1. Tianjin Key Laboratory of Photoelectronic Thin Film Devices and Technology and Institute of Photoelectronic Thin Film Devices and Technology Nankai University 38 Tongyan Road, Haihe Education Park Tianjin 300350 P. R. China
2. Tianjin Key Laboratory of Film Electronic and Communication Devices School of Integrated Circuit Science and Engineering Tianjin University of Technology 391 Binshui West Road, Xiqing District Tianjin 300384 P. R. China
3. Materials Genome Institute Shanghai University 99 Shangda Road, Baoshan District Shanghai 200444 P. R. China