Jiang Fei, Choy Wallace C H, Li Xinchen, Zhang Di, Cheng Jiaqi
Department of Electrical and Electronic Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China.
Adv Mater. 2015 May 13;27(18):2930-7. doi: 10.1002/adma.201405391. Epub 2015 Mar 26.