Molybdenum x-ray emission spectroscopic study of vacancy-induced electronic states in V2O5-MoO3 thin films and powders

X-ray emission spectra in compound thin films are scarce, although such studies in metals, alloys and other inorganic compounds are available. In this study, compound thin films of V 2 O 5 -MoO 3 and powders of same compositions were investigated to see the effect of V 2 O 5 incorporation in an MoO 3 matrix. For this purpose, Kβ, La and Lβ emissions from Mo present in these matrices were measured. The full width at half-maximum (FWHM) of Lα 2 and Lβ 1 in thin films were found to be different from that of powders. Most of these emission bands show a low asymmetry index before these are split into separate bands. All these findings have been explained on the basis of vacancy production, core hole lifetime, crystal structure and stoichiometric variation of MoO 3 in the V 2 O 5 matrix.

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