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|Title:||Impacts of size and cross-sectional shape on surface lattice constant and electron effective mass of silicon nanowires|
|Citation:||Yao, D., Zhang, G., Lo, G.-Q., Li, B. (2009). Impacts of size and cross-sectional shape on surface lattice constant and electron effective mass of silicon nanowires. Applied Physics Letters 94 (11) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3103366|
|Abstract:||We investigate the surface lattice and electronic structure of  oriented hydrogen-passivated silicon nanowires (SiNWs) of different cross-sectional shapes by using the first-principles tight-binding method. Remarkable quantum confinement effects are observed on the surface lattice constant and the electron effective mass. Moreover, with the same cross-sectional area, the triangular-SiNW has more obvious size dependence than rectangular-SiNW. The significant size and cross-sectional shape effects are explained by the concept of surface-to-volume ratio. Our results demonstrate that due to the smaller electron effective mass, the rectangular-SiNW has obvious advantage over triangular-SiNW in application in higher on current in SiNW transistor. © 2009 American Institute of Physics.|
|Source Title:||Applied Physics Letters|
|Appears in Collections:||Staff Publications|
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