TITLE

Unusual room-temperature intermixing and oxidation in copper deposited on a fluorinated amorphous silicon system

AUTHOR(S)
Cytermann, C.; Brener, R.; Sacher, E.; Pratt, B.; Weil, R.
PUB. DATE
January 1988
SOURCE
Applied Physics Letters;1/18/1988, Vol. 52 Issue 3, p191
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The room-temperature behavior of Cu thin films on crystalline and amorphous silicon (c-Si and a-Si) substrates was studied by Auger electron spectroscopy. All samples, except Cu/ a-Si:F, behaved as usual metal on silicon systems. It was found that F greatly enhances Cu-Si intermixing which proceeds up to the sample surface. After prolonged room-temperature exposure to air, this system settles into the unusual configuration: Cu/SiO2/a-Si:F. The effect is explained in terms of the permeability of Cu3Si to oxygen and the low solubility of Cu in SiO2.
ACCESSION #
9825696

 

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