1. Laboratory of Photonics and Interfaces École Polytechnique Fédérale de Lausanne Lausanne Switzerland
2. Laboratory of Photomolecular Science École Polytechnique Fédérale de Lausanne Lausanne Switzerland
3. Institute of Photoelectronic Thin Film Devices and Technology, Solar Energy Research Center, Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Ministry of Education Engineering Research Center of Thin Film Photoelectronic Technology, Renewable Energy Conversion and Storage Center Nankai University Tianjin China