Solar cell and method for manufacturing such a solar cell.

摘要

A solar cell includes a semiconductor substrate, that has a front side surface for receiving radiation and a back-side surface provided with a first junction structure in a first area portion of the substrate and with a second junction structure in a second area portion of the substrate. The second area portion borders on the first area portion. The first junction structure includes a first conductivity type semiconductor layer covering the first area portion. The second junction structure includes a second conductivity type semiconductor layer covering the second area portion. The second conductivity type semiconductor layer of the second junction structure partially overlaps the first conductivity type semiconductor layer of the first junction structure,with the overlapping portion of the second conductivity type semiconductor layer being above a portion of the first conductivity type semiconductor layer while separated by a first dielectric layer therebetween. The portion of the first conductivity type semiconductor layer under the overlapping portion of the second conductivity type semiconductor layer is in direct contact with the semiconductor surface of the substrate.