Dr. Thomas Modes (Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP / DE), Dr. Olaf Zywitzki (Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP / DE), Dr. Stephan Barth (Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP / DE), Dr. Hagen Bartzsch (Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology FEP / DE)