1. Key Laboratory for Photonic and Electronic Bandgap Materials Ministry of Education, School of Physics and Electronic EngineeringHarbin Normal University Harbin 150025 China
2. Center for Excellence in Nanoscience (CAS)Key Laboratory of Nanosystem and Hierarchical Fabrication (CAS)National Center for Nanoscience and Technology Beijing 100190 China
3. Department of PhysicsHarbin Institute of Technology Harbin 150080 China
4. CSIRO Manufacturing Bag 10 Clayton South VIC 3169 Australia
5. School of Chemical EngineeringGuizhou Institute of Technology Guiyang 550003 China
6. School of Physics and EngineeringZhengzhou University Zhengzhou 450001 China
7. Department of PhysicsKey Laboratory of Strongly‐Coupled Quantum Matter Physics (CAS)University of Science and Technology of China Hefei 230026 China
8. School of Physical Science and TechnologyLanzhou University Lanzhou 730000 China
9. State Key Laboratory for Superlattice and MicrostructuresInstitute of Semiconductors, Chinese Academy of Sciences Beijing 100083 China
10. State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin University Changchun 130012 China