Optical and Electrical Properties of V2O5 Thin Films Fabricated by Pulsed Laser Deposition

概要

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V2O5 thin films were prepared by pulsed laser deposition (PLD). We studied the response of the phosphorescence energy of the double bond between vanadium and oxygen (V=O) on basicity. The results show that the insertion of Li+ leads to a blue shift of the wavelength for the V=O peak with increasing electric charge. The V2O5 thin films, soaked in dimethylsulfone (DMSO2), acetone, and dilute HNO3 solutions, also lead to a blue shift of the wavelength for the V=O peak. In addition, the electrical properties of the V2O5 thin films were studied by atomic force microscopy (AFM). The current–voltage ($I$–$V$) characterization of V2O5 thin films ($T_{\text{s}}$ = room temperature, $P_{\text{O$_{2}$}}$ = vacuum) shows erasing, metastable reproducing and recording states. The reversibility of phase transitions for V2O5 thin films depends on the conditions for fabrication by PLD.
2008-01-25