silicone-based sealants, 3. polyurethane glue are commonly employed. **Industrial adhesives are typically formulated for strong bonding to withstand extreme weather conditions and must be resistant to UV.
The laser soldering process allows strongly localized energy deposition without heating the whole wafer. In addition the process is controlled with a pyrometer, so that the laser power can be adapted in real-time during soldering to achieve a constant temperature even at varying.