Enhanced field emission from ZnO nanoneedles on chemical vapour deposited diamond films

被引：9
|
作者：
Marathe, Sonali [2 ]
Koinkar, Pankaj [2 ]
Ashtaputre, Shriwas [2 ]
Sathe, Vasant [3 ]
More, M. A. [2 ]
Kulkarni, S. K. [1 ]
机构：
[1] Indian Inst Sci Educ & Res, Pune 411021, Maharashtra, India
[2] Univ Pune, DST Unit Nanosci, Dept Phys, Pune 411007, Maharashtra, India
[3] Consortium Sci Res, Indore Ctr, Indore, Madhya Pradesh, India
来源：
THIN SOLID FILMS | 2010年 / 518卷 / 14期
关键词：
Field emission; Zinc oxide; Diamond thin film; Field-enhancement factor; X-ray photoelectron spectroscopy; Raman spectroscopy; Chemical deposition; ELECTRON-EMISSION; AMORPHOUS-CARBON; THIN-FILMS; NANOWIRES; PERFORMANCE; MECHANISMS; GROWTH;
D O I：
10.1016/j.tsf.2009.10.118
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZnO nanoneedles were coated on hot filament chemical vapour deposited diamond thin films to enhance the field emission properties of ZnO nanoneedles. The virgin diamond films and ZnO nanoneedles on diamond films were characterized using scanning electron microscopy. X-ray photoelectron spectroscopy and Raman spectroscopy. The field emission studies reveal that the ZnO nanoneedles coated on diamond film exhibit better emission characteristics, with minimum threshold field (required to draw a current density similar to 1 mu A/cm(2)) as compared to ZnO needles on silicon and virgin diamond films. The better emission characteristic of ZnO nanoneedles on diamond film is attributed to the high field-enhancement factor resulting due to the combined effect of the ZnO nanoneedles and diamond film. (C) 2009 Published by Elsevier B.V.
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页码：3743 / 3747
页数：5
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