A simple synthesis of large-scale SiC–SiO2 nanocables by using thermal decomposition of methanol: Structure, FTIR, Raman and PL characterization |
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| Authors: | Ryongjin Kim Weiping Qin Guodong Wei Goufeng Wang Lili Wang Daisheng Zhang Kezhi Zheng Ning Liu |
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| Institution: | aState Key Laboratory on Integrated Optoelectronics, College of Electronic Science & Engineering, Jilin University, Changchun 130012, PR China;bSemiconductor Research Laboratory, Department of Physics, Kim Il Sung University, Democratic People's Republic of Korea |
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| Abstract: | Large-scale SiC nanocables were synthesized on a Ni(NO3)2-catalyzed Si substrate by using a simple and cheap method based on thermal decomposition of methanol. Based on X-ray diffraction and high-magnification transmission electron microscopy, the as-grown nanocables consisted of crystalline SiC cores and amorphous SiO2 shells. The diameters of SiC cores were 5.7–10 nm and the thicknesses of SiO2 shells were 9–20 nm. Dividing of nanocables was observed and its origin was investigated. An asymmetric feature of SiC TO band with a shoulder at the high-frequency side was attributed to the contribution of SiC TO mode. The nanocables displayed strong violet–blue emission. A possible growth mechanism was proposed. |
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| Keywords: | A1 Characterization A2 Nanostructure B1 Nanomaterials B2 Semiconducting silicon compounds |
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