Content area
Abstract
In this study, we have investigated electron field emission (EFE) characteristics of Q-carbon at room temperature and above. At room temperature the Q-carbon requires only ~2.4 V/μm electric field to turn-on the EFE. The EFE properties of the Q-carbon composite structure improve with temperature by lowering the turn-on field and increasing the current density. At 500 K we observed a turn-on field of ~2.34 V/μm, and a maximum current density was found to be ~53 µA/cm2 at 2.66 V/μm. The Q-carbon field emitters also show very stable EFE characteristics (within 7% fluctuations) over time for current intensities between 7.5 and 47 µA/cm2.
Details
Title
Stability of electron field emission in Q-carbon
Author
Haque, Ariful 1 ; Narayan, Jagdish 1
1 Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695.7916, USA
1 Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695.7916, USA
Pages
1343-1351
Section
Research Letters
Publication year
2018
Publication date
Sep 2018
ISSN
21596859
e-ISSN
21596867
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2115562188
Copyright
Copyright © Materials Research Society 2018