A solar cell having a plurality of micro-channels. Specifically, a plurality of micro-channels are formed in a semiconductor material that has been disposed on the surface of a planar electrode. The semiconductor material is saturated with dye and injected with an electrolyte solution. The micro-channels are insulated and filled with a material that provides a catalyst material for the electron transfer to an oxidant during the photovoltaic process. The catalyst disposed in the micro-channels forms the upper electrode of the solar cell. The micro-channels are arranged to provide a reduced migration path for the oxidant.

 
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