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. 2016 May 4;7:11474. doi: 10.1038/ncomms11474

Figure 3. Photoelectrochemical performance of the photoelectrodes.

Figure 3

Constant light current–potential curves of the C/TiO2/Ti/n+p-Si photocathode in a 0.05 M AQDS+1.0 M H2SO4 solution (a) and Pt/p+n-Si photoanode in a 0.2 M HBr+1.0 M H2SO4 solution (c) under various magnetically stirring speeds. The inset in a and c shows chopped light current–potential curves of the photocathode at 1,000 r.p.m. magnetic stirring speed and the photoanode at 200 r.p.m. magnetic stirring speed, respectively. Corresponding half-cell STC conversion efficiency for C/TiO2/Ti/n+p-Si photocathode at 1,000 r.p.m. stirring speed (b) and for Pt/p+n-Si photoanode at 200 r.p.m. stirring speed (d). Light source: AM 1.5-G 100 mW cm−2.