X-RAY-SPECTRA OF SOME TERNARY CRYSTAL AND GLASS SEMICONDUCTORS

X-ray absorption K-edges, fluorescent K-bands, and primary emission L( 2,3)-bands of sulphur in crystalline and amorphous phases of semicondu ctor compounds AsSI, AgAsS2, GeAsS, GeS2, and As2S3 have been investig ated. The superposition of X-ray spectra of different kinds using the common energy scale reveals the electron structure of the compounds in vestigated and the character of chemical bonding in them. For AsSI, Ag AsS2, GeAsS and As2S3 it is found that by transition from crystal to g lass the electron density of states distribution in the valence and co nduction bands does not change because of the too little changes of th e short-range ordering by amorphization.