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热化学气相沉积法在硅纳米丝上合成碳纳米管(英文) 被引量：6

Synthesis of carbon nanotubes on silicon nanowires by thermal chemical vapor deposition
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摘要 利用热化学气相沉积法在负载不同厚度催化剂的硅纳米丝(SiNW)表面生长碳纳米管(CNTs),探讨了生长条件对所合成SiNW-CNT的结构和场发射特性的影响。这种类似树状的三维结构具有较高碳纳米管表面密度及降低的电场筛除效应等潜在优势。使用拉曼光谱(Raman)、电子显微镜(SEM)、透射电子显微镜(TEM)、能量扩散分光仪(EDS)分析了碳纳米管的结构性质,并在高真空下施加电场测得碳纳米管的场发射特性。结果表明:随硅纳米丝上负载催化剂镍膜厚度的变化,所合成碳纳米管的表面特性、结晶结构及功函数改变,导致电子发射难易程度的改变,进一步影响碳纳米管的场发射特性。 Carbon nanotubes（CNTs） were grown on a silicon nanowire substrate with Ni-catalyst layers of different thicknesses using thermal chemical vapor deposition.Scanning electron microscopy was used to observe the surface morphology,and Raman spectroscopy was used to investigate the structural changes in relation to the thicknesses of the catalyst deposited on the substrate.Field-emission characteristics of CNTs were also correlated with the catalyst thicknesses.The catalyst thickness was found to effectively change the field-emission characteristics of the CNTs.Obvious changes in the diameters,population density,and morphology of CNTs were found with differences in catalyst thickness.The field-emission characteristics of CNTs were dependent on their diameter.
作者 李世鸿 张永平 李丽英
机构地区 大叶大学电机工程学系
出处 《新型炭材料》 SCIE EI CAS CSCD 北大核心 2011年第6期401-407,共7页 New Carbon Materials
关键词 热化学气相沉积 硅纳米丝 碳纳米管 场发射 Thermal chemical vapor deposition Silicon nanowires Carbon nanotubes Field emission
分类号 TB383.1 [一般工业技术—材料科学与工程]
  • 相关文献

参考文献24

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二级参考文献24

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共引文献1

同被引文献45

  • 1牟燕妮,叶萍,张苏娟,陈泽学,张炜,陆治国.阴极氧化对逸出功的影响[J].光子学报,2012,41(11):1383-1386. 被引量：4
  • 2刘铁民,张广成,陈挺,史学涛.泡沫塑料高性能化研究进展[J].工程塑料应用,2006,34(1):61-65. 被引量：37
  • 3赵宗彬,邱介山,王同华,李永峰,周颖.以煤为碳源直流电弧法制备单壁纳米碳管绳[J].新型炭材料,2006,21(1):19-23. 被引量：8
  • 4卢子兴,王仁,黄筑平,韩铭宝,田常津,李怀祥.泡沫塑料力学性能研究综述[J].力学进展,1996,26(3):306-323. 被引量：51
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  • 7PATIL S S, KOINKAR P M, DHOLE S D, et al. Influence of high-energy electron irradiation on field emission properties of multi-walled carbon nanotubes (MWCNTs) films[J]. Physica B: Condensed Matter, 2011, 406(9): 1809-1813.
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引证文献6

二级引证文献12

新型炭材料
2011年 第6期

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