Effects of O2, Ar, and H2 gases on the field-emission properties of single-walled and multiwalled carbon nanotubes

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In this article, the authors compare the effects of O2, Ar, and H2 gases on the field-emission (FE) properties of single-walled carbon nanotubes (SWNTs) and multiwalled carbon nanotubes (MWNTs).

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3 p.

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Wadhawan, Atul; Stallcup, Richard E.; Stephens, Kenneth F.; Pérez, José M. & Akwani, Ikerionwu A. September 17, 2001.

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In this article, the authors compare the effects of O2, Ar, and H2 gases on the field-emission (FE) properties of single-walled carbon nanotubes (SWNTs) and multiwalled carbon nanotubes (MWNTs).

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3 p.

Notes

Copyright 2001 American Institute of Physics. Applied Physics Letters, 79:12, http://apl.aip.org/resource/1/applab/v79/i12/p1867_s1

Abstract: We compare the effects of O₂, Ar, and H₂ gases on the field-emission (FE) properties of single-walled carbon nanotubes (SWNTs) and multiwalled carbon nanotubes (MWNTs). We find that H₂ and Ar gases do not significantly affect the FE properties of SWNTs or MWNTs. O₂ temporarily reduces the FE current and increases the turn-on voltage of SWNTs. Full recovery of these properties occurs after operation in UHV. The higher operating voltages in an O₂ environment cause a permanent decrease of the FE current and an increase in the turn-on field of MWNTs. The ratios of the slopes before and after O₂ exposure are approximately 1.04 and 0.82 for SWNTs and MWNTs, respectively.

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  • Applied Physics Letters, 2001, College Park: American Institute of Physics, pp. 1867-1869

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  • Publication Title: Applied Physics Letters
  • Volume: 79
  • Issue: 12
  • Page Start: 1867
  • Page End: 1869
  • Pages: 3
  • Peer Reviewed: Yes

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  • September 17, 2001

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  • May 4, 2012, 10:15 a.m.

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Wadhawan, Atul; Stallcup, Richard E.; Stephens, Kenneth F.; Pérez, José M. & Akwani, Ikerionwu A. Effects of O2, Ar, and H2 gases on the field-emission properties of single-walled and multiwalled carbon nanotubes, article, September 17, 2001; [College Park, Maryland]. (digital.library.unt.edu/ark:/67531/metadc84150/: accessed August 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT College of Arts and Sciences.