Silver diffusion bonding and layer transfer of lithium niobate to silicon
- 1 September 2008
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 93 (9), 092906
- https://doi.org/10.1063/1.2976560
Abstract
A diffusion bonding method has been developed that enables layer transfer of single crystallithium niobate thin films to silicon substrates. A silverfilm was deposited onto both the silicon and lithium niobate surfaces prior to bonding, and upon heating, a diffusion bond was formed. Transmission electron microscopy confirms the interface evolution via diffusion bonding which combines interfacial diffusion, power law creep, and growth of (111) silver grains to replace the as-bonded interface by a single polycrystalline silverfilm. The transferred film composition was the same as bulk lithium niobate.Keywords
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