Electron field emission from Fe-doped TiO2 nanotubes

Chih Chieh Wang, Kuan Wen Wang, Tsong Pyng Perng

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

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 TiO 2 nanotubes. A turn-on field at 12 V/μm and a maximum current density of 12 mA/ cm2 at 19 V/μm 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.

Original languageEnglish
Article number143102
JournalApplied Physics Letters
Volume96
Issue number14
DOIs
StatePublished - 2010

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