SoLIAS

Plasma in einer Vakuumkammer

SoLIAS

SoLIAS attached to the U49-2/PGM-1 with a CVD process chamber
SoLIAS attached to the U49-2/PGM-1 with a CVD process chamber

Solid Liquid Interface Analysis System

Description of the system

The surface science division of the material science faculty of the Technical University of Darmstadt operates a dedicated UHV system for photoemission spectroscopy (PES) experiments with synchrotron radiation as excitation at the Berlin synchrotron facility (BESSY II) located in Berlin-Adlershof.

Sketch of the SoLIAS
Sketch of the SoLIAS

The so called SoLIAS system is especially designed for the investigation of the solid-liquid interface and offers the possibility to deposit volatile materials on surfaces of interest and freeze them (LN2) in order to make PES or LEED analysis.

The SoLIAS system is used within a common research group (CRG) formed by the Helmholtz-Zentrum Berlin, the Brandenburg Technical University in Cottbus and the Technical University of Darmstadt. To keep a high degree of flexibility it is mounted on a moveable frame to make the attachment to various beam lines possible. At BESSY II mainly the U49-2/PGM 1 and TGM-7 beam lines with photon energies of 10 … 120 eV und 90 … 2000 eV are used for UPS- or XPS-experiments with varying excitation energy. In addition to the mentioned PES experiments also x-ray absorption experiments (XAS) are possible to be carried out.

At the moment the SoLIAS system is mainly used for fundamental research on Li-batteries, organic solar cells, semiconductors for water splitting and absorber materials for thin film photovoltaics.

Electrochemistry cell attached to the SoLIAS system
Electrochemistry cell attached to the SoLIAS system
Sketch of the electrochemistry cell
Sketch of the electrochemistry cell
Adsorption on the cold sample holder (principle)
Adsorption on the cold sample holder (principle)