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Electrical sintering of silver nanoparticle ink studied by in-situ TEM probing.


ABSTRACT: Metallic nanoparticle inks are used for printed electronics, but to reach acceptable conductivity the structures need to be sintered, usually using a furnace. Recently, sintering by direct resistive heating has been demonstrated. For a microscopic understanding of this Joule heating sintering method, we studied the entire process in real time inside a transmission electron microscope equipped with a movable electrical probe. We found an onset of Joule heating induced sintering and coalescence of nanoparticles at power levels of 0.1-10 mW/?m³. In addition, a carbonization of the organic shells that stabilize the nanoparticles were found, with a conductivity of 4 10? Sm?¹.

SUBMITTER: Hummelgard M 

PROVIDER: S-EPMC3044741 | BioStudies | 2011-01-01

REPOSITORIES: biostudies

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