1. Key Laboratory of Physics and Technology for Advanced Batteries; Ministry of Education; College of Physics; Jilin University; Changchun 130012 P.R. China
2. College of Life Sciences; Jilin University; Changchun 130012 P.R. China
3. Energy Technology Research Institute and Research Center for; Photovoltaic Technologies; Research Center for Photovoltaics (RCPV); Higashi 1-1-1, Tsukuba Ibaraki 305-8568 Japan
4. Graduate School of Life Sciences; Ritsumeikan University, Kusatsu; Shiga 525-8577 Japan
5. Nagahama Institute of Bio-Science and Technology, Nagahama; Shiga 526-0829 Japan