1. Sino‐Russian International Joint Laboratory for Clean Energy and Energy Conversion TechnologyCollege of PhysicsJilin University Changchun 130012 P. R. China
2. International Center of Future ScienceJilin University Changchun City 130012 P. R. China
3. State Key Laboratory on Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University Changchun 130012 P. R. China