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Surface chemistry of Zn3P3 single crystals studied by XPS

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Abstract

X-ray photoemission spectroscopy (XPS) has been used to study the surface reaction of Zn3P2 single crystals.

The spectra of crystals exposed to H2, O2, CO2, O2+H2O or CO2+H2O during a four week period were compared to the spectra of as-grown or in UHV scraped samples. For samples contaminated with the wet gases O2+H2O and CO2+H2O additional phosphorus core levels together with a shift of the zinc core levels were observed. For crystals exposed to atmosphere during several months no phosphorus could be detected on the gasgrown surface, whereas the stochiometry of Zn3P2 was maintained within the bulk. Crystals with scraped surfaces showed no moisture sensitivity. No surface contamination was also detected for Zn3P2 crystals deposited with up to 1000 L H2O or exposed to atmosphere during 30 min.

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Authors and Affiliations

  1. Universität, Fakultät für Physik, D-7750, Konstanz, Fed. Rep. Germany

    U. Elrod, M. Ch. Lux-Steiner, M. Obergfell & E. Bucher

  2. Laboratorium für Festkörperphysik, ETH Zürich, CH-8093, Zürich, Switzerland

    L. Schlapbach

Authors
  1. U. Elrod
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  2. M. Ch. Lux-Steiner
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  3. M. Obergfell
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  4. E. Bucher
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  5. L. Schlapbach
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Elrod, U., Lux-Steiner, M.C., Obergfell, M. et al. Surface chemistry of Zn3P3 single crystals studied by XPS. Appl. Phys. B 43, 197–201 (1987). https://doi.org/10.1007/BF00695623

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  • DOI: https://doi.org/10.1007/BF00695623

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