In this article the authors present a study of the emitting behavior of carbon nanotube cathodes in a sphere-to-plane field emission diode. A capacitive technique is proposed for the measurement of the anode-cathode distance as well as an innovative analytical procedure for the evaluation of the emitting area. Both anode-cathode distance and emitting area are essential parameters for the analysis of field emission experiments, the interpretation of results, and the extraction of technologically relevant data. Such parameters allow them to find out the values of turn on fields, current density, and field enhancement factor through the measurement of the emitted current versus applied voltage. Emission tests on single wall carbon nanotube samples with different morphologies have been performed in order to test the procedures and to compare data relative to samples with different morphologies.
Boscoli, I., Cialdi, S., Fiori, A., Orlanducci, S., Sessa, V., TERRANOVA PERSICHELLI, M.l., et al. (2007). Evaluation of the emitting area and anode-cathode distance in F.E experiments from sw-nanotubes. JOURNAL OF VACUUM SCIENCE & TECHNOLOGY. B, 25, 1253-1261 [10.1116/1.2749524].
Evaluation of the emitting area and anode-cathode distance in F.E experiments from sw-nanotubes
ORLANDUCCI, SILVIA;SESSA, VITO;TERRANOVA PERSICHELLI, MARIA LETIZIA;
2007-01-01
Abstract
In this article the authors present a study of the emitting behavior of carbon nanotube cathodes in a sphere-to-plane field emission diode. A capacitive technique is proposed for the measurement of the anode-cathode distance as well as an innovative analytical procedure for the evaluation of the emitting area. Both anode-cathode distance and emitting area are essential parameters for the analysis of field emission experiments, the interpretation of results, and the extraction of technologically relevant data. Such parameters allow them to find out the values of turn on fields, current density, and field enhancement factor through the measurement of the emitted current versus applied voltage. Emission tests on single wall carbon nanotube samples with different morphologies have been performed in order to test the procedures and to compare data relative to samples with different morphologies.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.