Organizational Unit:
School of Materials Science and Engineering
School of Materials Science and Engineering
2005-11-21
,
Zhou, Jun
,
Gong, Li
,
Deng, Shao Zhi
,
Chen, Jun
,
She, Jun Cong
,
Xu, Ning Sheng
,
Yang, Rusen
,
Wang, Z. L. (Zhong Lin)
Large-area, quasialigned nanotips of tungsten oxide have been grown by a two-step high-temperature, catalyst-free, physical evaporation deposition process. The tungsten oxide nanotips are single crystalline with growth direction of [010]. The tungsten oxide nanotips exhibit excellent field-emission properties with a low threshold field (for an emission current density of 10 mA/cm²) ~4.37 MV/m and uniform emission from the entire arrays, as well as high time stability. These results make tungsten oxide nanotip arrays a competitive candidate for field-emission displays.