Stable Field Emission from Layered MoS2 Nanosheets in High Vacuum and Observation of 1/f Noise

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-ele...

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Bibliographic Details
Main Authors: Ranjit V. Kashid, Pracheetee D. Joag, M. Thripuranthaka, Chandra S. Rout, Dattatray J. Late, Mahendra A. More
Format: Article
Language:English
Published: Wiley 2015-04-01
Series:Nanomaterials and Nanotechnology
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Online Access:http://www.intechopen.com/journals/nanomaterials_and_nanotechnology/stable-field-emission-from-layered-mos2-nanosheets-in-high-vacuum-and-observation-of-1-f-noise
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Summary: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 desorp‐ tion processes. The post-field-emission results indicate the MoS2 nanosheets are a robust field emitter in high- vacuum conditions.
ISSN:1847-9804