期刊
SMALL
卷 9, 期 16, 页码 2730-2734出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.201300002
关键词
layered materials; MoS2; field emission; field enhancement factors
类别
资金
- Indo-US Science & Technology Forum (IUSSTF)
- CSIR (Government of India)
- CSIR for the Emeritus Scientist Scheme
Field emission studies are reported for the first time on layered MoS2 sheets at the base pressure of approximate to 1 x 10(-8) mbar. The turn-on field required to draw a field emission current density of 10 A/cm(2) is found to be 3.5 V/m for MoS2 sheets. The turn-on values are found to be significantly lower than the reported MoS2 nanoflowers, graphene, and carbon nanotube-based field emitters due to the high field enhancement factor (approximate to 1138) associated with nanometric sharp edges of MoS2 sheet emitter surface. The emission current-time plots show good stability over a period of 3 h. Owing to the low turn-on field and planar (sheetlike) structure, the MoS2 could be utilized for future vacuum microelectronics/nanoelectronic and flat panel display applications.
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