Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9829547 | Journal of Crystal Growth | 2005 | 6 Pages |
Abstract
Relaxed SiGe-on-Insulator (SGOI) is fabricated using a modified fabrication technique based on Ge condensation by oxidizing the SiGe layer on SOI. In this procedure, the Ge atoms are condensed into the remaining SiGe layer due to the rejection of Ge atoms from the oxide layer and the large diffusion coefficient of Ge in SiGe. Raman measurements reveal that the strain in the SiGe layer is fully relaxed at high oxidation temperature (â¼1150°C). Atomic force microscopy (AFM) and transmission electron microscopy (TEM) results indicate that no dislocation is introduced for strain relaxation during the oxidation process. The strain relaxation is explained by a relaxation model involving a compliant substrate, on which the SiGe layer expands laterally via an ultra-low viscosity slippage plane at the SiGe/buried oxide (BOX) interface.
Related Topics
Physical Sciences and Engineering
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Condensed Matter Physics
Authors
Zengfeng Di, Anping Huang, Paul K. Chu, Miao Zhang, Weili Liu, Zhitang Song, Suhua Luo, Chenglu Lin,