P214
Highly efficient photon-to electron conversion with mercurochrome-sensitized oxide semiconductor solar cells
Kohjiro Hara,
Kazuhiro Sayama,
Hironori Arakawa
NIMC
We studied for the first time dye-sensitized nanoporous oxide semiconductor solar cells
using mercurochrome,one of 9-phenylxanthene dye,as a photosensitizer. A highly efficient
monochromatic photon-to electron conversion efficiency(IPCE)of 69% at 510 nm was observed
for a mercurochrome-sensitized ZnO solar cell with I-/I3- redox. This highly efficient
IPCE indicates that electron transfer process from excited mercurochrome to the conduction
band of semiconductor and from I- ion to oxidized mercurochrome occurred effectively.
The photoelectrochemical property of mercurochrome-sensitized solar cells depended remarkably
on kind of oxide semiconductors, thickness of oxide thin films, and electrolyte.
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