Patent ID: 11935972
Assignee: MAXEON SOLAR PTE. LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 15:
16. A solar cell, comprising:
a first thin dielectric layer disposed on a back surface of a substrate;
a first semiconductor layer disposed on the first thin dielectric layer, the first semiconductor layer comprising an outermost edge;
a second semiconductor layer disposed on the first semiconductor layer, the second semiconductor layer comprising a sloped outermost edge; and
a third semiconductor layer disposed on the second semiconductor layer, the third semiconductor layer comprising a third outermost edge, wherein the third outermost edge of the third semiconductor layer is laterally recessed from an outermost edge of the first semiconductor layer;
a second thin dielectric layer disposed on the back surface of the substrate;
a polycrystalline silicon emitter region disposed on the second thin dielectric layer;
a first conductive contact structure disposed on the third semiconductor layer; and
a second conductive contact structure disposed on the polycrystalline silicon emitter region, wherein the polycrystalline silicon emitter region overlaps the first, second and third semiconductor layers.