Adjusting the Morphology and Properties of SiC Nanowires by Catalyst Control
Science and Technology on Thermostructural Composite Materials Laboratory, Northwestern Polytechnical University, West Youyi Rd, No. 127, Xi’an 710072, China
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Materials 2020, 13(22), 5179; https://doi.org/10.3390/ma13225179
Received: 19 October 2020
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Revised: 9 November 2020
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Accepted: 10 November 2020
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Published: 17 November 2020
(This article belongs to the Special Issue Silicon Carbide: From Fundamentals to Applications)
We report on the growth of SiC nanowires on a single crystal Si substrate by pyrolysis of polycarbosilane and using two catalyst (Al2O3 and Ni) films with different thickness (2, 4, and 6 nm). The catalyst films were deposited on the Si substrate, and the SiC nanowires were grown according to two mechanisms, i.e., the oxide-assisted growth mechanism and vapor- liquid-solid mechanism. As a result, pearl-chain-like SiC nanowires and straight SiC nanowires were obtained. The prepared nanowires exhibited excellent photoluminescence properties, emission spectra displaying two emission peaks at 395 and 465 nm, and have good thermal stability below 1000 °C. The experimental results revealed the importance of the catalyst in controlling the morphology and properties of SiC nanowires.
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Keywords:
silicon carbide nanowires; vapor-solid-liquid mechanism; oxide-assisted growth mechanism; photoluminescence; thermal stability
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MDPI and ACS Style
Guo, C.; Cheng, L.; Ye, F.; Zhang, Q. Adjusting the Morphology and Properties of SiC Nanowires by Catalyst Control. Materials 2020, 13, 5179. https://doi.org/10.3390/ma13225179
AMA Style
Guo C, Cheng L, Ye F, Zhang Q. Adjusting the Morphology and Properties of SiC Nanowires by Catalyst Control. Materials. 2020; 13(22):5179. https://doi.org/10.3390/ma13225179
Chicago/Turabian StyleGuo, Chuchu, Laifei Cheng, Fang Ye, and Qing Zhang. 2020. "Adjusting the Morphology and Properties of SiC Nanowires by Catalyst Control" Materials 13, no. 22: 5179. https://doi.org/10.3390/ma13225179
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