Élaboration par pulvérisation magnétron réactive d'une couche thermochrome à base de dioxyde de vanadium. Application à la régulation passive de la température de panneaux solaires

Abstract : This work is incorporated within the framework of a Cifre thesis with the partnership of the VIESSMANN Faulquemont SAS society to end in a new generation of absorbent layer in order to regulate the temperature of a solar cell in a passive and reversible way. This absorbent layer is based on vanadium dioxide (VO2), this thermochromic material exhibits a phase semiconductor to metal transition depending on its temperature. In a first step, the synthesis of VO2 films at 500 °C will be exposed and then we will present a new process to obtain a pure VO2 phase with a film deposited at room temperature. The study in temperature of the optical and electrical properties of these two kinds of coatings will be discussed, same as the effects on the phase transition of parameters such as the grain size or the internal stresses. Eventually, we will study the physical properties of a VO2+V4O9 two-phase system as an absorbent layer which is, in fine, very beneficial for the thermal regulation of a solar panel
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Alan Corvisier. Élaboration par pulvérisation magnétron réactive d'une couche thermochrome à base de dioxyde de vanadium. Application à la régulation passive de la température de panneaux solaires. Autre. Université de Lorraine, 2014. Français. ⟨NNT : 2014LORR0024⟩. ⟨tel-01750682⟩

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