III–V Nanowires: Synthesis, Property Manipulations, and Device Applications
Figure 9
Typical I-V curves of the single GaAs NW photovoltaic device under the dark and 1 sun illumination (AM1.5 G, 100 mW/cm2) with the current density (J) normalized to the light absorption cross-sectional area (right axis). Insets show the corresponding SEM images of the devices. (a) The NW diameter is ~70 nm with the Au-Ga alloy tip and Ni as electrical contacts and (b) the NW diameter is ~60 nm contacted with Au and Ni electrodes without any catalytic tip involved. Reproduced from [40] with permission from The American Institute of Physics.
