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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-literature | 2011 Feb

REPOSITORIES: biostudies-literature

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

Hummelgård Magnus M Zhang Renyun R Nilsson Hans-Erik HE Olin Håkan H

PloS one 20110224 2

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 ...[more]

PMID: 21390314

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