1. Zernike Institute
for Advanced Materials, University of Groningen, Nijenborgh 4, Groningen 9747AG, The Netherlands
2. Department of Advanced Materials Science, School of Frontier
Sciences, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba 277−8561, Japan
3. JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
4. Research
Center for Organic Electronics, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
5. Materials for Electronics and Energy Technology, Friedrich-Alexander-Universität Erlangen−Nürnberg, Martensstraße 7, 91058 Erlangen, Germany
6. Energie Campus Nürnberg, Fürther Straße 250, 90429 Nürnberg, Germany