Bi, Dongqin
Yi, Chenyi
Luo, Jingshan
Décoppet, Jean-David
Zhang, Fei
Zakeeruddin, Shaik Mohammed
Li, Xiong
Hagfeldt, Anders
Grätzel, Michael
Article History
Received: 4 May 2016
Accepted: 15 August 2016
First Online: 19 September 2016
Competing interests
: The authors declare no competing financial interests.