XPS/UPS Study of the Electronic Structure of PdH0.6
We have studied the electronic structure of polycrystalline PdH0.6 at 100K by means of photoelectron spectroscopy (XPS and UPS). In PdH0.6 as compared to Pd the 4d-band is shifted away from EF and N(EF) is considerably decreased. In contradiction to earlier investigations we do not observe a band at 5eV. However, we see weak emission at 8eV probably related with the hydrogen induced states or with chemisorbed hydrogen. The chemical shift of the 3d5/2 core level is very small (+0.15 ± 0.10eV). A weak additional peak at 5.5eV is found on Pd samples which have been exposed to O2 at 600K.
KeywordsCore Level Ultrahigh Vacuum Weak Emission Valence Band Spectrum Binding Energy Scale
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