The density distribution of CNTs is one of the crucial parameters determing the field-emission property of CNTs. To effectively control the density of CNTs, an inactive thin-film layer was deposited on a catalyst. The results showed that improved field emission property could be obtained with a thin SiO layer on the catalyst layer as the precursor. For 3.5 nm Fe and 3.5 nm SiO on 3.5 nm Fe as a catalyst, the turn-on field could be decreased from 3.7V/μm. to 2.2 V/μm and the field-emission current density increased from 2.6 × 10-8 A/cm2 to 2.4 × 10-4 A/cm 2 when the applied field was 4 V/μm.
|Number of pages||6|
|Journal||Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers|
|Issue number||1 A|
|State||Published - 1 Jan 2005|
- Carbon nanotubes
- Density control of CNTs
- Inactive thin-film layer