Advanced Materials · 2004 · 253 citations · 32 references
Natural SciencesMaterials SciencePhysicsElectronic MaterialsNanotechnologySemiconductor DevicesCarbon NanomaterialsMetal Oxide NanomaterialsNanoelectronicsNanostructured Electronic MaterialsNanowiresCurrent DensityField EmissionNanowire CharacterizationNanowire SynthesisOxide NanowiresSemiconductor NanowiresZinc Oxide Nanostructures
Enhanced field emission from ZnO nanowires grown on carbon cloth (see Figure) has been measured. These emitters produced a field emission current density of 1 mA cm–2 at about 0.7 V μm–1, corresponding to an exceptionally high field-enhancement factor of 4.11 × 104. Such an extremely high field-enhancement factor is believed to be the combined effect of the high aspect ratio of ZnO nanowires and the geometry of the carbon-cloth substrate.
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