Photoelectrochemical Based Direct Conversion Systems for Hydrogen Production

    Research output: Contribution to conferencePaper


    Photon driven, direct conversion systems consist of a light absorber and a water splitting catalyst as a monolithic system; water is split directly upon illumination. This one-step process eliminates the need to generate electricity externally and subsequently feed it to an electrolyzer. These configurations require only the piping necessary for transport of hydrogen to an external storage systemor gas pipeline. This work is focused on multiphoton photoelectrochemical devices for production of hydrogen directly using sunlight and water. Two types of multijuction cells, one consisting of a-Si triple junctions and the other GaInP2 /GaAs homojunctions, were studied for the photoelectrochemical decomposition of water into hydrogen and oxygen from an aqueous electrolyte solution. To catalyzethe water decomposition process, the illuminated surface of the device was modified either by addition of platinum colloids or by coating with ruthenium dioxide. The colloids have been characterized by gel electrophoresis.
    Original languageAmerican English
    PagesVol. I: 333-343
    Number of pages11
    StatePublished - 1996
    Event1996 U.S. DOE Hydrogen Program Review - Miami, Florida
    Duration: 1 May 19962 May 1996


    Conference1996 U.S. DOE Hydrogen Program Review
    CityMiami, Florida

    NREL Publication Number

    • NREL/CP-22545


    Dive into the research topics of 'Photoelectrochemical Based Direct Conversion Systems for Hydrogen Production'. Together they form a unique fingerprint.

    Cite this