Figure 3From: Charge transfer between photosynthetic proteins and hematite in bio-hybrid photoelectrodes for solar water splitting cells Scanning electron micrographs of hematite films coated with different amounts of PC, e.g. incubation for 3 h with a melanin-forming mixture containing 0.02 (a, b), 0.2 (c, d) and 2 (e, f) mg ml −1 incubated from top to bottom row. The scale bar is 1 μm (left) or 0.5 μm (right).Back to article page