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US 2015/0090327 A1Published application
Firing metal with support
AssigneesSunPower Corporation, Total Marketing Services
InventorsRichard Hamilton Sewell, Paul Loscutoff, Michel Arsène Olivier Ngamo Toko
Life of this patent
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Abstract
A solar cell can include a substrate and a semiconductor region disposed in or above the substrate. The solar cell can also include a conductive contact disposed on the semiconductor region with the conductive contact including a paste, a first metal, and a first conductive portion that includes a conductive alloy formed from the first metal at an interface of the substrate and the semiconductor region.
Claims20
A method of fabricating a solar cell, the method comprising:
- forming a paste on a silicon substrate;
- depositing nickel on the paste;
- firing the nickel to form a first conductive portion that electrically couples the nickel to the silicon substrate;
- and
- forming a conductive contact that includes the first conductive portion for the solar cell.
2 more elements
A solar cell, comprising:
- a substrate;
- a semiconductor region disposed in or above the substrate;
- and
- a conductive contact disposed on the semiconductor region, wherein the conductive contact includes a printed paste, a first metal, and a first conductive portion comprising a conductive alloy formed from the first metal at an interface of the substrate and the semiconductor region.
1 more element
A method of fabricating a solar cell, comprising:
- depositing a paste on a semiconductor region disposed in or above a silicon substrate;
- plating a first metal on the paste;
- forming a conductive alloy from the first metal and the silicon substrate;
- plating a second metal on the first metal, wherein the first and second metals and the conductive alloy form a conductive contact for the semiconductor region of the solar cell.
1 more element
Dependencies are inferred from the claim text.