標題: Field emission of vertically aligned V2O5 nanowires on an ITO surface prepared with gaseous transport
作者: Wu, Ming-Cheng
Lee, Chi-Shen
應用化學系
Department of Applied Chemistry
關鍵字: Crystal growth;Nanomaterials;Optical materials and properties;V2O5
公開日期: 1-八月-2009
摘要: Growing V2O5 nanowires (NWs) on a conducting glass substrate combines gaseous transport and pyrolytic deposition of vanadium polyoxometalate anions, and yields vertically aligned vanadium-oxide nanowires. Scanning electron and transmission electron microscopy, selected-area electron diffraction, Raman spectra and powder X-ray analyses indicate that V2O5 nanowires as synthesized were single-crystalline and grew anisotropically among direction [010]. NH2OH center dot HCl served not only as a reducing agent to produce vanadium polyoxometalate clusters but also as a source of NH3 gas to facilitate the vapor pyrolysis and deposition. The optical properties of V2O5 nanowires exhibit a character dependent on structure. Field emission (FE) measurements show a small turn-on field voltage similar to 8.3V/mu m, maximum Current density 1.8 mA/cm(2), and a linear Fowler-Nordheim behavior. (C) 2009 Elsevier Inc. All rights reserved.
URI: http://dx.doi.org/10.1016/j.jssc.2009.05.042
http://hdl.handle.net/11536/149820
ISSN: 0022-4596
DOI: 10.1016/j.jssc.2009.05.042
期刊: JOURNAL OF SOLID STATE CHEMISTRY
Volume: 182
起始頁: 2285
結束頁: 2289
顯示於類別:期刊論文