UV direct-writing of metals on polyimide substrates

Autor: Duncan Paul Hand, Marc P.Y. Desmulliez, B.G. Moffat, Andrew C. Walker, J.H.-G. Ng, Aongus McCarthy, Marco Lamponi, Kevin Alan Prior, H. Suyal
Rok vydání: 2008
Předmět:
Zdroj: 2008 2nd Electronics Systemintegration Technology Conference.
DOI: 10.1109/estc.2008.4684434
Popis: Copper micro-patterns have been fabricated on polyimide substrates without the use of evaporation techniques or photoresist materials. A novel easy light-directed metal patterning method has been achieved by using a photoreactive polymer reducing agent, methoxy poly(ethylene glycol) (MPEG) as a thin film coating. The interaction of UV light and MPEG in ethanol film enables the photoreduction of mobile silver ions previously incorporated within the surface-modified polyimide substrates. The silver nanoparticle patterns thus formed serve as a active catalytic seed layer for subsequent electroless copper plating. Narrow copper tracks with low resistivity close to that of bulk copper have been achieved.
Databáze: OpenAIRE