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Title: Photo-enhanced field emission characteristics of SnS{sub 2} nanosheets

In the present studies, we demonstrate a facile hydrothermal route to synthesize elegant SnS{sub 2} nanosheets. The x-ray diffraction pattern clearly revealed formation of SnS{sub 2} phase under the hydrothermal conditions. SEM and TEM analysis indicated formation of very thin SnS{sub 2} nanosheets. Field electron emission studies of the SnS{sub 2} nanosheets emitter were preformed at base pressure of 1×10{sup −8} mbar. The value of turn-on field, corresponding to an emission current density of ∼1 μA/ cm2, was found to be ∼ 4.6 V/μm. Interestingly, when the cathode was illuminated with visible light, it exhibited lower turn-on field of ∼ 4.2 V/μm, along with nearly 2.5 times enhancement in the emission current. Furthermore, the photo-enhanced emission characteristic shows a reproducible switching behavior. The photo-enhanced filed emission characteristics along with reproducible switching behaviour propose the SnS{sub 2} nanosheets emitter as a promising candidate for nano-optoelectronic devices.
Authors:
;  [1] ; ; ;  [2]
  1. Center for Advanced Studies in Materials Science and Condensed Matter Physics, Department of Physics, University of Pune, Pune - 411007 (India)
  2. Physical and Materials Chemistry Division, National Chemical Laboratory, Pune - 411008 (India)
Publication Date:
OSTI Identifier:
22269456
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1591; Journal Issue: 1; Conference: 58. DAE solid state physics symposium 2013, Patiala, Punjab (India), 17-21 Dec 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; CURRENT DENSITY; ELECTRIC CURRENTS; ELECTRON EMISSION; FIELD EMISSION; NANOSTRUCTURES; SCANNING ELECTRON MICROSCOPY; SHEETS; TIN SULFIDES; TRANSMISSION ELECTRON MICROSCOPY; X-RAY DIFFRACTION