Direct catalyst-free self-assembly of large area of horizontal ferromagnetic ZnO nanowire arrays

Large-area zinc oxide (ZnO) nanowire arrays have important applications in flat-panel X-ray sources and detectors. Doping is an effective way to enhance the emission current by changing the nanowire conductivity and the lattice structure. In this paper, large-area indium-doped ZnO nanowire arrays were prepared on indium-tin-oxide-coated glass substrates by the thermal oxidation method. Doping with indium concentrations up to 1 at% was achieved by directly oxidizing the In-Zn alloy thin film. The growth process was subsequently explained using a self-catalytic vapor-liquid-solid growth mechanism. The field emission measurements show that a high emission current of ~20 mA could be obtained from large-area In-doped sample with a 4.8 × 4.8 cm2 area. This high emission current was attributed to the high crystallinity and conductivity change induced by the indium dopants. Furthermore, the application of these In-doped ZnO nanowire arrays in a flat-panel X-ray source was realized and distinct X-ray imaging was demonstrated.

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Growth mechanism and diameter control of well-aligned small-diameter ZnO nanowire arrays synthesized by a catalyst-free thermal evaporation method

Nanotechnology ◽

10.1088/0957-4484/20/49/495604 ◽

2009 ◽

Vol 20 (49) ◽

pp. 495604 ◽

Cited By ~ 58

Author(s):

Su Li ◽

Xiaozhong Zhang ◽

Bin Yan ◽

Ting Yu

Keyword(s):

Growth Mechanism ◽

Thermal Evaporation ◽

Small Diameter ◽

Nanowire Arrays ◽

Zno Nanowire ◽

Thermal Evaporation Method ◽

Evaporation Method ◽

Catalyst Free ◽

Zno Nanowire Arrays ◽

Diameter Control

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Surface reconstruction of ZnO nanowire arrays via solvent-evaporation-induced self-assembly

Applied Surface Science ◽

10.1016/j.apsusc.2010.11.027 ◽

2011 ◽

Vol 257 (8) ◽

pp. 3374-3377 ◽

Cited By ~ 3

Author(s):

Fang Fang ◽

Dongxu Zhao ◽

Binghui Li ◽

Zhenzhong Zhang ◽

Dezhen Shen ◽

...

Keyword(s):

Surface Reconstruction ◽

Self Assembly ◽

Solvent Evaporation ◽

Nanowire Arrays ◽

Zno Nanowire ◽

Zno Nanowire Arrays ◽

Evaporation Induced Self Assembly

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A New Method for Bulk-Quantity Synthesis of Patterned Well-Aligned ZnO Nanowire Arrays

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.3509 ◽

2005 ◽

Vol 475-479 ◽

pp. 3509-3512

Author(s):

X.Y. Xu ◽

Hui Zhao Zhang ◽

Qiang Zhao ◽

Yun Fa Chen ◽

Jian Xu ◽

...

Keyword(s):

Nanowire Arrays ◽

Photoluminescence Spectra ◽

Zno Nanowire ◽

Large Area ◽

Stainless Steel Mesh ◽

High Quality ◽

Zno Nanowire Arrays ◽

Growth Method ◽

Controllable Growth ◽

20 Nm

Large area well-aligned ZnO nanowire arrays have successfully been synthesized on an unconventional substrate: stainless-steel mesh at a low growth temperature of 400oC. The as-grown ZnO nanowires have uniform diameters about 20 nm and a strong UV peak was observed in photoluminescence spectra. The growth method provides a novel way to produce high quality ZnO nanowire arrays, and can be also used to direct the controllable growth of other nanomaterials.

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