Patent ID: 11862738
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A method for producing a photovoltaic cell, including the implementation of the following steps:
producing an assembly comprising at least one p-n junction including at least one crystalline semiconductor substrate doped according to a first conductivity type, first and second passivation layers respectively covering first and second opposite main faces of the substrate and each also covering lateral faces of the substrate, a first charge-collecting layer configured for extracting and collecting charges of the first conductivity type and disposed against the first passivation layer, and a second charge-collecting layer configured for extracting and collecting charges of a second conductivity type, opposite to the first conductivity type, and disposed against the second passivation layer, said assembly furthermore comprising a first main face disposed on the same side as the first main face of the substrate and a second main face disposed on the same side as the second main face of the substrate;
producing a first layer of conductive transparent oxide disposed against a part of the first main face of the assembly and so that the edges of the first main face of the assembly are not covered by the first layer of conductive transparent oxide;
producing a second layer of conductive transparent oxide covering the whole of the second main face of the assembly and partially covering first parts of at least one of the first charge-collecting layer and of the second charge-collecting layer disposed on the lateral faces of the substrate;
producing electrically conductive contacts disposed against the first and second layers of conductive transparent oxide;
producing a non-reflective coating at least partially covering second parts of at least one of the first charge-collecting layer and of the second charge-collecting layer disposed on the same side as the lateral faces of the substrate and not covered by the second layer of conductive transparent oxide, and also covering the edges of the first main face.