共 46 条
Growth of Na0.3WO3 nanorods for the field emission application
被引:18
作者:
Azimirad, Rouhollah
[2
]
Khademi, Ali
[1
]
Akhavan, Omid
[1
]
Moshfegh, Alireza Z.
[1
,3
]
机构:
[1] Sharif Univ Technol, Dept Phys, Tehran, Iran
[2] Malek Ashtar Univ Technol, Inst Phys, Tehran, Iran
[3] Sharif Univ Technol, Inst Nanosci & Nanotechnol, Tehran, Iran
关键词:
TUNGSTEN-OXIDE NANOWIRES;
ELECTRON-EMISSION;
ARRAYS;
PERFORMANCE;
NANOTUBE;
D O I:
10.1088/0022-3727/42/20/205405
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
Na0.3WO3 1D nanostructure forms (nanorods and nanobelts) were grown by a solid-liquid-solid mechanism from a 40 nm sputtered tungsten film deposited on a soda-lime substrate and annealed at 700 degrees C in a tubular furnace in N-2 ambient. The morphology, structure, composition and chemical state of the prepared nanostructures were characterized by SEM, XRD, TEM, SAED and XPS measurements. The Na0.3WO3 1D nanostructures were found to have a cubic crystalline structure and grown along the [001] direction. The nanorods are a few micrometres in length and about 50 nm in diameter. The field-emission application of the prepared samples at different distances between the cathode and the anode was characterized in a UHV chamber at room temperature and a field enhancement factor of 1736 at a distance of 350 mu m was found.
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页数:6
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