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

Claim 0:
1. A solar cell, comprising:
a first thin dielectric layer disposed on a back surface of a substrate;
a semiconductor structure disposed on the first thin dielectric layer such that the first thin dielectric layer is vertically between the back surface of the substrate and the semiconductor structure, wherein the semiconductor structure comprises a stack of three or more distinct semiconductor layers;
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 semiconductor structure; and
a second conductive contact structure disposed on the polycrystalline silicon emitter region, wherein the polycrystalline silicon emitter region overlaps the semiconductor structure.