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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Main Authors: | , , , , , |
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Format: | Article |
Language: | English |
Published: |
Wiley
2015-04-01
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Series: | Nanomaterials and Nanotechnology |
Subjects: | |
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. |
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ISSN: | 1847-9804 |