Foil-based metallization of solar cells

摘要

Approaches for the foil-based metallization of solar cells and the resulting solar cells are described. In an example, a solar cell includes a substrate. A plurality of alternating N-type and P-type semiconductor regions is disposed in or above the substrate. A conductive contact structure is disposed above the plurality of alternating N-type and P-type semiconductor regions. The conductive contact structure includes a plurality of metal seed material regions providing a metal seed material region disposed on each of the alternating N-type and P-type semiconductor regions. A metal foil is disposed on the plurality of metal seed material regions, the metal foil having anodized portions isolating metal regions of the metal foil corresponding to the alternating N-type and P-type semiconductor regions.

主权项

1. A solar cell, comprising:
a substrate; a plurality of alternating N-type and P-type semiconductor regions disposed in or above the substrate; and a conductive contact structure disposed above the plurality of alternating N-type and P-type semiconductor regions, the conductive contact structure comprising:
a plurality of metal seed material regions providing a metal seed material region disposed on each of the plurality of alternating N-type and P-type semiconductor regions; anda metal foil disposed on the plurality of metal seed material regions, the metal foil having anodized portions isolating metal regions of the metal foil corresponding to the plurality of alternating N-type and P-type semiconductor regions.