X. Q. Liu¹, X. B. Li², L. Zhang¹, Y. Q. Cheng³, Z. G. Yan¹, M. Xu³, X. D. Han¹, S. B. Zhang^2,4, Z. Zhang^1,5, and E. Ma³

• ¹Institute of Microstructure and Property of Advanced Materials Beijing University of Technology Beijing, 100124, China
• ²State Key Laboratory on Integrated Optoelectronics College of Electronic Science and Engineering Jilin University Changchun 130012, China
• ³Department of Materials Science and Engineering Johns Hopkins University Baltimore, Maryland 21218, USA
• ⁴Department of Physics, Applied Physics, and Astronomy Rensselaer Polytechnic Institute Troy, New York 12180, USA
• ⁵State Key Laboratory of Silicon Materials Department of Materials Sciences and Engineering Zhejiang University Hangzhou 310027, China