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- W3112699654 abstract "Now-a-days, thermochromic materials have gained the interest of scientific community because of their diverse applications. Bismuth vanadate (BiVO4) is a promising candidate for thermochromic application. In the present work, we report on the thermochromism of m-BiVO4 films prepared by a modified citrate-route of simple sol-gel spin coating method, for the first time. X-ray diffraction (XRD) study witnesses the formation of monoclinic structure of BiVO4 films. From the Raman study, the symmetric (Ag) and the anti-symmetric (Bg) of V-O stretching and bending modes of BiVO4 are confirmed. The highest transmittance of 95% is obtained in the near-infrared region. The Urbach energy, steepness parameter and strength of electron-phonon interactions are extracted from the optical data and correlated with other measurements. The films possess the petal-like morphology throughout the substrate. The temperature induced reversible colour change of the films (from yellow to reddish-orange) clearly demonstrates the thermochromic behaviour of BiVO4 films. This may be due to the annealing temperature induced variation in structural distortion of BiVO4 from monoclinic to tetragonal phase." @default.
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- W3112699654 date "2021-02-01" @default.
- W3112699654 modified "2023-10-15" @default.
- W3112699654 title "Temperature induced thermochromism of m-BiVO4 thin films prepared by sol-gel spin coating technique" @default.
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- W3112699654 doi "https://doi.org/10.1016/j.matlet.2020.129200" @default.
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