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Silver oxide decomposition mediated direct bonding of silicon-based materials.


ABSTRACT: Silicon-based materials are widely promising electronic components by the combination with metals in power electronics field. However, bonding metal and silicon-based materials generally requires specific surface modification due to their different chemical bonds. Here, we demonstrate a process for directly bonding metals to silicon-based materials that does not require surface treatment, based on the in situ decomposition of Ag2O paste, forming Ag nanoparticles (AgNPs). We demonstrate sound joints of Ag/silicon-based materials at 300-500?°C with the formation of a silicon oxide interlayer containing AgNPs. We propose that Ag in the interlayer attracted other Ag particles to the interface, playing a unique role in this direct bonding process. This process is suitable for various bonding applications in electronics, as well the fabrication of conducting paths for photovoltaic and other applications.

SUBMITTER: Matsuda T 

PROVIDER: S-EPMC6041264 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature

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Silver oxide decomposition mediated direct bonding of silicon-based materials.

Matsuda Tomoki T   Inami Kota K   Motoyama Keita K   Sano Tomokazu T   Hirose Akio A  

Scientific reports 20180711 1


Silicon-based materials are widely promising electronic components by the combination with metals in power electronics field. However, bonding metal and silicon-based materials generally requires specific surface modification due to their different chemical bonds. Here, we demonstrate a process for directly bonding metals to silicon-based materials that does not require surface treatment, based on the in situ decomposition of Ag<sub>2</sub>O paste, forming Ag nanoparticles (AgNPs). We demonstrat  ...[more]

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