Issue 7, 2012
From the journal:

RSC Advances

Carbon nanotube mat as substrate for ZnO nanotip field emitters†

R. P. Sugavaneshwar,a   T. Nagaob  and  K. K. Nanda*a  

* Corresponding authors

a Materials Research Centre, Indian Institute of Science, Bangalore, 12 India
E-mail: suga@mrc.iisc.ernet.in; nanda@mrc.iisc.ernet.in
Fax: +91-80-23607316
Tel: +91-80-2293 2996

b International Centre for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki, Japan
E-mail: taadaki.NAGAO@nims.go.jp

Abstract

We have reported the synthesis of ZnO nanotips on a multi walled carbon nanotube (MWCNT) mat by a vapour transport process. This combination of ZnO nanotips and a MWCNT mat exhibit ideal field emission behaviour. The turn on field and threshold field is found to be 0.34 and 1.5 V μm−1, respectively. The low threshold field is due to the good adherence of the ZnO nanotips on the MWCNT mat. The field enhancement factor is found to be 5 × 102 which is in agreement with the intrinsic field emission factor of ZnO nanotips. The emission current is found to be highly stable even at moderate vacuum.

Graphical abstract: Carbon nanotube mat as substrate for ZnO nanotip field emitters

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Article information

DOI
https://doi.org/10.1039/C2RA00001F
Article type
Communication
Submitted
02 Jan 2012
Accepted
28 Jan 2012
First published
31 Jan 2012

RSC Adv., 2012,2, 2713-2716

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Carbon nanotube mat as substrate for ZnO nanotip field emitters

R. P. Sugavaneshwar, T. Nagao and K. K. Nanda, RSC Adv., 2012, 2, 2713 DOI: 10.1039/C2RA00001F

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