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Silicon Nanowire: a New Shape of Crystalline Silicon

  • Y.F. Zhang (a1), Y.H. Tang (a1), N. Wang (a1), C. S. Lee (a1), D.P. Yu (a1), I. Bello (a1) and S.T. Lee (a1)...

Abstract

Silicon nanowires have been synthesized by using a high-temperature laser ablation method. Transmission electron microscopic investigation shows that the nanowires are crystalline Si, and have diameters ranging from 3 to 43 nm and lengths up to a few hundreds μm. Raman scattering spectrum shows an asymmetric peak at the same position as that of bulk crystalline silicon. The x-ray diffraction revealed an important contribution from surface oxide. This is due to the high surface-to-volume ratio. Visible photoluminescence (PL) was observed in nanowires with sub-5 nm diameter.

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Silicon Nanowire: a New Shape of Crystalline Silicon

  • Y.F. Zhang (a1), Y.H. Tang (a1), N. Wang (a1), C. S. Lee (a1), D.P. Yu (a1), I. Bello (a1) and S.T. Lee (a1)...

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