The cadmium seleniophosphate (CdPSe3) XPS and XAES spectra

Abstract The XPS and XAES spectra of the cadmium seleniophosphate (CdPSe 3 ) single crystals have been measured, at room temperature, using Al Kα (1486.6 eV) X-rays source. The analyzed core level XPS spectra of the CdPSe 3 compositional atoms have emphasized the absence of non-equivalent atoms in this compound. The cadmium 4d levels show a localized character according to the so-called transition-metal weakly interacting model. As regards the XAES spectra, the selenium L 23 M 45 M 45 and cadmium M 45 N 45 N 45 Auger series have been investigated and the nature of the CdSe bond has been analyzed by calculating the Cd modified Auger parameter in CdPSe 3 . The deduced Cd modified Auger parameter shift agrees well with the CdPSe 3 energy bandgap E g .