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Nanowires are extensively used to fabricate highly sensitive electrical sensors for detection of biological and chemical species. The hole mobility can be promoted by the increasing Ge fraction in SiGe, achieved by the oxidation-induced Ge condensation. However, oxidation increases the number of surface states, which brings the nonnegligible contribution in mobility degradation. In this work, 3-aminopropyltrimethoxysilane...
Increasing the fraction of Ge in SiGe-on-Insulator (SGOI) using Ge condensation by oxidation significantly increases hole mobility. This effect can be exploited to improve the sensitivity of SGOI nanowire. However, our previous studies found that the sensitivity of an SGOI nanowire is degraded as the Ge fraction increases over 20%, because of the surface state of SiGe is unstable when the Ge fraction...
Because of the large surface-to-volume ratio of nano-structure, the silicon nanowires (SiNWs) provide a high sensitivity for highly sensitive detection of biological and chemical species. Moreover, the SiGe-on-Insulator (SGOI) by Ge-condensation process can enhance the mobility of hole carrier and then improve the nanowires's conductance. In this study, we discuss SiGe nanowire structural effect by...
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