1. Faculty of Chemistry, Brno University of Technology, Purkyňova 118, CZ-612 00 Brno, Czech Republic
2. Department of Advanced Materials, Hannam University, 70 Hannamro, Daedeok-Gu, Daejeon 34430, Republic of Korea
3. Linz Institute for Organic Solar Cells (LIOS), Institute of Physical Chemistry, Johannes Kepler University Linz, Altenberger Straße 69, 4040 Linz, Austria