact with sidewalls of the one or more openings of the second dielectric layer and is in contact with the top surface of the second insulator layer.
1 more element
Dependencies are inferred from the claim text.