Figure 6: PV power supply.
From: Nanophotonic integrated circuits from nanoresonators grown on silicon
(a) Prominent PV effects can be observed from devices under illumination. Going upwards, I–V curves correspond to the following irradiance levels: 0, 14.9, 29.8, 59.6, 119, 149 and 298 W cm−2. The inset plots fill factor versus irradiance, which peaks at 0.69. (b) Like many planar III–V junctions, Voc and Isc increase versus irradiance in logarithmic and linear fashions, respectively. Under high concentrations, Voc approaches 0.8 V. Owing to their form factor, nanoscale PV devices are perhaps best suited as power supplies under monochromatic illumination and not as solar cells.
