期刊
APPLIED SURFACE SCIENCE
卷 418, 期 -, 页码 270-274出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.02.177
关键词
Field emission; Nanosheets; NiMoO4; Current stability
类别
资金
- DST (Government of India) [SR/S2/RJN-21/2012, SR/S2/RJN-130/2012]
- DST-SERB [SB/FTP/PS-065/2013, SB/FT/CS-116/2013]
- UGC-UKIERI [UGC-2013-14/005]
- BRNS-DAE [37(3)/14/48/2014-BRNS/1502]
- Indo-US Science and Technology Forum (IUSSTF) through a joint INDO-US centre grant
- Ministry of Human Resources Development (MHRD), India
- NCL-MLP Project [028626]
- BRNS [34/14/20/2015]
- INUP IITB project - DeitY, MCIT, Government of India
In this paper we report, large scale synthesis of a and beta-NiMoO4 by a facile hydrothermal method and we observed that urea plays important role on the growth of beta-NiMoO4 nanosheets. We have also carried out field emission (FE) investigations of alpha and beta-NiMoO4 at a base pressure of similar to 1 x 10(-8) mbar. The obtained turn-on field at emission current density of 1 mu A/cm(2) for beta-NiMoO4 nanosheets and alpha-NiMoO4 is 1.3V/mu m and 2.2V/mu m respectively were observed. The maximum field emission current density of 1.006 mA/cm(2) at an applied electric field of 2.7V/mu m was achieved for beta-NiMoO4 nanosheets. Furthermore, we found that the beta-NiMoO4 nanosheets possess good field emission performance compared to alpha-NiMoO4. The results indicate that NiMoO4 can be used as a promising material in FE applications with possibility of tuning field emission performance by controlling the phase. (C) 2017 Elsevier B.V. All rights reserved.
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