Modeling of Bipolar Semiconductor Photoelectrode Arrays for Electrolytic Processes

S. Cervera-March, E. S. Smotkin, A. J. Bard, A. Campion, M. A. Fox, T. Mallouk, S. E. Webber, J. M. White

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The effect of light flux, redox couple concentration, and the number of panels on the electrical and chemical efficiency of a bipolar semiconductor photoelectrode array has been examined using a model based on the power characteristic curves of a single photoelectrochemical cell and the current-voltage characteristics of any desired electrolytic process. Data from a single bipolar CdSe//CoS photoelectrode were used to simulate water splitting array performance under a variety of conditions. Experimental data from a 6 photopanel array were consistent with the simulated results. The optimum number of panels was shown to be independent of light intensity over a range of 0.1-1 AM2 and of the concentration of polysulfide in the interior of the arrays from 0.1 to 1M. The efficiency of the CdSe/CoS array for electrical generation (after correcting for light absorption due to the electrolyte) is about 6%.

Original languageEnglish (US)
Pages (from-to)567-573
Number of pages7
JournalJournal of the Electrochemical Society
Issue number3
StatePublished - Mar 1988

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry


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