Fig. 4
From: Efficient solar hydrogen generation in microgravity environment
Simulations of the J–V characteristics of the thin-film and nanostructured p-InP–Rh photoelectrodes in terrestrial and microgravity environments. Illumination was assumed to occur at 70 mW/cm2 through a W-I lamp. The electrolyte composition was 1 M HClO4 with the addition of 1% (v/v) isopropanol. The microgravity environment was artificially created by assuming that the J–V characteristics of the thin-film photoelectrode are mass transfer limited (see text for details). The dashed red line corresponds to the nanostructured sample in 1g, the subjacent yellow line corresponds to the sample in 10−6g. The blue dotted line shows the behaviour of the thin-film sample under terrestrial conditions whereas the cyan dotted-dashed line corresponds to the J–V characteristics in 10−6g
