Growth of one-dimensional Ag/Si/SiOx capsule nanostructures by self-assembled SiOx template |
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| Authors: | XN Zhang Z Zhang CR Li |
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| Institution: | (1) Beijing Laboratory of Electron Microscopy, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing, 100080, China |
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| Abstract: | One-dimensional Ag/Si/SiOx capsule nanostructures have been synthesized by thermal evaporation of the mixture of SiO and Ag2O. Products were analyzed by using SEM, TEM, HREM and element map. Two kinds of morphologies were observed. Inside the amorphous SiOx shell, Ag nanowires interspersed by short segments of Si were formed when Ag content was higher than Si. Ag and Si contacted well and nanosize MS (metal-semiconductor) structures were obtained. One-dimensional periodic nanostructures that Ag particles embedded in the nanowire were synthesized when Si content was higher than Ag. SiOx nanotubes were also observed. Structure analysis shows that Ag/Si/SiOx nanostructures are grown by a self-assembled SiOx template mechanism. And the growth of SiOx nanotubes is tightly related to the adding of Ag. PACS 81.07.Bc; 81.10.Bk; 61.14.-x |
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