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

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

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.

Original languageEnglish
Title of host publicationAD'07 - Proceedings of Asia Display 2007
Pages1773-1776
Number of pages4
StatePublished - 2007
EventAsia Display 2007, AD'07 - Shanghai, China
Duration: 12 Mar 200716 Mar 2007

Publication series

NameAD'07 - Proceedings of Asia Display 2007
Volume2

Conference

ConferenceAsia Display 2007, AD'07
Country/TerritoryChina
CityShanghai
Period12/03/0716/03/07

Keywords

  • Carbon nanotubes (CNTs)
  • Field emission
  • Hills-like
  • Stars-like

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