Patent ID: 7943417

Claim:
Method for metallization of at least one photovoltaic cell comprising a substrate based on a semiconductor with a first type of conductivity, a layer doped with a second type of conductivity produced in the substrate and forming a front face of the substrate, an antireflection layer produced on the front face of the substrate and forming a front face of the photovoltaic cell, which method comprising at least the steps of: a) producing at least one metallization on the front face of the photovoltaic cell, then b) a first annealing of the photovoltaic cell at a temperature between around 800° C. and 900° C. to diffuse hydrogen into the substrate, then c) producing at least one metallization on the rear face of the substrate, then d) a second annealing of the photovoltaic cell at a temperature between around 700° C. and 800° C. to form bonds between the hydrogen and impurities or crystallographic defects in the substrate.