作者机构:Key Laboratory of Semiconductor Materials Science and Beijing Key Laboratory of Low Dimensional Semiconductor Materialsand Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
相关基金:Project supported by the State Key Development Program for Basic Research of China (Nos. 2012CB921304, 2013CB632805, 2012CB 619306) and the National Natural Science Foundation of China (No. 61474114).