Journal
APPLIED PHYSICS LETTERS
Volume 103, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4824440
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Funding
- NNSFC [60925001]
- MOST of China [2010CB327703]
- Fundamental Research Funds for the Central Universities
- Science and Technology Department
- Economic and Information Industry Commission of Guangdong Province
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Temperature dependence of field emission characteristics of tungsten sub-oxide (W18O49) nanowires was investigated in the range from 143 K to room temperature. It is found that the field emission currents under the same applied electrical field decrease with the decreasing temperature. A two-step process involving the phonon-assisted tunneling from defect states to conduction band was introduced to explain the observed phenomenon. A good agreement between the theoretical and experimental results was achieved. (C) 2013 AIP Publishing LLC.
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