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Effect of substrate temperature on the structure and the metal insulator transition in pulsed laser deposed VO2 films on soda lime glass

In this paper, we report the effect of soda lime substrate deposition temperature (Ts) on the crystal structure and the metal insulator transition of VO2 thin films. Samples were deposited at substrate deposition temperature ranging from 450 to 600 °C by pulsed-laser deposition and character- ized by x-ray diffraction and UV–VIS spectrophotometer. At a substrate temperature of 550 °C, the VO2 (100) reflection dominate the spectrum showing a change in crystalline grains orientation. The highest transition temperatures of 74 °C with the lowest hysteresis width of 11 °C were obtained on the same sample grown at a substrate deposition temperature of500 °C and also corresponding to the largest grains size of a value of 350 nm.

Auteur(s) : A. Diallo, N.M. Ndiaye, B.D. Ngom, S. Khamlich, K. Talla, S. Ndiaye, N. Manyala, O. Nemraoui, R. Madjoe, A.C. Beye, M. Maaza
Année de publication : 2015
Revue : Journal of Optics
N° de volume : 44
Type : Article
Mise en ligne par : DIALLO Abdoulaye