Premium
Metallic Few‐Layer Flowerlike VS 2 Nanosheets as Field Emitters
Author(s) -
Rout Chandra Sekhar,
Khare Ruchita,
Kashid Ranjit V.,
Joag Dilip S.,
More Mahendra A.,
Lanzillo Nicholas A.,
Washington Morris,
Nayak Saroj K.,
Late Dattatray J.
Publication year - 2014
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201402448
Subject(s) - field electron emission , work function , common emitter , chemistry , hydrothermal circulation , field (mathematics) , layer (electronics) , current density , metal , nanotechnology , analytical chemistry (journal) , optoelectronics , chemical engineering , materials science , physics , mathematics , organic chemistry , quantum mechanics , chromatography , pure mathematics , engineering , electron
We report first‐principles DFT calculations of the single‐layer VS 2 work function, the experimental synthesis of flower‐like few‐layer‐thick VS 2 nanosheets by a simple one‐step hydrothermal method, and the investigation of their field emission properties. The turn‐on field required to draw emission current densities of 1 and 10 μA/cm 2 were 4 and 5.01 V/μm, respectively. The observed turn‐on field values are attributed to the high field enhancement factor (ca. 2500), which is due to presence of sharp protrusions in the VS 2 nanosheets. Furthermore, the field‐emission current stability of the VS 2 emitter shows stable behavior over a period of 12 h. Further, DFT calculations show that the work function ( f ) of the single‐layer VS 2 emitter is 6.01 eV.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom