Patent ID: 11919083
Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
Field: Materials, metallurgy (Chemistry)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A method for interconnecting components of an electronic system, the method comprising the steps of:
a) depositing a sintering solution onto a first component in order to form an interconnection layer, the sintering solution consisting off a solvent, metal nanoparticles dispersed in the solvent, a stabilizing agent adsorbed onto the metal nanoparticles and keeping the metal nanoparticles apart,
the metal nanoparticles comprising for more than 95.0% of their mass a metal selected from silver, gold, copper and alloys thereof and having a polyhedral shape with an aspect ratio of more than 0.8,
b) eliminating, at least partially, the solvent from the interconnection layer such as to form at least one agglomerate in which the stabilizing agent binds them together and maintains at least a portion of the metal nanoparticles at a distance from each other,
c) debinding and sintering the interconnection layer, at a temperature of less than 200° C., by bringing the agglomerate into contact with at least one destabilizing agent configured to desorb the stabilizing agent from the metal nanoparticles in order to aggregate and coalesce said metal nanoparticles between themselves, and
d) depositing a second component in contact with the interconnection layer before or during debinding or sintering.