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Metal Atom Reactions with Polymer Films

Published online by Cambridge University Press:  25 February 2011

Caroline A. Kovac ,
Jean L. Jordan  and
Roger A. Pollak
Caroline A. Kovac
Affiliation:
IBM Thomas J. Watson Research Center, P.O. Box 218, Yorktown Hts., NY 10598
Jean L. Jordan
Affiliation:
IBM Thomas J. Watson Research Center, P.O. Box 218, Yorktown Hts., NY 10598
Roger A. Pollak
Affiliation:
IBM Thomas J. Watson Research Center, P.O. Box 218, Yorktown Hts., NY 10598
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Abstract

The chemical nature of the interface formed when an electropositive metal (chromium) is evaporated on the surface of oxygen-containing polymers has been investigated by synchrotron-radiation excited photoemission spectroscopy and by near-edge X-ray absorption fine stnrcture spectroscopy (NEXAFS). PMDA-ODA polyimide was studied along with two polymers intended to more simply model the complex chemical functionality of polyimide. Core-level spectra were resolved into distinct peaks, which were assigned to specific atoms in the polymer units, and changes in the spectra were monitored as chromium metal atoms were evaporated onto the surface. Similarly, NEXAFS spectra were taken as a function of chromium deposition. Results of these experiments show that chromium initially reacts very rapidly with surface carbonyl groups, but less strongly with ether oxygens or arene rings. In all polymers studied, formation of an electron-rich, carbide-like species was observed.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 72: Symposium G – Electronic Packaging Materials Science II , 1986 , 247
Copyright
Copyright © Materials Research Society 1986

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