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.
引用
收藏
页数:6
相关论文
共 46 条
[1]   Synthesis and atmospheric pressure field emission operation of W18O49 nanorods [J].
Agiral, Anil ;
Gardeniers, J. G. E. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (39) :15183-15189
[2]   The effect of heating time on growth of NaxWO3 nanowhiskers [J].
Azimirad, R. ;
Goudarzi, M. ;
Akhavan, O. ;
Moshfegh, A. Z. .
VACUUM, 2008, 82 (08) :821-826
[3]   Growth and characterization of sodium-tungsten oxide nanobelts with U-shape cross section [J].
Azimirad, R. ;
Goudarzi, M. ;
Akhavan, O. ;
Moshfegh, A. Z. ;
Fathipour, M. .
JOURNAL OF CRYSTAL GROWTH, 2008, 310 (04) :824-828
[4]   Simple Method to Synthesize NaxWO3 Nanorods and Nanobelts [J].
Azimirad, R. ;
Akhavan, O. ;
Moshfegh, A. Z. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (30) :13098-13102
[5]   Controlled growth and characterization of tungsten oxide nanowires using thermal evaporation of WO3 powder [J].
Baek, Yunho ;
Yong, Kijung .
JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (03) :1213-1218
[6]   A novel heteronanostructure system:: Hierarchical W nanothorn arrays on WO3 nanowhiskers [J].
Baek, Yunho ;
Song, Yoonho ;
Yong, Kijung .
ADVANCED MATERIALS, 2006, 18 (23) :3105-+
[7]   THE SODIUM TUNGSTEN BRONZES [J].
BROWN, BW ;
BANKS, E .
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1954, 76 (04) :963-966
[8]   Superconductivity in the tungsten bronze RbxWO3 (0.20≤x≤0.33) in connection with its structure, electronic density of states, and phonon density of states [J].
Brusetti, R. ;
Bordet, P. ;
Bossy, J. ;
Schober, H. ;
Eibl, S. .
PHYSICAL REVIEW B, 2007, 76 (17)
[9]   Field emission from vertically aligned conductive IrO2 nanorods [J].
Chen, RS ;
Huang, YS ;
Liang, YM ;
Hsieh, CS ;
Tsai, DS ;
Tiong, KK .
APPLIED PHYSICS LETTERS, 2004, 84 (09) :1552-1554
[10]   Raman scattering and field-emission properties of RuO2 nanorods -: art. no. 103104 [J].
Cheng, CL ;
Chen, YF ;
Chen, RS ;
Huang, YS .
APPLIED PHYSICS LETTERS, 2005, 86 (10) :1-3