1 research outputs found
Tuning Interfacial Electron Transfer in Nanostructured Cuprous Oxide Photoelectrochemical Cells with Charge-Selective Molecular Coatings
The coating of nanostructured films
of cuprous oxide with electroactive molecules strongly affects their
photoelectrochemical performance in nonaqueous photocells, with photocurrent
density increased up to an order of magnitude relative to bare cuprous
oxide films or almost completely suppressed, depending on the choice
of molecular adsorbant. Among adsorbants that enhance photocurrent,
a strong variance of photoelectrochemical behavior is observed with
changes in the molecular structure of the sensitizer, associated with
differences in the reorganization energy and molecular size, which
are interpreted to enhance forward electron transport and impede electrolyte/photocathode
recombination, respectively. These results demonstrate that nanostructured
cuprous oxide is a promising cathode material for p-type dye-sensitized
solar cells