Commissariat a L'energie Atomique Et Aux Energies Alternatives

Samuel Gall

Maria-Delfina Munoz

Bertrand Paviet-Salomon

Sylvain Manuel

A method for producing a heterojunction photovoltaic cell includes formation of at least one anti-reflection layer on which at least one metal track is formed. The method includes heat treatment to make the contact connection between the track and the anti-reflection layer. The heat treatment selectively applies a laser beam on the track to generate a heat input up to anti-reflection layer.

Method for producing a photovoltaic cell having a heterojunction

A method for manufacturing a photovoltaic cell with a selective emitter, including the steps of: depositing an antireflection layer including n-type dopants on an n- or p-type silicon substrate, said deposition being, performed in the presence of a chemical compound that accelerates the diffusion of n-type dopant atoms in said substrate; overdoping at least one area of the substrate to form at least one noverdoped emitter by local diffusion of the n dopants of at least one area of the antireflection layer; depositing at least one n-type conductive material on the at least one noverdoped emitter; and at least one p-type conductive material on the surface of the substrate opposite to that including the antireflection layer; forming the n contacts and the p contacts simultaneously to the forming of an nemitter by an anneal capable of diffusing within the substrate n dopants from the antireflection layer.

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Arradon, France

Samuel Gall