We investigated infrared reflectivity of undoped and Tungsten (W) doped Vanadium dioxide (VO2) films at varying temperatures. Undoped VO2 exhibited a clear phase transition at 100°C, achieving near 0% reflectivity, or perfect light absorption. As W doping concentration increased, the phase-transition temperature decreased, maintaining the zero-reflectivity condition. Only a 0.75% W doping enabled room temperature perfect absorption without heating the film.
Larciprete, M.C., Ceneda, D., Scirè, D., Mosca, M., Adorno, D.P., Dereshgi, S.A., et al. (2023). VO2 Tungsten Doped Film IR Perfect Absorber. EPJ WEB OF CONFERENCES, 287 [10.1051/epjconf/202328714009].
VO2 Tungsten Doped Film IR Perfect Absorber
Scirè, Daniele;Mosca, Mauro;Adorno, Dominique Persano;Macaluso, Roberto;
2023-10-18
Abstract
We investigated infrared reflectivity of undoped and Tungsten (W) doped Vanadium dioxide (VO2) films at varying temperatures. Undoped VO2 exhibited a clear phase transition at 100°C, achieving near 0% reflectivity, or perfect light absorption. As W doping concentration increased, the phase-transition temperature decreased, maintaining the zero-reflectivity condition. Only a 0.75% W doping enabled room temperature perfect absorption without heating the film.
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