Abstract
Field emission results from a new form of carbon thin film are reported. The films contain carbon nanoparticles (nanotubes, "onions" and "eggs") within an amorphous carbon matrix and are deposited using a carbon arc with a localized high-pressure gas region of He of N2. The films formed in an N2 environment have a nitrogenated amorphous carbon (a-C:N) matrix and show clear Fowler-Nordheim-type metallic field emission characteristics. The field emission is very similar to that obtained from pure, randomly oriented multi-wall and single-wall nanotube films. It is proposed that the new a-C:N/nanoparticle films emit electrons through conducting channels formed in the film, subsurface field emission into the a-C:N matrix and hot electron surmounting of the surface potential barrier between the a-C:N and vacuum. Field enhancement factors of over 1000 are calculated for the thin film emitters when the nanoparticle work function is taken as 5 eV. This class of a-C:N/ nanoparticle film has the potential to be a thin film equivalent to carbon nanotubes in terms of field emission.
| Original language | English |
|---|---|
| Pages (from-to) | 31-51 |
| Number of pages | 21 |
| Journal | New Diamond and Frontier Carbon Technology |
| Volume | 9 |
| Issue number | 1 |
| Publication status | Published - 1999 |
Fingerprint
Keywords
- a-C
- a-C:N
- Field emission
- Nanotubes
ASJC Scopus subject areas
- Materials Science(all)
- Surfaces, Coatings and Films
- Surfaces and Interfaces
Cite this
Field Emission from a New Form of Thin Film Amorphous Carbon Having Nanoparticle Inclusions and Carbon Nanotubes. / Amaratunga, Gehan A J; Baxendale, Mark; Rupesinghe, Nalin; Alexandrou, Ioannis; Chhowalla, Manish; Butler, Tim; Munindradasa, Amith; Kiley, Chris J.; Zhang, Li; Sakai, Tadashi.
In: New Diamond and Frontier Carbon Technology, Vol. 9, No. 1, 1999, p. 31-51.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Field Emission from a New Form of Thin Film Amorphous Carbon Having Nanoparticle Inclusions and Carbon Nanotubes
AU - Amaratunga, Gehan A J
AU - Baxendale, Mark
AU - Rupesinghe, Nalin
AU - Alexandrou, Ioannis
AU - Chhowalla, Manish
AU - Butler, Tim
AU - Munindradasa, Amith
AU - Kiley, Chris J.
AU - Zhang, Li
AU - Sakai, Tadashi
PY - 1999
Y1 - 1999
N2 - Field emission results from a new form of carbon thin film are reported. The films contain carbon nanoparticles (nanotubes, "onions" and "eggs") within an amorphous carbon matrix and are deposited using a carbon arc with a localized high-pressure gas region of He of N2. The films formed in an N2 environment have a nitrogenated amorphous carbon (a-C:N) matrix and show clear Fowler-Nordheim-type metallic field emission characteristics. The field emission is very similar to that obtained from pure, randomly oriented multi-wall and single-wall nanotube films. It is proposed that the new a-C:N/nanoparticle films emit electrons through conducting channels formed in the film, subsurface field emission into the a-C:N matrix and hot electron surmounting of the surface potential barrier between the a-C:N and vacuum. Field enhancement factors of over 1000 are calculated for the thin film emitters when the nanoparticle work function is taken as 5 eV. This class of a-C:N/ nanoparticle film has the potential to be a thin film equivalent to carbon nanotubes in terms of field emission.
AB - Field emission results from a new form of carbon thin film are reported. The films contain carbon nanoparticles (nanotubes, "onions" and "eggs") within an amorphous carbon matrix and are deposited using a carbon arc with a localized high-pressure gas region of He of N2. The films formed in an N2 environment have a nitrogenated amorphous carbon (a-C:N) matrix and show clear Fowler-Nordheim-type metallic field emission characteristics. The field emission is very similar to that obtained from pure, randomly oriented multi-wall and single-wall nanotube films. It is proposed that the new a-C:N/nanoparticle films emit electrons through conducting channels formed in the film, subsurface field emission into the a-C:N matrix and hot electron surmounting of the surface potential barrier between the a-C:N and vacuum. Field enhancement factors of over 1000 are calculated for the thin film emitters when the nanoparticle work function is taken as 5 eV. This class of a-C:N/ nanoparticle film has the potential to be a thin film equivalent to carbon nanotubes in terms of field emission.
KW - a-C
KW - a-C:N
KW - Field emission
KW - Nanotubes
UR - http://www.scopus.com/inward/record.url?scp=0033268067&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0033268067&partnerID=8YFLogxK
M3 - Article
VL - 9
SP - 31
EP - 51
JO - New Diamond and Frontier Carbon Technology
JF - New Diamond and Frontier Carbon Technology
SN - 1344-9931
IS - 1
ER -