1. Institute of Materials for Electronics and Energy Technology (I-MEET); Friedrich-Alexander-University Erlangen-Nuremberg; Martensstraße 7 91058 Erlangen Germany
2. Instituto de Telecomunicações; Instituto Superior Técnico; Av. Rovisco Pais P-1049-001 Lisboa Portugal
3. Bavarian Center for Applied Energy Research (ZAE Bayern); Haberstrasse 2a 91058 Erlangen Germany
4. Department of Chemistry and Centre for Plastic Electronics; Imperial College London; London SW7 2AZ UK
5. KAUST Solar Center (KSC); King Abdullah University of Science and Technology (KAUST); Thuwal 23955-6900 Saudi Arabia