Qin, Peng
Tanaka, Soichiro
Ito, Seigo
Tetreault, Nicolas
Manabe, Kyohei
Nishino, Hitoshi
Nazeeruddin, Mohammad Khaja
Grätzel, Michael
Article History
Received: 16 January 2014
Accepted: 8 April 2014
First Online: 12 May 2014
Competing interests
: The authors declare no competing financial interests.