作者: Bernard Pichaud , N. Burle , Michael Texier , C. Fontaine , V.I. Vdovin
DOI: 10.4028/WWW.SCIENTIFIC.NET/SSP.156-158.251
关键词: Nucleation 、 Materials science 、 Dislocation 、 Crystallography 、 Anisotropy 、 Crystallographic defect 、 Relaxation (NMR) 、 Condensed matter physics 、 Vicinal 、 Semiconductor 、 Layer (electronics)
摘要: The nucleation of dislocation in semiconductors is still a matter debate and especially heteroepitaxial films. To understand this process the classical models are presented discussed. Two main points then developed: emission dislocations from surface steps role point defects agglomeration on nucleation. Recent atomic simulation half loops experimental evidences anisotropic relaxation GaInAs films deposited vicinal (111) GaAs substrates strongly support as preferential sites for In low temperature buffer layer structures (SiGe/Si) an original structure observed which corresponds to different glide systems by unique centre.