1 Laboratory of Photonics and Interfaces, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland. hong.zhang@epfl.ch.
2 Department of Materials Science and Engineering, and Organic and Carbon Electronics Laboratories (ORaCEL), North Carolina State University, Raleigh, NC, 27695, USA.
3 Centre for Hybrid and Organic Solar Energy (CHOSE), University of Rome Tor Vergata, Rome, 00133, Italy.
4 Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland.
5 Laboratory of Computational Chemistry and Biochemistry, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland.
6 Laboratory of Photonics and Interfaces, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland.
7 Kimia Solar Research Institute, Kimia Solar Company, Kashan, 87137-45868, Iran.
8 National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, NY, 11973, USA.
9 Department of Chemistry - Ångström Laboratory, Uppsala University, 751 20, Uppsala, Sweden.
10 Centre for Hybrid and Organic Solar Energy (CHOSE), University of Rome Tor Vergata, Rome, 00133, Italy. aldo.dicarlo@uniroma2.it.
11 ISM-CNR, Institute of Structure of Matter, National Research Council, via del Fosso del Cavaliere 100, 00133, Rome, Italy. aldo.dicarlo@uniroma2.it.
12 Department of Materials Science and Engineering, and Organic and Carbon Electronics Laboratories (ORaCEL), North Carolina State University, Raleigh, NC, 27695, USA. aamassi@ncsu.edu.
13 Laboratory of Photonics and Interfaces, École Polytechnique Fédérale de Lausanne, Lausanne, 1015, Switzerland. michael.graetzel@epfl.ch.