Numéro
J. Phys. IV France
Volume 03, Numéro C3, Août 1993
Proceedings of the Ninth European Conference on Chemical Vapour Deposition
Page(s) C3-297 - C3-304
DOI http://dx.doi.org/10.1051/jp4:1993341
Proceedings of the Ninth European Conference on Chemical Vapour Deposition

J. Phys. IV France 03 (1993) C3-297-C3-304

DOI: 10.1051/jp4:1993341

Preparation of iridium and platinum films by MOCVD and their properties

T. GOTO, R. VARGAS and T. HIRAI

Institute for Material Research, Tohoku University, 2-1-1 Katahira Aoba-ku, Sendai 980, Japan


Abstract
Noble metals (Ir, Pt) films were prepared by MOCVD using metal-acetylacetonate precursors. The effects of deposition conditions on deposition rates, composition and microstructure were studied, and the optimum conditions were determined. A small amount of oxygen addition to the source gas was effective to prepare high-purity films. Epitaxially grown films were obtained on several kinds of single crystalline substrates. Black-colored powdery films containing impurity carbon were prepared without oxygen addition. These black films consists of fine particles about several nanometer in size. Ir films prepared without oxygen addition showed superior electrical and catalytic properties as an electrode for zirconia solid electrolytes particularly below 600°C.



© EDP Sciences 1993