1. Michael Grätzel Center for Mesoscopic Solar Cells
2. Wuhan National Laboratory for Optoelectronics
3. School of Optical and Electronic Information
4. Huazhong University of Science and Technology
5. Wuhan 430074
6. Institute of Advanced Materials (INAM)
7. Universitat Jaume I
8. 12006 Castelló
9. Spain
10. Department of Chemistry