1. State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and EngineeringJilin University Changchun 130012 China
2. State Key Laboratory of Superhard Materials andCollege of PhysicsJilin University Changchun 130012 China
3. State Key Laboratory of Integrated OptoelectronicsKey Laboratory of Automobile Materials of MOE and College of Materials Science and EngineeringJilin University Changchun 130012 China
4. Department of Materials Science and EngineeringCentre for Functional Photonics (CFP)City University of Hong Kong Hong Kong SAR China
5. Department of Chemistry and PhysicsLouisiana State University Shreveport LA 71115 USA