1. Center of Excellence for Advanced Materials and Sensing Devices, Research
Unit for New Functional Materials, Ruđer Bošković Institute,
Bijenička c. 54, Zagreb 10000, Croatia
2. Linz Institute for Organic Solar Cells (LIOS), Physical Chemistry,
Johannes Kepler University, Altenbergerstraße 69, Linz 4040,
Austria
3. Materials for Electronics and Energy Technology (i-MEET),
Friedrich-Alexander Universität Erlangen-Nürnberg,
Martensstraße 7, 91058 Erlangen, Germany and Energie Campus Nürnberg (EnCN), Fürther Straße 250, Nürnberg 90429,
Germany