Izvorni znanstveni članak
Stable Field Emission from Layered MoS2 Nanosheets in High Vacuum and Observation of 1/f Noise
Ranjit V. Kashid
; Centre for Advanced Studies in Materials Science and Condensed Matter Physics, Department of Physics, University of Pune, Pune, India
Pracheetee D. Joag
; Maharashtra Institute of Technology, College of Engineering, Pune, India
M. Thripuranthaka
; Physical and Materials Chemistry Division, National Chemistry Laboratory (CSIR), Pune, India
Chandra S. Rout
; School of Basic Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar, India
Dattatray J. Late
; Physical and Materials Chemistry Division, National Chemistry Laboratory (CSIR), Pune, India
Mahendra A. More
; Centre for Advanced Studies in Materials Science and Condensed Matter Physics, Department of Physics, University of Pune, Pune, India
Sažetak
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 desorption processes. The post-field-emission results indicate the MoS2 nanosheets are a robust field emitter in high-vacuum conditions.
Ključne riječi
layered materials; MoS2; electron emission; noise measurement; Raman spectroscopy
Hrčak ID:
142451
URI
Datum izdavanja:
1.1.2015.
Posjeta: 766 *