Field electron emission from pyrograf Ш PR-1 carbon nanotube fibers embedded in glass

الملخص EN

This study investigates the field electron emission properties of Pyrograf-Ш carbon nanotube fibers (CNTFs).

Field emitters were manufactured by employing a drawing technique using a glass puller.

A field electron microscope with a tip (cathode) to screen (anode) separation of approximately 10 mm was used to characterize the emitters.

The current-voltage (I-V) characteristics of the CNTFs showed a shallow increase in the emitted current with increasing applied voltage, until a threshold voltage (VTH) is reached, after which a “switch-on” phenomenon occurs.

The I-V characteristics are then linear.

Fowler-Nordheim plots and field electron emission patterns are also discussed and it is shown that it is possible to get a single bright emission spot.