Chemical order in GexAsySe1-x-y glasses probed by high resolution X-ray photoelectron spectroscopy
We have measured high-resolution x-ray photoelectron spectra of Ge xAsySe1-x-y glasses with a mean coordination number (MCN) from 2.2 to 2.78. The valence band spectra showed that a number of Se–Se–Se trimers can be found in Se-rich samples, whilst multiband features induced by phase separation can be observed in extremely Se-poor samples. When the Ge, As, and Se 3d spectra were decomposed into several doublets, which correspond, respectively, to different chemical environments, the perfect...[Show more]
|Collections||ANU Research Publications|
|Source:||Journal of Applied Physics|
|01_Xu_Chemical_order_in_2014.pdf||Published Version||858.5 kB||Adobe PDF|
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