1. Leibniz-Institute of Photonic Technology Department Functional Interfaces Albert-Einstein-Straße 9 07745 Jena Germany
2. Institute of Physical Chemistry Friedrich Schiller University Helmholtzweg 4 07743 Jena Germany
3. Center of Energy and Environmental Chemistry (CEEC Jena) Friedrich Schiller University Helmholtzweg 4 07743 Jena Germany