Figure 8From: Charge transfer between photosynthetic proteins and hematite in bio-hybrid photoelectrodes for solar water splitting cells Comparison of three different coatings (condition B-D in Figure 4 , upper panel) on hematite in Fe3p on-resonance condition at 54.4 eV photon energy under dark (a) and illuminated (b) conditions. With more advanced film processing technology, the VB PES spectra shifts closer towards the Fermi level (0 eV binding energy).Back to article page