無損表征氮化鎵外延熱物性的瞬態(tài)熱反射技術(shù)Transient thermoreflectance technique for non-invasively characterizing the thermal properties of GaN epitaxial wafer袁超武漢大學(xué)工業(yè)科學(xué)研究院研究員YUAN ChaoProfessor of The Institute of Technological Sciences, Wuhan University