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Photoluminescence Properties of Silicon Nanowires and Carbon Nanotube-Silicon Nanowire Composite Arrays

Li Meng-Ke1,2, Lu Mei2, Kong Ling-Bin2, Wang Cheng-Wei1, Guo Xin-Yong3 and Li Hu-Lin2,4

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Composite arrays of multi-wall carbon nanotubes (MWNTs) and silicon nanowires (SiNWs) are fabricated by means of the chemical vapour deposition method in porous anodic aluminium oxide (AAO) templates. The results of the scanning electron microscopy, high-resolution transmission electron microscopy, and transmission electron microscopy have shown that SiNWs are successful nested or filled in the hollow cavities of synthesized MWNT arrays in AAO templates to form MWNT-SiNW composite arrays. The photoluminescence (PL) intensity degradation and a blueshift of PL peak position, usually created from the chemical instability of the SiNW surfaces, are decreased and eliminated clearly in the composite arrays. The composite arrays of MWNTs-SiNWs exhibit more enhanced intensity and stability of PL performance than the SiNW arrays deposited in AAO templates.


PACS

78.67.Ch Nanotubes

81.16.Be Chemical synthesis methods

85.35.Kt Nanotube devices

78.55.Hx Other solid inorganic materials

81.07.De Nanotubes

Subjects

Condensed matter: electrical, magnetic and optical

Electronics and devices

Nanoscale science and low-D systems

Dates

Issue 11 (November 2002)

Received 15 July 2002



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