Abstract
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 characterized 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 of 500 °C and also corresponding to the largest grains size of a value of 350 nm.
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Acknowledgments
This research program was generously supported by grants from the National Research Foundation of South Africa (NRF), the French Centre National pour la Recherche Scientifique, iThemba LABS, the UNESCO-UNISA Africa Chair in Nanosciences & Nanotechnology, the Organization of Women in Science for the Developing World (OWSDW) and the Abdus Salam ICTP via the Nanosciences African Network (NANOAFNET) as well as the African Laser Centre (ALC) to whom we are grateful.
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Diallo, A., Ndiaye, N.M., Ngom, B.D. et al. Effect of substrate temperature on the structure and the metal insulator transition in pulsed laser deposed V02\ films on soda lime glass. J Opt 44, 36–44 (2015). https://doi.org/10.1007/s12596-014-0232-7
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DOI: https://doi.org/10.1007/s12596-014-0232-7