Phosphine adsorption and the production of phosphide phases on Cu(0 0 1)

L. V. Goncharova, S. K. Clowes, R. R. Fogg, A. V. Ermakov, B. J. Hinch

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

The adsorption and thermal decomposition of PH3 on a Cu(0 0 1) surface has been investigated by means of high-resolution helium atom scattering, Auger electron spectroscopy and temperature programmed desorption. Phosphine adsorption at Tx < 160 K produces a molecular overlayer structure with short-range order. Annealing of the low-temperature structure results in decomposition of the adsorbed PH3, and desorption of hydrogen between Tx = 250 K and Tx = 320 K. Molecular phosphine was not seen to desorb. Phosphine deposition at room temperature or above produces well-ordered copper-phosphorus phases exhibiting either c(6 × 8) or c(6 × 6) diffraction patterns, depending upon the deposition conditions. Auger electron spectra indicate that these ordered phases contain approximately 1/3 ML or more of phosphorus. Possible atomic models for the overlayer structures are discussed.

Original languageEnglish (US)
Pages (from-to)553-566
Number of pages14
JournalSurface Science
Volume515
Issue number2-3
DOIs
StatePublished - Sep 2002

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Keywords

  • Atom-solid scattering and diffraction - inelastic
  • Copper
  • Phosphine
  • Single crystal surfaces
  • Sticking
  • Surface structure, morphology, roughness, and topography

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