Low-temperature solid-liquid interdiffusion (SLID) bonding is an attractive alternative for the packaging of optical devices. It reduces global residual stress build up caused by differences in coefficient of thermal expansion (CTE) at elevated temperatures. This work applied the Cu-Sn-In-based SLID bonding method to bond silicon and optically transparent materials at 200 °C. Experimental results show a successful bonding with minor unavoidable misalignment from the CTE mismatch and major misalignment from the bonding alignment process. Microstructural analysis shows the intermetallic compound consists only of Cu6(Sn,In)5 on the bond that is thermally stable up to 600 °C.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.