Conductive contact for solar cell

摘要

Conductive contacts for solar cells and methods of forming conductive contacts for solar cells are described. For example, a solar cell includes a substrate. A conductive contact is disposed on the substrate. The conductive contact includes a layer composed of a first metal species having a plurality of pores. The conductive contact also includes a second metal species disposed in the plurality of pores. Portions of both the first and second metal species are in contact with the substrate.

主权项

1. A solar cell, comprising:
a substrate; and a conductive contact disposed on the substrate, the conductive contact comprising: a layer comprising a first metal species having a plurality of pores, and a second metal species disposed in the plurality of pores, wherein portions of both the first and second metal species are in contact with the substrate, wherein the first metal species in aluminum (Al) and the second metal species is nickel (Ni), wherein a concentration of the second metal species is graded higher in concentration distal from the substrate and lower in concentration proximate to the substrate, wherein the aluminum is included as a plurality of aluminum/silicon (Al/Si) alloy particles, wherein a majority of the Al/Si alloy particles has a diameter approximately in the range of 1-5 microns, and a majority of the pores has a diameter approximately in the range of 0.1-1 microns.