الرئيسية / Uncategorised / الخواص البصرية لخامس اوكسيد الفناديوم المحضر بطريقة السول جل

الخواص البصرية لخامس اوكسيد الفناديوم المحضر بطريقة السول جل

Hashim M. Jabbar
Department of Physics, College of Science, University of Basrah
Basrah – Iraq
Abstract
Vanadium pentoxide (V2O5) thin film were deposited using the sol-gel technique. An
aqueous solution of V2O5was used for depositing the thin films on glass substrates. The
structural and optical characteristics of both non-annealed and annealedV2O5 thin films were
examined with X-ray diffraction (XRD) and double-beam UV-visible spectrophotometry. The
X-ray diffraction study of the V2O5thin films revealed a mixture of amorphous and
polycrystalline nature. The dispersion of the refractive index is discussed in term of WlempleDiDomenico single oscillator model, many dispersion parameters such as single oscillator
energy (Eo ),dispersion energy ( Ed ), refractive index ( n(0) ), were discussed using Miller‟s
rule, the optical absorption at the fundamental absorption edge dielectric constant (),
moment of the dielectric constant optical spectrum( M-1 ,M-3 )and energy gap by WimpleDiDomenico approximation (
WDD g
)have been calculated, non- linear optical susceptibility (
(3)

) has been discussed, direct energy gap by Tauc relation (
T g
), and Urbach energy of the
localized states (Eu) were also calculated. The results were found to be consistent with the
data of the previous studies carried out on V2O5 thin films.
https://doi.org/10.31257/2018/jkp/100101
Keywords: Metal oxides, Vanadium pentoxide, sol gel, optical properties, energy gap,
dispersion parameters.

 

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