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-Str. 6 91052 Erlangen Germany
3. Bavarian Center for Applied Energy Research (ZAE Bayern); Haberstr. 2a 91058 Erlangen Germany