The work was supported by the National Key R&D Program of China(2019YFA0708200);the National Natural Science Foundation of China(T2188101,52125307,52021006 and 12074369);the“2011 Program”from the Peking-Tsinghua-IOP Collaborative Innovation Center of Quantum Matter,Youth Innovation Promotion Association,CAS;the Youth Supporting Program of Institute of Semiconductors.
Heteroepitaxy can reduce the cost and widen the application range of semiconductor film synthesis and device fabrication.However,the lattice and thermal expansion coefficient mismatches between epilayers and substrate...