1. State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University Changchun 130012 P. R. China
2. Institute of Functional Material Chemistry and National and Local United Engineering Lab for Power BatteryFaculty of ChemistryNortheast Normal University Changchun 130024 P. R. China
3. Beijing Tuocai Optoelectronics Technology CO. LTD Beijing 100086 P. R. China