1. Institute of Materials for Electronics and Energy Technology (I-MEET); Friedrich-Alexander-University Erlangen-Nuremberg; Martensstraße 7 91058 Erlangen Germany
2. Erlangen Graduate School in Advanced Optical Technologies (SAOT); Paul-Gordan-Straße 6 91052 Erlangen Germany
3. Department of Chemistry and Biochemistry; University of Arizona; 1306 East University Boulevard; Tucson AZ 85721 USA
4. BASF Schweiz AG; Schwarzwaldallee 215 CH-4002 Basel Switzerland
5. Bavarian Center for Applied Energy Research (ZAE Bayern); Haberstraße 2a 91058 Erlangen Germany