Growth and field-emission property of tungsten oxide nanotip arrays.

Authors :: Jun Zhou
Li Gong
Shao Zhi Deng
Jun Chen
Jun Cong She
Ning Sheng Xu
Rusen Yang
Zhong Lin Wang
Source :: Applied Physics Letters; 11/28/2005, Vol. 87 Issue 22, p223108, 3p, 3 Diagrams, 2 Graphs
Publication Year :: 2005
Abstract: 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/cm<superscript>2</superscript>) ∼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. [ABSTRACT FROM AUTHOR]