Inelastic electron background function for ultraviolet photoelectron spectra

We present a simple approach to the determination of inelastic backgrounds in low-energy electron spectra such as UPS that fits the spectra much better than does the iterative integral background which is generally used in higher-energy spectroscopies such as XPS. Including the secondary-electron ca...

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Bibliographic Details
Published in:Journal of electron spectroscopy and related phenomena 1993-10, Vol.63 (3), p.253-265
Main Authors: Li, Xiaomei, Zhang, Zhaoming, Henrich, Victor E.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electron and ion emission by liquids and solids
impact phenomena
Exact sciences and technology
Photoemission and photoelectron spectra
Physics
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Summary:We present a simple approach to the determination of inelastic backgrounds in low-energy electron spectra such as UPS that fits the spectra much better than does the iterative integral background which is generally used in higher-energy spectroscopies such as XPS. Including the secondary-electron cascade process explicitly yields a non-iterative function that gives a good description of the inelastic background in UPS spectra from transition-metal oxides for low photon energies. For photon energies above about 40 eV but below the XPS region, the background function is not always able to adequately model the spectra; the discrepancy cannot be removed by a more sophisticated treatment of the electron scattering function.
ISSN:0368-2048
1873-2526
DOI:10.1016/0368-2048(93)87007-M