Field Electron Emission from Pyrograf Ш PR-1 Carbon Nanotube Fibers Embedded in Glass

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.