ThermoScientific ESCALAB 250 X-ray Photoelectron Spectrometer

XPS provides:

  • Identification of all elements (except H and He) present in the outermost 100Å of a surface in concentrations > 0.1 atomic %
  • Determination of the elemental surface composition (±10%)
  • Information on lateral variation in composition (resolution ˜ 150µm)
  • Information about the molecular environment (oxidation state, bonding atoms, etc.)
  • Also known as Electron Spectroscopy for Chemical Analysis (ESCA)

Typical Applications:

  • Identification of organic groups using derivatization
  • Nondestructive elemental depth profiles
  • Destructive elemental depth profiles several thousand Å into the sample
  • Variable temperature analysis
University of Oregon