State Key Laboratory of Superlattices and Microstructures,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China;
College of Materials Science and Opto-Electronic Technology,University of Chinese Academy of Sciences,Beijing 100049,China;
Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education,Synergetic Innovation Center for Quantum Effects and Applications,Department of Physics,Hunan Normal University,Changsha 410081,China;
Si-based luminescence; band offset; lattice mismatch; heterovalent semiconductors;