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Enhanced field emission property from hills-like and stars-like carbon nanotube films

  • Ting Chen
  • , Pingsheng Guo
  • , Lili Wang
  • , Tao Feng
  • , Zhuo Sun*
  • , Yiwei Chen
  • , Wenxiu Que
  • , Zhejuan Zhang
  • , Lifeng Lin
  • *此作品的通讯作者
  • East China Normal University

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Carbon nanotube (CNT) films with special surface morphology, such as hills-like and stars-like, were synthesized on silicon substrate and the field emission properties were examined. The nanotubes were fabricated by thermal chemical vapor deposition using co-sputtered NiTi alloy film as catalyst. The hills-like and stars-like CNT films showed good field emission properties of low turn-on electric field and large current density. The turn-on electric field values required to obtain a 10 μA /cm2 current density for hills-like and stars-like CNT films were determined at about 1.02 and 1.15 V/ μm, respectively. At an applied macroscopic field of 2. 4 V/μm, the current densities reached 4. 32 and 6. 88 mA/ cm2, respectively. The field enhancement factor β of hills-like and stars-like CNT films, calculated from the Fowler- Nordheim plots, were about 10 113 and 6 840. The good field-emission behavior is ascribed to the combined effects of the intrinsic field emission of CNT and the rough morphology of the film surface.

源语言英语
主期刊名AD'07 - Proceedings of Asia Display 2007
1773-1776
页数4
出版状态已出版 - 2007
活动Asia Display 2007, AD'07 - Shanghai, 中国
期限: 12 3月 200716 3月 2007

出版系列

姓名AD'07 - Proceedings of Asia Display 2007
2

会议

会议Asia Display 2007, AD'07
国家/地区中国
Shanghai
时期12/03/0716/03/07

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