1. Department of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Straße 24−25, 14476 Potsdam-Golm, Germany
2. School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington 6040, New Zealand
3. The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6040, New Zealand
4. Institute of Applied Radiation Chemistry, Lodz University of Technology, Wroblewskiego 15, 93590 Lodz, Poland
5. Dresden Integrated Center for Applied Physics and Photonic Materials (IAPP) and Institute for Applied Physics, Technische Universität Dresden, Nöthnitzer Straße 61, 01187 Dresden, Germany
6. Institute for Materials Research (IMO-IMOMEC), Hasselt University, Wetenschapspark 1, 3590 Diepenbeek, Belgium