Abstract
We investigated the field emission characteristics of patterned carbon nanotubes (CNTs) on KOVAR substrates with different surface morphologies. The substrate with a micro-sized random pattern was fabricated through chemical wet etching, whereas the substrate with a nano-sized random pattern was formed by surface roughening process of polymer and chemical wet etching. The field emission characteristics of these substrates were the compared with those of non-treated substrates. It was clearly revealed that the field emission characteristics of CNTs were influenced by the surface morphology of the cathode substrate. When the surface of cathode was modified by random pattern, the modified substrate provided a large surface area and a wider print area. Also, the modified surface morphology of the cathode provided strong adhesion between the CNT paste and the cathode. Particularly, the substrate with the nano-sized random pattern showed that the turn-on field value decreases and the field enhancement factor value improves as compared with non-treated substrate.
| Original language | English |
|---|---|
| Article number | 318 |
| Journal | Journal of Nanoparticle Research |
| Volume | 17 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2015 Jul 25 |
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Keywords
- Few-walled carbon nanotubes
- Field emission characteristics
- KOVAR
- Surface treatment
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Modelling and Simulation
- Chemistry(all)
- Materials Science(all)
- Bioengineering
Cite this
Carbon nanotube field emitters on KOVAR substrate modified by random pattern. / Park, Seol Ah; Song, Eun Ho; Kang, Byung Hyun; Ju, Byeong Kwon.
In: Journal of Nanoparticle Research, Vol. 17, No. 7, 318, 25.07.2015.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Carbon nanotube field emitters on KOVAR substrate modified by random pattern
AU - Park, Seol Ah
AU - Song, Eun Ho
AU - Kang, Byung Hyun
AU - Ju, Byeong Kwon
PY - 2015/7/25
Y1 - 2015/7/25
N2 - We investigated the field emission characteristics of patterned carbon nanotubes (CNTs) on KOVAR substrates with different surface morphologies. The substrate with a micro-sized random pattern was fabricated through chemical wet etching, whereas the substrate with a nano-sized random pattern was formed by surface roughening process of polymer and chemical wet etching. The field emission characteristics of these substrates were the compared with those of non-treated substrates. It was clearly revealed that the field emission characteristics of CNTs were influenced by the surface morphology of the cathode substrate. When the surface of cathode was modified by random pattern, the modified substrate provided a large surface area and a wider print area. Also, the modified surface morphology of the cathode provided strong adhesion between the CNT paste and the cathode. Particularly, the substrate with the nano-sized random pattern showed that the turn-on field value decreases and the field enhancement factor value improves as compared with non-treated substrate.
AB - We investigated the field emission characteristics of patterned carbon nanotubes (CNTs) on KOVAR substrates with different surface morphologies. The substrate with a micro-sized random pattern was fabricated through chemical wet etching, whereas the substrate with a nano-sized random pattern was formed by surface roughening process of polymer and chemical wet etching. The field emission characteristics of these substrates were the compared with those of non-treated substrates. It was clearly revealed that the field emission characteristics of CNTs were influenced by the surface morphology of the cathode substrate. When the surface of cathode was modified by random pattern, the modified substrate provided a large surface area and a wider print area. Also, the modified surface morphology of the cathode provided strong adhesion between the CNT paste and the cathode. Particularly, the substrate with the nano-sized random pattern showed that the turn-on field value decreases and the field enhancement factor value improves as compared with non-treated substrate.
KW - Few-walled carbon nanotubes
KW - Field emission characteristics
KW - KOVAR
KW - Surface treatment
UR - http://www.scopus.com/inward/record.url?scp=84937834372&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84937834372&partnerID=8YFLogxK
U2 - 10.1007/s11051-015-3120-4
DO - 10.1007/s11051-015-3120-4
M3 - Article
AN - SCOPUS:84937834372
VL - 17
JO - Journal of Nanoparticle Research
JF - Journal of Nanoparticle Research
SN - 1388-0764
IS - 7
M1 - 318
ER -