Figure 3
From: Visible light-driven CdSe nanotube array photocatalyst
PEC performance. (a) Current density-potential (J-V) characteristics obtained from CdSe nanotube arrays under dark conditions and visible light illumination (λ > 400 nm, 100 mW/cm2). The scan rate is 10 mV/s. (b) The photocurrent response to on-off cycles of illumination at a constant potential of −0.2 V vs. Ag/AgCl.