Enhanced field emission behavior of layered MoSe2

TitleEnhanced field emission behavior of layered MoSe2
Publication TypeJournal Article
Year of Publication2016
AuthorsSuryawanshi, SR, Pawbake, AS, Pawar, MS, Jadkar, SR, More, MA, Late, DJ
JournalMaterials Research Express
Volume3
Issue3
PaginationArticle Number: 035003
Date PublishedMAR
ISSN2053-1591
Keywordsatomically thin nanosheets, chemical vapor deposition, field emission, layered MoSe2
Abstract

Herein, we report one step facile chemical vapor deposition method for synthesis of single-layer MoSe2 nanosheets with average lateral dimension similar to 60 mu m on 300 nm SiO2/Si and n-type silicon substrates and field emission investigation of MoSe2/Si at the base pressure of similar to 1 x 10(-8) mbar. The morphological and structural analyses of the as-deposited single-layer MoSe2 nanosheets were carried out using an optical microscopy, Raman spectroscopy and atomic force microscopy. Furthermore, the values of turn-on and threshold fields required to extract an emission current densities of 1 and 10 mu A cm(-2), are found to be similar to 1.9 and similar to 2.3 V mu m(-1), respectively. Interestingly, the MoSe2 nanosheet emitter delivers maximum field emission current density of similar to 1.5 mA cm(-2) at a relatively lower applied electric field of similar to 3.9 V mu m(-1). The long term operational current stability recorded at the preset values of 35 mu A over 3 hr duration and is found to be very good. The observed results demonstrates that the layered MoSe2 nanosheet based field emitter can open up many opportunities for their potential application as an electron source in flat panel display, transmission electron microscope, and x-ray generation. Thus, the facile one step synthesis approach and robust nature of single-layer MoSe2 nanosheets emitter can provide prospects for the future development of practical electron sources.

DOI10.1088/2053-1591/3/3/035003
Type of Journal (Indian or Foreign)

Foreign

Impact Factor (IF)0.968
Divison category: 
Physical and Materials Chemistry