Influence of temperature and photon energy on quantum yield of photoemission from real iron surfaces

详细信息    查看全文

• 作者：Yoshihiro Momose (1)
  Daisuke Suzuki (1)
  Takao Sakurai (2)
  Keiji Nakayama (3)
  
• 刊名：Applied Physics A: Materials Science & Processing
• 出版年：2014
• 出版时间：November 2014
• 年：2014
• 卷：117
• 期：3
• 页码：1525-1534
• 全文大小：1,356 KB
• 参考文献：1. H. Nienhaus, Surf. Sci. Rep. 45, 1 (2002) CrossRef
  2. A.M. Wodtke, D. Matsiev, D.J. Auerbach, Prog. Surf. Sci. 83, 167 (2008) CrossRef
  3. M. Cardona, L. Ley, Introduction, in / Photoemission in Solids I, ed. by M. Cardona, L. Ley (Springer, Berlin, 1978), pp. 1-04
  4. R.H. Fowler, Phys. Rev. 38, 45 (1931) CrossRef
  5. L.A. DuBridge, Phys. Rev. 39, 108 (1932) CrossRef
  6. W.E. Spicer, Surface analysis by means of photoemission and other photon-stimulated processes, in / Chemistry and Physics of Solid Surfaces, ed. by R. Vanselow, S.Y. Tong (CRC Press, Cleveland, 1977), pp. 235-54
  7. W.J. Baxter, Exoelectron emission from metals, in / Research Techniques in Nondestructive Testing, vol. 3, ed. by R.S. Sharpe (Academic Press, London, 1977), pp. 395-28
  8. Y. Momose, M. Honma, T. Kamosawa, Surf. Interface Anal. 30, 364 (2000) CrossRef
  9. Y. Momose, T. Kamosawa, M. Honma, M. Takeuchi, J. Surf. Finish. Soc. Jpn. 53, 675 (2002). (in Japanese) CrossRef
  10. Y. Momose, A. Satou, T. Sakurai, K. Nakayama, Surf. Interface Anal. 40, 620 (2008) CrossRef
  11. Y. Momose, Y. Yamashita, Tribol. Int. 48, 232 (2012) CrossRef
  12. R.J. Maurer, in / Photoelectric Effect in Handbook of Physics, ed. by E.U. Condon, H. Odishaw (McGlaw-Hill, New York, 1967), pp. 8-67--75
  13. M.A. Henderson, Surf. Sci. Rep. 46, 1 (2002) CrossRef
  14. A.P. Grosvenor, B.A. Kobe, N.S. McIntyre, Surf. Sci. 572, 217 (2004) CrossRef
  15. N. Hirashita, S. Tokitoh, H. Uchida, Jpn. J. Appl. Phys. 32, 1787 (1993) CrossRef
  16. G. Hechenblaikner, T. Ziegler, I. Biswas, C. Seibel, M. Schulze, N. Brandt, A. Sch?ll, P. Bergner, F.T. Reinert, J. Appl. Phys. 111, 124914 (2012) CrossRef
  17. D.T. Palmer, R.E. Kirby, F.K. King, SLAC-PUB-11355, July, 2005
  18. T.I. Quickenden, J.A. Irvin, J. Chem. Phys. 72, 4416 (1980) CrossRef
  19. N.S. McIntyre, D.G. Zetaruk, Anal. Chem. 49, 1521 (1977) CrossRef
  20. S.J. Roosendaal, A.M. Vredenberg, F.H.P.M. Habraken, Phys. Rev. Lett. 84, 3366 (2000) CrossRef
  
• 作者单位：Yoshihiro Momose (1)
  Daisuke Suzuki (1)
  Takao Sakurai (2)
  Keiji Nakayama (3)
  
  1. Department of Materials Science, Ibaraki University, Hitachi, 316-8511, Japan
  2. Ashikaga Institute of Technology, Ashikaga, 326-8558, Japan
  3. Advanced Research Institute, Chiba Institute of Technology, Narashino, 275-0016, Japan
  
• ISSN：1432-0630

文摘

The influence of temperature and incident photon energy on the photoemission quantum yield, Y s, of real iron surfaces has been investigated by thermally assisted photoemission (TAPE). Measurements were carried out using a Geiger counter under a gaseous atmosphere of He containing 1?% isobutane vapor at normal atmospheric pressure in the temperature range 25-53?°C under UV irradiation with wavelengths of 200, 210, 220, and 230?nm. The Y s obtained under irradiation at a given wavelength was found to increase with temperature, particularly more rapidly with wavelengths of greater photon energy. From the Arrhenius plots, the Y s values were found to have activation energies of 0.112-.040?eV, depending on the photon energy. The chemical composition of the surfaces after TAPE measurements at different temperatures was examined by X-ray photoelectron spectroscopy (XPS). The intensity of species thermally removed from the surface was also measured by temperature desorption spectroscopy (TDS). XPS and TDS results showed the removal of the surface water and weakly bound carbon material from the surface with temperature. It was concluded that the removal of these species with increasing temperature enabled the incident light to penetrate through the surface into the metal, causing the increase in the Y s. The dependence of the activation energies on the photon energy was explained by the change of UV light absorption spectra of the surface water, and the enhancement of the Y s with temperature was also attributed to the influence of iron cations (Fe3+) corresponding to positive holes produced in the surface oxide layer by UV light.