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Figure 3 | Nanoscale Research Letters

Figure 3

From: Photoinduced oxygen release and persistent photoconductivity in ZnO nanowires

Figure 3

Photoconductivity at three UV intensities in vacuum. Same bias voltage and UV wavelength as in Figure 2. The steady-state currents have not been reached after about 5 h. The wire is kept in vacuum until air is let in after about 12 h (marked by a vertical arrow). The current at t = 0 is higher than that in Figures 1 and 2 because the UV was turned on before the dark current had reached its minimum.

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