Abstract

From transmission electron microscopy observations, Al films sputtered on (011)Si substrates were found to grow epitaxially, similar to those on (001)Si and (111)Si substrates. The condition for single crystallization of the epitaxial Al films was obtained by changing heat treatments and Al film thickness. In addition, a simple acceleration test revealed that the electromigration resistance of Al interconnects on a (011)Si substrate was much higher than that on a SiO2 film.

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