1. Donostia
International Physics Center, Paseo Manuel Lardizabal 4, 20018 San Sebastián, Spain
2. Centro de Física
de Materiales (CSIC-UPV/EHU) - Materials Physics Center (MPC), Paseo Manuel Lardizabal 5, 20018 San Sebastián, Spain
3. Ikerbasque,
Basque
Foundation for Science, 48011 Bilbao, Spain
4. Department
of Energy Conversion and Storage, Technical University of Denmark, DK-4000 Roskilde, Denmark
5. Department
of Chemistry and Biochemistry, Department of Materials, Center for
Polymers and Organic Solids, University of California, Santa Barbara, California 93106, United States
6. Chemical
Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United States
7. CNR-IOM, Laboratorio
Nazionale TASC, Basovizza SS-14 Km.
163.5, Trieste 34149, Italy
8. Departamento
de Física Aplicada I, Universidad del Pais Vasco, Paseo
Manuel Lardizabal 5, 20018 San Sebastián, Spain