1. Institute for Chemistry and Technology of Organic Materials, Graz University of Technology, Stremayrgasse 16, 8010 Graz, Austria, Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, 8010 Graz, Austria, Institute of Physics, University of Graz, Universitätsplatz 5, 8010 Graz, Austria, Institute of Physics, Montanuniversität Leoben, Franz Josef Strasse 18, 8700 Leoben, Austria, and Institute of Chemistry of Polymeric Materials, Montanuniversität Leoben, Franz Josef Strasse 18,...