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UPS studies on photodesorption of NO from Pt(001)

Authors
Journal
Chemical Physics Letters
0009-2614
Publisher
Elsevier
Publication Date
Volume
196
Issue
6
Identifiers
DOI: 10.1016/0009-2614(92)85993-k
Disciplines
  • Physics

Abstract

Abstract Changes in the electronic structure of NO adsorbed on a clean Pt(001)-hex R0.7° surface at 80 K are investigated as a function of NO exposure and after ArF excimer laser (193 nm) irradiation by ultraviolet photoelectron spectroscopy. An adsorbed NO species active to laser-stimulated desorption appears at higher coverages, and is characterized by a band derived from the 2π orbital of NO at binding energies E b = 1.6–2.7 eV below the Fermi level. In addition to the band, two peaks appear at E b = 2.5 and 3.0 eV, which are attributed to NO adsorbed on the hex and 1 × 1 areas, respectively.

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