Improvement of field emission characteristics of tungsten oxide nanowires by hydrogen plasma treatment

W. C. Tsai, S. J. Wang, C. L. Chang, C. H. Chen, R. M. Ko, B. W. Liou

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9 Citations (Scopus)

Abstract

The use of hydrogen plasma (H-plasma) treatment to improve field emission (FE) characteristics of self-synthesized tungsten oxide nanowires (TONWs) is reported. With a H-plasma treatment under a working power of 200 W and a pressure of 500 mtorr for 20 s, improved FE characteristics with a turn-on field (4.7 V/μm at 10 μA/cm2) lower than those of the as-grown case by 23% and a reduction in the effective emission barrier of 0.72 eV were obtained, which is attributed to the reduction in oxygen adsorption, decrease in the wire length and density, and transition of TONWs surfaces from well crystalline into the amorphous phase.

Original languageEnglish
Article number16001
JournalEPL
Volume84
Issue number1
DOIs
Publication statusPublished - 2008 Oct 1

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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