1. Laboratório de Nanotecnologia e Energia Solar (LNES) University of Campinas (UNICAMP) Campinas 13083‐970 Brazil
2. Brazilian Center for Research in Energy and Materials (CNPEM) Brazilian Synchrotron Light Laboratory (LNLS) Campinas 13083‐100 Brazil
3. Laboratory of Photomolecular Science (LSPM) Institute of Chemical Sciences and Engineering (ISIC) École Polytechnique Fédéral de Lausanne (EPFL) Lausanne 1015 Switzerland