Title :
Graphite coated CNTs for high current electron emission devices
Author :
Su Woong Lee ; Woo Mi Bae ; An Na Ha ; Eun Hye Lee ; Hee Chul Woo ; Young Ju Eom ; Jin Jang ; Kyu Chang Park ; Park, K.S. ; Kim, Chang Duk
Author_Institution :
Dept. of Inf. Display, Kyung Hee Univ., Seoul, South Korea
Abstract :
We studied the effect of resin treatment of carbon nanotubes (CNTs) on field emission from carbon nanotube electron emitter arrays grown using the resist-assisted patterning (RAP) process. The electron emission current and stability of emission current of graphite coated CNTs were remarkably improved. We measured about 10 times increase of field emission current and better emission stability with graphite coated CNTs. The emission current densities of as grown CNT emitter arrays and those which were later processed by resin treatment, were 1.9 mA/cm2 and 20.2 mA/cm2, respectively, when measured at an anode field of 8.0 V/μm. The enhancement in electron emission of CNTs after resin treatment appears to be due to the effect of graphitization between the substrate and CNTs. Such graphitization increases the adhesion between the substrate and CNTs and increases the thermal dispersion property caused by high electron emission current.
Keywords :
carbon nanotubes; current density; field emitter arrays; graphite; resins; C; RAP process; adhesion; anode field; carbon nanotube; electron emission stability; electron emitter array; field emission current density; graphite coated CNT; graphitization; high current electron emission device; high electron emission current; resin treatment; resist-assisted patterning; substrate; thermal dispersion property; Carbon nanotubes; Coatings; Current density; Electron emission; Resins; Substrates; carbon nanotubes; electron emission; graphitization; resin treatment;
Conference_Titel :
Vacuum Nanoelectronics Conference (IVNC), 2011 24th International
Conference_Location :
Wuppertal
Print_ISBN :
978-1-4577-1243-2
Electronic_ISBN :
pending
