Review Article
An Overview on Structure and Field Emission Properties of Carbon Nitride Films
Table 3
Appropriate size of sp2 clusters.
| | | Size of clusters (nm) | Preparation method | Turn-on electric field ()/threshold field () | Current density | Reference |
| | Ta-C (annealed in nitrogen and acetylene ambient) | 2 | Filtered cathodic vacuum arc technique | 4.8 V/m (1 A/cm2) | — | [50] | | N-PPANI | 2.2 | Pyrolysis of polyaniline | 1.7 V/m (10 A/cm2) | — | [59] | | 1.8–2.4 | Magnetron sputtering of carbon target | 4.0 V/μm (1 A/cm2) | 10 A/cm2 (11.0 V/μm) | [56] |
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