SoLIAS
Solid Liquid Interface Analysis System

SoLIAS

We operate a dedicated UHV system for Photoelectron Spectroscopy (PES) and X-ray Absorption Spectroscopy (XAS) experiments with synchrotron radiation as excitation at the Berlin synchrotron facility (BESSY II) located in Berlin-Adlershof. This system addresses the surface properties of materials as well as their interface with adsorbants:

Further information about the SOLIAS at BESSY II can be found at HZB.

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Detailed Experimental Setup

SoLIAS at U49-2/PGM-1

Scheme of the SoLIAS

Thin film growth:

  • Thin film growth by physical vapor deposition (PVD) techniques.

Surface treatments:

  • Surface cleaning and recrystallisation by sputter-milling and annealing
  • Gas adsorption (liquid nitrogen cooling possible)
  • Electrochemistry cell: Electrochemical treatments under inert gas atmosphere with a direct sample transferred to the vacuum without having contact to the atmosphere.

Surface analysis techniques:

  • Photoelectron Spectroscopy (PES)
  • X-ray Absorption Spectroscopy (XAS)
  • Low Energy Electron diffraction (LEED)

Electrochemical cell

Scheme of gas adsorption on cooled sample holder

Embedding at BESSY II

To keep a high degree of flexibility the SoLIAS system is mounted on a moveable frame to make the attachment to and operation at various beam lines possible. At BESSY II mainly the PM-3 beam line with photon energies 20 … 1900 eV is used for PES experiments with varying excitation energy and thus varying probed depth. In addition surface sensitive x-ray absorption experiments (XAS) are possible.