Bonding formation and gas absorption using Au/Pt/Ti layers for vacuum packaging

Shingo Kariya, Takashi Matsumae, Yuichi Kurashima, Hideki Takagi, Masanori Hayase, Eiji Higurashi

Research output: Contribution to journalArticlepeer-review


In this study, we developed a metal multilayer that can provide hermetic sealing after degassing the assemblies and absorbing the residual gases in the package. A package without a leak path was obtained by the direct bonding of the Au/Pt/Ti layers. After packaging, annealing at 450 °C caused thermal diffusion of the Ti underlayer atoms to the inner surface, which led to absorption of the residual gas molecules. These results indicated that a wafer coated with a Au/Pt/Ti layer can provide hermetic sealing and absorb residual gases, which can simplify vacuum packaging processes in the electronics industry.

Original languageEnglish
Article number2
JournalMicrosystems and Nanoengineering
Issue number1
Publication statusPublished - Dec 2022


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