1. Zentrum für Innovationskompetenz SiLi-nano; 06120 Halle Germany
2. Institut für Physik; Martin-Luther-Universität Halle-Wittenberg; 06120 Halle Germany
3. Department of Physics; University of Warwick; Coventry CV4 7AL UK
4. Fritz-Haber-Institut der Max-Planck-Gesellschaft; 14195 Berlin Germany
5. School of Metallurgy and Materials; University of Birmingham; B15 2TT Birmingham UK
6. Max-Planck-Institut für Mikrostrukturphysik; 06120 Halle Germany
7. School of Semiconductor and Chemical Engineering; Chonbuk National University; Jeonju 54596 Republic of Korea
8. Science institute; University of Iceland; Reykjavik IS-104 Iceland
9. Fraunhofer Center for Silicon Photovoltaics CSP; Halle 06120 Germany
10. Institute of Nano Science and Technology; Hanyang University; Seoul 04763 Republic of Korea
11. College of Science; Engineering & Health; RMIT University; Melbourne VIC 3000 Australia