Figure 5.

The real-time photocurrent response of the ZnO nanoneedle array/water UV detector. (a) Photocurrent response under on/off UV light radiation with the illumination wavelength of 385 nm. Enlarged (b) rising edge and (c) decaying edge of the photocurrent response.

Li et al. Nanoscale Research Letters 2013 8:415   doi:10.1186/1556-276X-8-415
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