XPS-spectra of the valence band of pyrolytic graphite with different amounts of contamination by oxygen have been investigated. The strong influence of oxygen on the XPS-spectra is discussed in terms of adsorbed as well as chemisorbed oxygen. A carbon valence band shape free from distortion by oxygen is presented. © 1974.
Kieser, J., & Trogus, H. (1974). On the influence of oxygen on the valence band shape of carbon measured by XPS. Physics Letters A, 48(6), 401–402. https://doi.org/10.1016/0375-9601(74)90596-9