Author:
Larciprete Maria Cristina,Ceneda Daniele,Scirè Daniele,Mosca Mauro,Adorno Dominique Persano,Dereshgi Sina Abedini,Aydin Koray,Macaluso Roberto,Voti Roberto Li,Sibilia Concita,Cesca Tiziana,Mattei Giovanni,Centini Marco
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.