| Autor: |
Theye, Marie-Luce, Gheorghiu, Adriana, Senemaud, Christiane, Kotkata, Mohamed, Kandil, Kandil |
| Zdroj: |
Philosophical Magazine B; February 1994, Vol. 69 Issue: 2 p209-222, 14p |
| Abstrakt: |
X-ray photoelectron spectroscopy experiments were performed on as-deposited evaporated a-GexSe100-x compound films, with x ranging from 20 to 50 at.%, in order to investigate the changes in the core level and valence band electron distribution as a function of composition. The results are interpreted in terms of short-range ordering, taking the stoichiometric a-GeSe2 compound as a reference. The valence band spectra are compared to theoretical predictions and discussed in relation to optical data obtained on the same samples. It is shown that 4:2 coordination is maintained over the whole composition range, and that chemically ordered structural units are favoured in all cases. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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