Fabrication, Characterization, Properties, and Applications of Low-Dimensional BiFeO₃ Nanostructures

Figure 13

(a) Polarization-electric field hysteresis loops at various frequencies reveal diode-like behavior in one direction, (b) light (red and blue) and dark (black curve, running through the origin) I-V measurements completed at 2.85 suns intensity reveal photovoltaic effects in these device structures. There is no observed change in the light I-V response upon application of an electric field and (c) average EQE measurements for five different contacts on a single sample reveal efficiencies 10% under illumination with band gap light.

(a)

(b)

(c)