Enhancement in the field emission behavior of graphene in N-2/O-2 high vacuum ambience
| Title | Enhancement in the field emission behavior of graphene in N-2/O-2 high vacuum ambience |
| Publication Type | Conference Paper |
| Year of Publication | 2014 |
| Authors | Suryawanshi, SR, Kolhe, PS, Gavhane, DS, Patil, SS, Chavan, PG, More, MA, Late, DJ |
| Editor | Tsujino, S, Gobrecht, J, Paraliev, M, Braun, HH, Groening, O, Feurer, T |
| Conference Name | 2014 27th International Vacuum Nanoelectronics Conference (IVNC) |
| Date Published | JUL |
| Publisher | IEEE, 345 E 47th ST, New York, NY 10017 USA |
| Conference Location | Engelberg, Switzerland |
| ISBN Number | 978-1-4799-5306-6 |
| Keywords | graphene, Pressure Dependent Field Emission |
| Abstract | Herein we report, pressure dependent field emission (FE) behaviour of a few-layer graphene emitter. Gas dependent FE properties have been investigated in ultra high vacuum (UHV), as well as in N-2 and O-2 ambience at base pressure similar to 1x10(-6) torr. Interestingly, the graphene emitter when operated in N-2/O-2 ambience exhibits lower turn-on field and higher emission current density, as compared to the UHV conditions. The emission current stability investigated at preset value of similar to 1 mu A over the period of more than 2 hrs is found better in the N2 ambience and is characterized by fewer fluctuations, in contrast to the behaviour in the O-2 ambience. The observed enhanced electron emission behavior in N-2/O-2 ambience is attributed to modulation of the work function of graphene emitter. |
| DOI | 10.1109/IVNC.2014.6894791 |
| Impact Factor (IF) |
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