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Etude et développement de composants thermoélectriques à base de couches minces

Abstract : Thermoelectrics is a science recently given to the style of the day, as power sources scavenging. From these perspectives, study and design of thin films thermoelectric modules are justified: actually these modules, with their low dimensions, about one centimetre square, can be integrated and used in many and varied fields such as car industry, human body environment, wireless sensors power supply... Thus realization and characterization of several modules have been carried out, with different materials and various geometries. For that, development of semimetallic and semiconductor thin films processes, respectively with bismuth/antimony and silicon/silicon-germanium, has been studied and optimized. Moreover use of nanostructured materials can increase thermoelectric performances, in particular via a decrease in thermal conductivity. Within this framework, a theoretical study of electrical and thermal transports in nanostructures has been lead. This study has been validated by experimental measurements realized on Si/SiGe superlattices, justifying their integration into thermoelectric devices.
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Contributor : Guillaume Savelli <>
Submitted on : Tuesday, February 19, 2008 - 1:59:58 PM
Last modification on : Friday, November 6, 2020 - 3:35:27 AM
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  • HAL Id : tel-00257433, version 1



Guillaume Savelli. Etude et développement de composants thermoélectriques à base de couches minces. Matière Condensée [cond-mat]. Université Joseph-Fourier - Grenoble I, 2007. Français. ⟨tel-00257433⟩



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