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Synthesis and field-emission properties of the tungsten oxide nanowire arrays

✍ Scribed by Kai Huang; Qingtao Pan; Feng Yang; Shibi Ni; Deyan He

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
679 KB
Volume
39
Category
Article
ISSN
1386-9477

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✦ Synopsis

High-density, uniformly distributed and quasi-aligned tungsten oxide nanowire arrays have been synthesized by a conventional thermal evaporation approach on indium tin oxide (ITO) coated glass substrates without any catalysts. The temperature of the substrate was 4502550 C. The tungsten oxide nanowires are single crystalline with growth direction of [0 1 0]. For commercial applications, field emission properties of tungsten oxide nanowires were studied under a poor vacuum at room temperature. The electron field-emission turn-on field ðE to Þ, defined as the macroscopic field required to produce a current density of 10 mA=cm 2 , is about 3:6 V=mm. The performance reveals that the tungsten oxide nanowire arrays can be served as a good candidate for commercial application in fieldemission displays.

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