氮化物的范德華外延：基底結構、多性能控制和紫外光電器件應用Van der Waals Epitaxy of Nitrides: Substrate Construction, Multi-Properties Control and Ultraviolet Optoelectronic Device Application孫曉娟中科院長春光機所研究員SUN XiaojuanProfessor of Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences