Open AccessStable Field Emission from Layered MoS2 Nanosheets in High Vacuum and Observation of 1/f Noise
Author(s) -
Ranjit V. Kashid,
Pracheetee D. Joag,
M. Thripuranthaka,
Chandra Sekhar Rout,
Dattatray J. Late,
Mahendra A. More
Publication year - 2015
Publication title -
nanomaterials and nanotechnology.
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.412
H-Index - 21
ISSN - 1847-9804
DOI - 10.5772/60071
Subject(s) - field electron emission , ultra high vacuum , materials science , common emitter , field (mathematics) , desorption , noise (video) , electron , optoelectronics , analytical chemistry (journal) , nanotechnology , adsorption , physics , chemistry , mathematics , quantum mechanics , chromatography , artificial intelligence , computer science , pure mathematics , organic chemistry , image (mathematics)
Field emission and current noise of hydrothermally synthesized MoS2 nanosheets are investigated in ultra-high-vacuum and industrially suited high-vacuum conditions. The study reveals that the emission turn-on field is pressure dependent. Moreover, the MoS2 nano‐sheets exhibit more stable field-electron emission in high- vacuum than in ultra-high-vacuum conditions. The investigations on field-emission current fluctuations show features of 1/f-type noise in ultra-high-vacuum and high-vacuum conditions, attributed to adsorption and desorption processes. The post-field-emission results indicate the MoS2 nanosheets are a robust field emitter in high-vacuum conditions