Electrical properties of flash-evaporated V2O5 films

Julien, C.; Khelfa, Anissa; Guesdon, J. P.; Tuncheva, V.; Giligny, François

doi:10.1007/bf02375816

Cited by 4 publications

(1 citation statement)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The performance of devices utilizing V 2 O 5 films depends on their film quality, which is determined by the morphology, crystalline, degree of disorder, stoichiometry that are highly dependent on the film-deposition method and preparation conditions such as the environmental atmosphere, deposition temperature, deposition rate, and post-deposition heat treatment [3][4][5]. Therefore, many techniques have been used to prepare V 2 O 5 thin films [3][4][5][6][7][8][9][10][11][12][13][14][15]. In this study, sol-gel technique with spin coating method will be used to prepare V 2 O 5 thin films to investigate their optical properties.…”

Section: Introductionmentioning

confidence: 99%

Untitled

2019

Int J Phys Stud Res

View full text Add to dashboard Cite

Vanadium pentoxide (V 2 O 5 ) thin films have been prepared by Sol-Gel technique. The fluid resin which was prepared by dissolving V 2 O 5 powder (99.6%) in H 2 O 2 was spin coated on a glass substrate at room temperature. The effect of preparation conditions, such as spin speed and acceleration, on the film thickness has been investigated. Speed was found to be the most affecting parameter on the film thickness. Transmittance and reflectance spectra were made at normal incidence on these films in the range of 350-900 nm. SCOUT program was used to find out the thickness of all samples. In the region of the fundamental absorption edge, the absorption coefficient was calculated directly from the experimental transmittance and reflectance data using a formula that is nearly valid for non-uniform in homogeneous films. Moreover, the bandgap energy was found to be around 2.3 eV. The refractive index of the films was calculated using PUMA code which is based on a certain fitting procedure for transmittance spectra according to Swanepoel formula. All results were in good agreement with those found in literature.

show abstract