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Exafs Study of a-Si1−xGex:H, a-Si1−x Cx:H and a-Si1−xNx:H at the Si K-Edge

  • A. Filipponi (a1), P. Fiorini (a1), F. Evangelisti (a1) and S. Mobilio (a2)

Abstract

The structure of three series of hydrogenated amorphous Si-based alloys was studied by EXAFS at the Si K-edge. Average bond-lengths and first shell compositions were determined. It is shown that the two atomic species are randomly distributed in a-Si1−xGex:H whereas a chemical ordered composition is favored in a-Si1−xNx:H

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1) Incoccia, L., Mobilio, S., Proietti, M.G., Fiorini, P., Giovannella, C. and Evangelisti, F., Phys. Rev. B 31, 1028 (1985).
2) Filipponi, A., Sala, D. della, Evangelisti, F., Balerna, A. and Mobilio, S., J. de Physique C–8, 375 (1986).
3) Lengeler, B. and Eisenberger, P., Phys. Rev. B 21, 4507 (1980).
4) Filipponi, A., Fiorini, P., Evangelisti, F., Balerna, A. and Mobilio, S., J. de Physique C–8, 357 (1986).
5) Cargill, G.S. III and Spaepen, F., J. Non-Cryst. Solids 43, 91 (1981).
6) Sala, D. della, unpublished.
7) Sala, D. della, Coluzza, C., Fortunato, G. and Evangelisti, F., J. Non-Cryst. Solids 77–78, 933 (1985).

Exafs Study of a-Si1−xGex:H, a-Si1−x Cx:H and a-Si1−xNx:H at the Si K-Edge

  • A. Filipponi (a1), P. Fiorini (a1), F. Evangelisti (a1) and S. Mobilio (a2)

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