期刊
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
卷 10, 期 10, 页码 6465-6472出版社
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2010.2634
关键词
Niobium Diselenide; Nanobelts; Nanorods; Microplates; Films; Field-Emission
类别
资金
- National Science Foundations of China [20671050]
- National Basic Research Program of China (973 Program) [2007CB936302]
Single-crystalline NbSe2 nanobelt, nanorod (containing nanotube), and microplate films were grown on Nb substrates by a surface-assisted chemical-vapor-transport (CVT), respectively. The nanobelts have a rectangular section of 50 x 250 to 300 x 4500 nm(2), and a length up to 330 mu m. The nanorods have a hexagonal section with a diameter of about 0.1-0.5 mu m, and a length up to 15 mu m. The nanotubes have rectangular, pentagonal or round sections with a diameter of about 0.4-0.5 mu m, a tube-wall thickness of about 45 nm, and a length up to several microns. The microplates have a hexagonal section with a diameter of about 0.05-10 mu m and a thickness of about 100 to 600 nm. Field-emission experiments using the films as cold electron cathodes showed that they had notable emission currents and low turn-on fields, suggesting their potential applications in field emission devices.
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