Abstract
In past studies, significantly high hole mobility was demonstrated in (110)-oriented strained Si films. In the case of the heterostructures where (110)-oriented SiGe is used as a strain-relaxed buffer layer, the development process of defects in the SiGe layer is important for the electronic properties. A characteristic tilt is frequently found in strain-relaxed SiGe layers grown on Si(110) substrates. In this study, a strain relaxation process including twin generation is identified as the microscopic origin of the tilt. In this process, inhomogeneity in the distribution of the twin configuration is relevant to the tilt phenomenon.
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This work was supported by JSPS KAKENHI Grant Number JP21K04900.
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Arimoto, K., Sakata, C., Hara, K.O. et al. Crystalline Morphology of SiGe Films Grown on Si(110) Substrates. J. Electron. Mater. 52, 5121–5127 (2023). https://doi.org/10.1007/s11664-023-10425-7
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DOI: https://doi.org/10.1007/s11664-023-10425-7