Photophysics and Photochemistry of NO on Ag(111), Cu(111), and Si(111)7 × 7

  • R. Franchy
  • S. K. So
  • Z. C. Ying
  • W. Ho
Part of the Springer Series in Surface Sciences book series (SSSUR, volume 19)


We have performed photon induced desorption (PID) from NO adsorbed on Ag(111), Cu(111), and Si(111)7 × 7 at 85 K in the wavelength region 250–800 nm by using Xe and Hg-Xe arc lamps in combination with a monochromator (P≤30 mWcm—2). The adsorption of NO on these surfaces and subsequent changes after irradiation were characterized by high resolution electron energy loss spectroscopy (HREELS) and thermal desorption spectroscopy (TDS). On Ag(111), PID of NO and N2O have been observed from the NO saturated surface. On Cu(111), PID of both NO and N2O has also been observed. N2O is photosynthe-sized from photoinduced reactions. On Si(111)7 × 7, photon irradiation induces both desorption and dissociation of NO and photosynthesis of N2O. The N2O products partially desorb intact and partially dissociate into N2 and O, which leads to N2 desorption. PID of NO on Ag(111) and Cu(111) is state selective and occurs primarily for NO adsorbed in atop states. On Si(111)7 × 7, both atop and bridge bonded NO are photoactive. From the wavelength dependences of the PID, we suggest that the photoexcitation of the adsorbate (2πocc level) is the more important mechanism for Ag and Cu for photon energy≥3.4 eV; the substrate mediated process, however, is more dominant for Si.


Incident Photon Electron Energy Loss Spectroscopy Wavelength Dependence Photon Irradiation Thermal Desorption Spectroscopy 
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  1. [1]
    T.J. Chuang, Surf. Sci. Rep. 3 (1983)Google Scholar
  2. [2]
    W.Ho, Comments Cond. Mat. Phys. 13, 293 (1988); W.Ho, this volume.Google Scholar
  3. [3]
    W.D.Mieher and W.Ho, J. Chem. Phys. 91, 2755 (1989).CrossRefGoogle Scholar
  4. [4]
    K.G.Lloyd, A.Campion and J.M.White, Catalysis Lett. 2, 105 (1989).CrossRefGoogle Scholar
  5. [5]
    X.-Y.Zhu, S.R.Hatch, A.Campion and J.M.White, J. Chem. Phys. 91, 5011 (1989).CrossRefGoogle Scholar
  6. [6]
    See, for example, F.Budde, A.V.Hamza, P.M.Ferm, G.Ertl, A.Weide, P.Andresen, H.J-.Freund, Phys. Rev. Lett. 60, 1518, (1988); S.A. Buntin, L.J.Richter, R.R.Cavanagh and D.S.King, Phys. Rev. Lett. 61, 1321, (1988).CrossRefGoogle Scholar
  7. [7]
    See, for example, Z.Ying and W.Ho, Phys. Rev. Lett. 60, 57 (1988); S.K.So and W.Ho, Appl. Phys. A 47, 213, (1988).CrossRefGoogle Scholar
  8. [8]
    Z.C.Ying and W.Ho, J. Chem. Phys. 91, 2689 (1989).CrossRefGoogle Scholar
  9. [9]
    S.K.So, R.Franchy and W.Ho, J. Chem. Phys. 91, 5701 (1989).CrossRefGoogle Scholar
  10. [10]
    S.K.So, R. Franchy, and W.Ho, to be published.Google Scholar
  11. [11]
    J.K.Wendelken, Appl. Surf. Sci. 11/12, 172 (1982).CrossRefGoogle Scholar
  12. [12]
    H.Ibach and D.L.Mills, Electron Energy Loss Spectroscopy and Surface Vibrations (Academic, New York, 1982).Google Scholar
  13. [13]
    G.Herzberg, Molecular Spectra and Molecular Structure I, Spectra of Diatomic Molecules, 2nd ed. (Van Nostrand Reinhold, New York, 1950).Google Scholar
  14. [14]
    J.Mason, J. Chem. Soc.(Dalton) 19, (1975) and references therein.Google Scholar
  15. [15]
    W.Bach and H.D.Breuer, Faraday Disc. Chem. Soc. 58,237(1974).CrossRefGoogle Scholar
  16. [16]
    G.G.Tibbets and J.M.Burkstrand, Phys. Rev. B 16, 1536 (1977).Google Scholar
  17. [17]
    J.Küppers, F.Nitschké, K.Wandelt and G.Ertl J. Chem. Soc. Faraday. Trans. I, 75, 984 (1979).CrossRefGoogle Scholar
  18. [18]
    D.Menzel and R.Gomer, J. Chem. Phys. 41, 3311 (1964).CrossRefGoogle Scholar
  19. [19]
    R.A.Redhead, Can. J. Phys. 42, 886 (1964).CrossRefGoogle Scholar
  20. [20]
    P.R.Antoniewicz, Phys. Rev. B 21 3811 (1980).Google Scholar
  21. [21]
    K.Edamoto, S.Maehara, E.Miyazaki, T.Miyahara and H.Kato, Surf. Sci. 204, L739, (1988).CrossRefGoogle Scholar
  22. [22]
    P.D.Johnson and S.L.Hubert, Phys. Rev. B 35, 9427 (1987).Google Scholar
  23. [23]
    W.Reimer, T.Fink and J.Küppers, Surf. Sci. 139, 259 (1988).CrossRefGoogle Scholar
  24. [24]
    J.Chelikowsky, D.J.Chadi and M.L.Cohen, Phys. Rev. B 8, 2786 (1973).Google Scholar

Copyright information

© Springer-Verlag Berlin, Heidelberg 1990

Authors and Affiliations

  • R. Franchy
    • 1
  • S. K. So
    • 1
  • Z. C. Ying
    • 1
  • W. Ho
    • 1
  1. 1.Laboratory of Atomic and Solid State Physics and Materials Science CenterCornell UniversityIthacaUSA

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