Method of heat treatment of silver layers
AssigneeSaint-Gobain Glass France
InventorsFabien Lienhart, Martin Python
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Abstract
The subject of the invention is a process for obtaining a material comprising a substrate coated on at least one portion of at least one of its faces with a stack of thin layers comprising at least one silver layer, said process comprising a step of depositing said stack then a heat treatment step, said heat treatment being carried out by irradiating at least one portion of the surface of said stack using at least one incoherent light source for an irradiation time ranging from 0.1 millisecond to 100 seconds, so that the sheet resistance and/or the emissivity of said stack is reduced by at least 5% in relative terms, the or each silver layer remaining continuous at the end of the treatment.
Claims13
A process comprising:
- depositing a stack of thin layers, comprising a silver layer, on at least a portion of a face of a substrate, then
- heat treating the stack by irradiating at least one portion of a surface of the stack with an incoherent light source for an irradiation time of from 0.1 millisecond to 100 seconds, thereby reducing a sheet resistance and/or an emissivity of the stack by at least 5% in relative terms,
- wherein the silver layer remains continuous at the end of the treatment.
Dependencies are inferred from the claim text.