Effect of annealing temperature on the dispersion energy parameters of sol-gel routed molybdenum oxide thin film

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Author: 
Adal Arasu, P. and Victor Williams, R.
Abstract: 

This paper reports the influence of annealing temperature on optical and dispersion energy parameters of sol-gel routed spin – coated Molybdenum tri Oxide (MoO3) thin films. The higher annealing temperatures increase the values of dispersion energy parameters.XRD study reveals the formation of α- orthorhombic phase at higher annealing temperature and amorphous nature at lower annealing temperature. The optical band gap of MoO3 film is found to be 3.3 -3.8eV, and the refractive index of the film is found to be 2.2 -2.9. The dispersion curve of the refractive index shows an aberrant dispersion in the absorption region. Using the single oscillator of Wemple –Didomenico model the different dispersion energy parameters are evaluated.

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