Details

Autor(en) / Beteiligte

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

Titel

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

Ist Teil von

• Surface science, 2002-09, Vol.515 (2), p.553-566

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2002

Quelle

Elsevier Journal Backfiles on ScienceDirect (DFG Nationallizenzen)

Beschreibungen/Notizen

• The adsorption and thermal decomposition of PH 3 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 T x <160 K produces a molecular overlayer structure with short-range order. Annealing of the low-temperature structure results in decomposition of the adsorbed PH 3, and desorption of hydrogen between T x =250 K and T x =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.