Core excitons in amorphous semiconductors Evangelisti, F; PATELLA, FULVIA ; Riedel, RA; Margaritondo, G; Fiorini, P; Perfetti, P; Quaresima, C. 1984-01-01 Abstract Core excitonic effects at the L2,3 absorption edge were investigated with a combination of optical and synchrotron-radiation photoemission techniques in crystalline, amorphous, and amorphous-hydrogenated silicon and silicon-carbon alloys. Our results support a Frenkel-type nature of these excitons. © 1984 The American Physical Society.
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