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 Mo d-d transition. The photopotential, the photocurrent vs applied voltage and the wavelength data indicate that n-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 of p-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.
Original language | English |
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Pages (from-to) | 313-322 |
Number of pages | 10 |
Journal | Bulletin of Materials Science |
Volume | 10 |
Issue number | 4 |
DOIs | |
State | Published - Jul 1988 |
Externally published | Yes |
Keywords
- Metal-cluster oxides
- d-d transition
- photoresponsive semi-conductors
- single crystals