Semiconductor Electrodes: XLV . Photoelectrochemistry of n‐ and p‐Type in Aqueous Solutions

(n‐ and p‐type) electrodes have been characterized in terms of the energetic location of the valence and conduction bands, their voltammetric behavior, and their potential utility in photoelectrochemical cells. They show behavior that is qualitatively similar to the other layered semiconductors in terms of the sensitivity of their properties to growth conditions and surface imperfections. PEC cells based on with as a redox couple were constructed. These reached monochromatic light (He/Ne laser) to electrical conversion efficiencies of over 8%.