期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 1, 期 31, 页码 4779-4784出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3tc30752b
关键词
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资金
- 973 program [2012CB326407]
- National Natural Science Foundation of China (NSFC) [51072084, 51002083, 51202115]
- Zhejiang Provincial Science Foundation for Distinguished Young Scholars [R4100242]
- Zhejiang Provincial Natural Science Foundation of China (ZJNSFC) [Y4110529]
- Natural Science Foundation of Ningbo Municipal Government [2011B1009, 2011A610182, 2011A610097]
In the present work, we report the growth of flexible SiC quasialigned nanoarrays with N dopants on carbon fabric substrate via the catalyst-assisted pyrolysis of a polymeric precursor. The resultant products are systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM) and energy-dispersive X-ray spectroscopy (EDS). The as-synthesized SiC nanowires are single-crystalline and grow along the [111] direction with a uniform spatial distribution of N dopants. The effect of the distance between the SiC array and the anode on the Field emission (FE) properties was investigated. FE measurements show that these N-doped SiC nanoarrays could be an excellent candidate for field emitters with very low turn-on fields of 1.90-2.65 V mu m(-1) and threshold fields of 2.53-3.51 V mu m(-1), respectively, which can be mainly attributed to the decrease of work function induced by the N dopants.
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