Table 1

Comparison of the field emission properties between the different ZnO nanostructures

Type of ZnO nanostructure

Turn-on field (V μm-1)

Threshold field (V μm-1)

β


Leaf-like (30 min)

2.94

4.35

2,800

Long NWs arrays (60 min)

3.69

5.72

2,526

Needle-like

3.87

5.65

2,284


Fang et al. Nanoscale Research Letters 2012 7:197   doi:10.1186/1556-276X-7-197

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