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首页> 外文期刊>Japanese journal of applied physics.Part 1.Regular papers & short notes >Improvement in Field Electron Emission Performance of Natural-Precursor-Grown Carbon Nanofibers by Thermal Annealing in Argon Atmosphere
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Improvement in Field Electron Emission Performance of Natural-Precursor-Grown Carbon Nanofibers by Thermal Annealing in Argon Atmosphere

机译：通过氩气气氛热退火改善天然前体生长碳纳米纤维的场电子发射性能

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摘要

Carbon nanofibers (CNFs) were grown on a graphite substrate by the spray pyrolysis of a botanical hydrocarbon, turpentine oil, using ferrocene as the catalyst and sulfur as the promoter. The as-grown CNFs were annealed at 450℃ for 30 min in an air, and then at 1800℃ in an argon atmosphere for 2h. The annealed CNFs have better degree of crystallinity and reduced number of defects compared with the as-grown CNFs confirmed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman spectroscopy, and thermogravimetric analysis. The as-grown and annealed CNFs were found to be effective electron emitters with turn-on fields of 3.2 and 2.1 V/μm, respectively. The improvement in field emission (FE) performance can be explained in terms of the higher degree of graphitization of the CNFs after thermal annealing. This improved FE performance of the natural precursor grown CNFs was comparable to the FE performance level attainable for the conventional carbon nanomaterials grown using petroleum products. Thus, it was considered that the use of petroleum products could be avoidable for CNF growth and that CNFs grown using ecofriendly materials are very promising for the application in future field emission displays (FEDs).
机译：碳纳米纤维（CNF）使用二茂铁作为催化剂，硫磺作为促进剂，通过喷雾热解植物性烃，松节油而在石墨基底上生长。将生长的CNF在空气中于450℃退火30分钟，然后在氩气中于1800℃退火2h。与通过扫描电子显微镜（SEM），透射电子显微镜（TEM），拉曼光谱和热重分析确定的生长态CNF相比，退火后的CNF具有更好的结晶度和减少的缺陷数。发现生长和退火的CNF分别是有效的电子发射器，其导通场分别为3.2和2.1 V /μm。场发射（FE）性能的改善可以用热退火后CNF的更高石墨化程度来解释。天然前体生长的CNF的改进的FE性能与使用石油产品生长的常规碳纳米材料可达到的FE性能水平相当。因此，认为可以避免使用石油产品来促进CNF的生长，并且使用环保材料生长的CNF对于未来的场发射显示器（FED）的应用非常有希望。

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  • 来源
    《Japanese journal of applied physics.Part 1.Regular papers & short notes》 |2011年第1issue2期|p.01AF09.1-01AF09.4|共4页
  • 作者

    Pradip Ghosh; Mohd Zamri; Debasish Ghosh; Tetsuo Soga; Takashi Jimbo; Shinobu Hashimoto; Shuho Ohashi; Masaki Tanemura;

  • 作者单位

    Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology,Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya Institute of Technology,Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

    Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan;

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