1. State Key Laboratory of Alternate Electrical Power System with Renewable Energy SourcesNorth China Electric Power University Beijing 102206 China
2. Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical Technology Beijing 100029 China
3. Poly OptoElectronics Tech. Ltd. Jiangmen 529020 China
4. NAAM Research GroupFaculty of ScienceKing Abdulaziz University Jeddah 21589 Saudi Arabia