Impact of a SiGe interfacial layer on the growth of a SiC layer on Si with voids at the interface
Thin Solid Films(2018)
摘要
A comparative study is performed of the properties of SiC films, grown in the presence and absence of a Si1−xGex interfacial layer on top of a Si(111) substrate with x = 0.23. The SiC film growth is carried out at 960 °C by carbonization of the substrates with a solid carbon source using molecular beam epitaxy, leading to void formation at the SiC/substrate interface. The film properties have been investigated by transmission electron microscopy, x-ray diffraction, Rutherford backscattering spectrometry, and atomic force microscopy. The results show that the presence of the Si1−xGex layer improves the crystal quality and surface smoothness.
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关键词
SiC,Voids,Molecular beam epitaxy,SiGe interfacial layer
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