Générateurs thermoélectriques imprimés sur substrats souples à base de matériaux hybrides pour des applications autour de la température ambiante

Abstract : Flexible lightweight printed thermoelectric devices can become particularly interesting with the advent of ubiquitous sensing and within the context of current energy and environmental issues. However, major drawbacks of state of the art thermoelectric materials must be addressed to make waste heat recovery devices commercially feasible. In this PhD thesis, we’ve elaborated and described a method to fabricate optimized, fully inkjetprinted flexible thermoelectric generators based on organic and hybrid semiconductors. This research project can be divided into three stages: First is the development of effective, stable and solution-processed p-type and n-type thermoelectric materials. Our effort in optimizing thermoelectric materials were based on modulation of charge carrier concentration and on control of morphology. Second, design and modeling of thermoelectric devices and their geometric parameters using numerical simulation methods. Numerical simulations were based on a 3D-finite element analysis and simulation software for coupled physical problems to model and design thermoelectric devices. Finally, formulation of materials into ink in order to produce thermoelectric generators by inkjet printing deposition. Various structures and architectures were experimentally characterized and systematically compared to numerical evaluations. Hence, we produced an extensive study on designing and producing thermoelectric devices operating at near ambient temperature and conditions.
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Salim Ferhat. Générateurs thermoélectriques imprimés sur substrats souples à base de matériaux hybrides pour des applications autour de la température ambiante. Energie électrique. Université de Limoges, 2018. Français. ⟨NNT : 2018LIMO0032⟩. ⟨tel-01875552⟩

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