Abstract
Semiconductor wafer bonding has been a subject of interest for many years and a wide variety of
wafer bonding techniques have been reported in literature. In adhesive wafer bonding organic and
inorganic adhesives are used as intermediate bonding material. The main advantages of adhesive wafer
bonding are the relatively low bonding temperatures, the lack of need for an electric voltage or current,
the compatibility with standard CMOS wafers and the ability to join practically any kind of wafer
materials. Adhesive wafer bonding requires no special wafer surface treatments such as planarisation.
Structures and particles at the wafer surfaces can be tolerated and compensated for some extent by the
adhesive material. Adhesive wafer bonding is a comparably simple, robust and lowcost bonding
process. In this thesis, adhesive wafer bonding techniques with different polymer adhesives have been
developed. The relevant bonding parameters needed to achieve high quality and high yield wafer
bonds have been investigated. A selective adhesive wafer bonding process has also been developed
that allows localised bonding on lithographically defined wafer areas.