A semiconductor device includes an interlevel insulating film disposed on a semiconductor substrate and having an opening formed therein. An interconnection main layer, which contains Cu as a main component, is embedded in the opening. A barrier film is interposed between the interlevel insulating film and the interconnection main layer within the opening. The barrier film contains, as a main component, a compound of a predetermined metal element with a component element of the interlevel insulating film.

 
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