1. Institute of Optoelectronic Materials and Technology, South China Normal University, 55 Zhongshan Avenue West, Tianhe
District, Guangzhou 510631, People’s Republic of China
2. Research Center for Solar Energy Chemistry, Osaka University, 1-3 Machikaneyama, Toyonaka, Osaka 560-8531, Japan
3. Department of Chemistry, Konan University, 9-1 Okamoto, Higashinada, Kobe, Hyogo 658-8501, Japan