Electron field emission from Fe-doped TiO2 nanotubes

被引：56
|
作者：
Wang, Chih-Chieh [1 ]
Wang, Kuan-Wen [1 ,2 ]
Perng, Tsong-Pyng [1 ,3 ]
机构：
[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan
[2] Natl Cent Univ, Inst Mat Sci & Engn, Chungli 320, Taiwan
[3] Yuan Ze Univ, Dept Chem Engn & Mat Sci, Chungli 320, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 14期
关键词：
ALIGNED CARBON NANOFIBERS; THIN-FILMS; TITANIA NANOTUBES; TEMPERATURE; NANOWIRES; PHOTOCATALYSIS; MORPHOLOGY;
D O I：
10.1063/1.3373607
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Titanium dioxide nanotubes were prepared by refluxing TiO2 in 10 M NaOH at 200 C for 12 h. The light absorption edge was slightly shifted to a longer wavelength when 0.025 mol % of iron was incorporated to TiO2 nanotubes. A turn-on field at 12 V/mu m and a maximum current density of 12 mA/cm(2) at 19 V/mu m was observed for the Fe-doped but not for pure TiO2. The field emission behavior can be correlated with the geometry and electronic states of the nanotubes. (C) 2010 American Institute of Physics.[doi: 10.1063/1.3373607]
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页数：3
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