Chapter

Electrochemistry in Industry

pp 261-297

Photoelectrochemical Cells

  • Adam HellerAffiliated withBell Laboratories

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Abstract

Photoelectrochemical solar cells based on semiconductor liquid junctions have been developed over in the past six years into efficient converters of sunlight into electrical energy or hydrogen. Solar conversion efficiency has increased from less than 1% to 12% and operational life from hours to months. The new cells retain about 70% of their single efficiency when made with chemically formed, polycrystalline materials, far more than other types of solar cells.