Model Calculation for the Field Enhancement Factor of Carbon Nanowall Array
Summary :
To estimate the field emission current associated with an array of carbon nanowalls (CNWs), the model of the floating rods between anode and cathode plates was proposed. An approximate formula for the enhancement factor was derived, showing that the interwall distance of the CNW array critically affects the field emission. The field enhancement factor was almost one order of magnitude less than that of vertically aligned CNTs. Considering the field emission current density, the field emission can be optimized when the interwall distance is comparable with the wall height. For same separation distance, the macroscopic field strength of the CNW array is almost one order of magnitude higher than that of vertical CNT array to obtain the emission current of 1 mA from the cathode surface of 1 cm2.
- Publication
- IEICE TRANSACTIONS on Electronics Vol.E94-C No.12 pp.1867-1871
- Publication Date
- 2011/12/01
- Publicized
- Online ISSN
- 1745-1353
- DOI
- 10.1587/transele.E94.C.1867
- Type of Manuscript
- Special Section PAPER (Special Section on Recent Progress in Organoelectronic Materials and Their Applications for Nanotechnology)
- Category
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Tomohiko YAMAKAMI, Masahiro YAMASHITA, Rinpei HAYASHIBE, Kiichi KAMIMURA, "Model Calculation for the Field Enhancement Factor of Carbon Nanowall Array" in IEICE TRANSACTIONS on Electronics,
vol. E94-C, no. 12, pp. 1867-1871, December 2011, doi: 10.1587/transele.E94.C.1867.
Abstract: To estimate the field emission current associated with an array of carbon nanowalls (CNWs), the model of the floating rods between anode and cathode plates was proposed. An approximate formula for the enhancement factor was derived, showing that the interwall distance of the CNW array critically affects the field emission. The field enhancement factor was almost one order of magnitude less than that of vertically aligned CNTs. Considering the field emission current density, the field emission can be optimized when the interwall distance is comparable with the wall height. For same separation distance, the macroscopic field strength of the CNW array is almost one order of magnitude higher than that of vertical CNT array to obtain the emission current of 1 mA from the cathode surface of 1 cm2.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/transele.E94.C.1867/_p
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@ARTICLE{e94-c_12_1867,
author={Tomohiko YAMAKAMI, Masahiro YAMASHITA, Rinpei HAYASHIBE, Kiichi KAMIMURA, },
journal={IEICE TRANSACTIONS on Electronics},
title={Model Calculation for the Field Enhancement Factor of Carbon Nanowall Array},
year={2011},
volume={E94-C},
number={12},
pages={1867-1871},
abstract={To estimate the field emission current associated with an array of carbon nanowalls (CNWs), the model of the floating rods between anode and cathode plates was proposed. An approximate formula for the enhancement factor was derived, showing that the interwall distance of the CNW array critically affects the field emission. The field enhancement factor was almost one order of magnitude less than that of vertically aligned CNTs. Considering the field emission current density, the field emission can be optimized when the interwall distance is comparable with the wall height. For same separation distance, the macroscopic field strength of the CNW array is almost one order of magnitude higher than that of vertical CNT array to obtain the emission current of 1 mA from the cathode surface of 1 cm2.},
keywords={},
doi={10.1587/transele.E94.C.1867},
ISSN={1745-1353},
month={December},}
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TY - JOUR
TI - Model Calculation for the Field Enhancement Factor of Carbon Nanowall Array
T2 - IEICE TRANSACTIONS on Electronics
SP - 1867
EP - 1871
AU - Tomohiko YAMAKAMI
AU - Masahiro YAMASHITA
AU - Rinpei HAYASHIBE
AU - Kiichi KAMIMURA
PY - 2011
DO - 10.1587/transele.E94.C.1867
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E94-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2011
AB - To estimate the field emission current associated with an array of carbon nanowalls (CNWs), the model of the floating rods between anode and cathode plates was proposed. An approximate formula for the enhancement factor was derived, showing that the interwall distance of the CNW array critically affects the field emission. The field enhancement factor was almost one order of magnitude less than that of vertically aligned CNTs. Considering the field emission current density, the field emission can be optimized when the interwall distance is comparable with the wall height. For same separation distance, the macroscopic field strength of the CNW array is almost one order of magnitude higher than that of vertical CNT array to obtain the emission current of 1 mA from the cathode surface of 1 cm2.
ER -
English
