EPJ Web of Conferences (Mar 2013)

Surface Carrier Dynamics on Semiconductor Studied with Femtosecond Core-Level Photoelectron Spectroscopy Using Extreme Ultraviolet High-Order Harmonic Source

  • Sogawa T.,
  • Tateno K.,
  • Gotoh H.,
  • Nishikawa T.,
  • Nakano H.,
  • Kato K.,
  • Tsunoi T.,
  • Oguri K.

DOI
https://doi.org/10.1051/epjconf/20134104017
Journal volume & issue
Vol. 41
p. 04017

Abstract

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We have used a femtosecond time-resolved core-level surface PES system based on the 92-eV harmonic source to study the surface carrier dynamics that induces the transient SPV on semiconductor surfaces. We clarified the temporal evolution of the transient SPV characterized by the time of the photo-generated carrier separation and recombination. This result demonstrates the potential of this technique for clarifying the initial stage of the surface carrier dynamics after photoexcitation.