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    • Keywords


      Metal-cluster oxides; d-d transition; single crystals; photoresponsive semi-conductors

    • Abstract


      PEC studies on the single crystals of the metal-cluster oxide compounds. A2Mo3O8 (A = Zn, Mg, Fe), and polycrystalline LiYMo3O8 are reported. The photoresponse behaviour is attributed to the Mod-d transition. The photopotential, the photocurrent vs applied voltage and the wavelength data indicate thatn-Zn2Mo3O8 is stable and possesses a small and indirect band gap of 1·55 eV and a direct band gap of 1·9 eV. With change in A ions in A2Mo3O8, there is no significant change in the PEC properties. LiYMo3O8 is found to be ofp-type. PEC studies show that excepting for poor electronic conductivity, A2Mo3O8 possesses all the requisitie characteristics of an ideal photoanode for PAE of water for trapping solar energy.

    • Author Affiliations


      M Paranthaman1 G Aravamudan1 G V Subba Rao1

      1. Materials Science Research Centre, Indian Institute of Technology, Madras - 600 036, India
    • Dates

  • Bulletin of Materials Science | News

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