Low‐Temperature Formation of Well‐Aligned Nanocrystalline Si/SiOx Composite Nanowires |
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Authors: | T.‐C. Wong C.‐C. Yu J.‐J. Wu |
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Abstract: | Well‐aligned nanocrystalline (nc)‐Si/SiOx composite nanowires have been deposited on various substrates at 120 °C using SiCl4/H2 in a hot‐filament chemical vapor deposition reactor. Structural and compositional analyses reveal that silicon nanocrystals are embedded in the amorphous SiOx nanowires. The nc‐Si/SiOx composite nanowires are transparent in the range 500–900 nm. Photoluminescence spectra of the nc‐Si/SiOx composite nanowires have a broad emission band, ranging from 420 to 525 nm. Water vapor from the chamber wall plays a crucial role in the formation of the well‐aligned nanowires. A possible mechanism for the formation of the composite nanowires is suggested. |
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Keywords: | Chemical vapor deposition Nanowires, inorganic Silica Silicon |
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