Abstract
The economic viability of photoelectrochemical cells is examined for two representative systems based on n-type GaAs and n-type CdSe electrodes in contact with aqueous polyselenide and polysulfide electrolytes respectively. Cell fabrication costs for these systems are compared with a test case comprising a sequence of processes in a typical fabrication of silicon p-n junction solar cells. A standardized methodology based on the solar array manufacturing industry costing standards improved price estimation guideline is employed for the comparison. Under the framework of assumptions implicit in this analysis, photoelectrochemical systems emerge as a viable cost-competitive option to silicon p-n junction solar cells. The sensitivity of the computed cell costs to parameters such as cell efficiency and material costs is discussed.
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