Figure 5From: ZnO nanoneedle/H2O solid-liquid heterojunction-based self-powered ultraviolet detectorThe 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.Back to article page