1. Key Laboratory of Photochemical Conversion and Optoelectronic MaterialsTechnical Institute of Physics and Chemistrythe Chinese Academy of Sciences Beijing 100190 P. R. China
2. School of Future TechnologiesUniversity of Chinese Academy of Science Beijing 100049 P. R. China
3. Center for NanochemistryBeijing Science and Engineering Center for NanocarbonsBeijing National Laboratory for Molecular SciencesCollege of Chemistry and Molecular EngineeringPeking University Beijing 100871 P. R. China
4. Soochow Institute for Energy and Materials Innovations (SIEMIS)College of PhysicsOptoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and TechnologySoochow University Suzhou 215006 P. R. China