Transient photocurrent of the ZnO nanowire in air under UV illumination. The intensity of the λ = 313 nm light is approximately 1.3 mW/cm2. Inset: steady-state photocurrent versus light intensity in air. The bias voltage is 0.3 V and is the same for all other photocurrent measurements.
Bao et al. Nanoscale Research Letters 2011 6:404 doi:10.1186/1556-276X-6-404