{"id":37470,"date":"2019-07-18T10:34:03","date_gmt":"2019-07-18T08:34:03","guid":{"rendered":"https:\/\/www.iemn.fr\/?p=37470"},"modified":"2019-07-18T10:34:05","modified_gmt":"2019-07-18T08:34:05","slug":"developpement-caracterisation-dun-demonstrateur-de-generateur-thermoelectrique-a-base-de-membranes-de-silicium-couplees-a-de-lingenierie-phononique-2","status":"publish","type":"post","link":"https:\/\/www.iemn.fr\/en\/these\/developpement-caracterisation-dun-demonstrateur-de-generateur-thermoelectrique-a-base-de-membranes-de-silicium-couplees-a-de-lingenierie-phononique-2.html","title":{"rendered":"D\u00e9veloppement &amp; caract\u00e9risation d\u2019un d\u00e9monstrateur de g\u00e9n\u00e9rateur thermo\u00e9lectrique \u00e0 base de membranes de silicium coupl\u00e9es \u00e0 de l\u2019ing\u00e9nierie phononique"},"content":{"rendered":"<style type=\"text\/css\" data-created_by=\"avia_inline_auto\" id=\"style-css-av-av_one_full-25347b0a799d5b9f7058434b2a9c3182\">\n.flex_column.av-av_one_full-25347b0a799d5b9f7058434b2a9c3182{\nborder-radius:0px 0px 0px 0px;\npadding:0px 0px 0px 0px;\n}\n<\/style>\n<div  class='flex_column av-av_one_full-25347b0a799d5b9f7058434b2a9c3182 av_one_full  avia-builder-el-0  avia-builder-el-no-sibling  first flex_column_div av-zero-column-padding'     ><section  class='av_textblock_section av-jy8f35zb-267721c97f882c54456aaa9dd9ea72a8'   itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock'  itemprop=\"text\" ><blockquote>\n<h4><strong><a href=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_.png\"><img loading=\"lazy\" decoding=\"async\" class=\"size-thumbnail wp-image-14684 alignleft\" src=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_-80x80.png\" alt=\"\" width=\"80\" height=\"80\" srcset=\"https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_-80x80.png 80w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_-36x36.png 36w, https:\/\/www.iemn.fr\/wp-content\/uploads\/2018\/03\/ico_these2.fw_-180x180.png 180w\" sizes=\"auto, (max-width: 80px) 100vw, 80px\" \/><\/a>Thierno Moussa BAH<br \/>\n<\/strong><\/h4>\n<p>Thesis defence<br \/>\n03\/07\/2019<br \/>\nIEMN Amphitheatre<\/p>\n<\/blockquote>\n<h4><strong><br \/>\nSummary:<\/strong><\/h4>\n<p>L&rsquo;essor de l&rsquo;Internet des objets (IoT) et des capteurs autonomes et communicants semble \u00eatre retard\u00e9 en raison du manque de source d\u2019\u00e9nergie fiable, s\u00fbre et \u00e0 faible co\u00fbt [Nordrum 2016]. Les r\u00e9cup\u00e9rateurs d\u2019\u00e9nergies thermo\u00e9lectriques pr\u00e9sentent ces avantages cl\u00e9s. Le silicium pr\u00e9sente les avantages d&rsquo;\u00eatre tr\u00e8s abondant, moins polluant sur le plan environnemental et de b\u00e9n\u00e9ficier d&rsquo;installations et de processus technologiques permettant la production en s\u00e9rie de r\u00e9cup\u00e9rateurs d\u2019\u00e9nergies thermo\u00e9lectriques \u00e0 faible co\u00fbt par rapport aux mat\u00e9riaux conventionnel (alliages de tellure de bismuth). Toutefois, le silicium est un mat\u00e9riau thermo\u00e9lectrique m\u00e9diocre en raison de sa conductivit\u00e9 thermique \u00e9lev\u00e9e (150Wm^(-1) K^(-1)) [Haras et al. 2015]. La possibilit\u00e9 de r\u00e9duire la conductivit\u00e9 thermique tout en pr\u00e9servant la conductivit\u00e9 \u00e9lectrique et le coefficient Seebeck est la cl\u00e9 pour am\u00e9liorer le silicium en tant que mat\u00e9riau thermo\u00e9lectrique efficace. \u00c0 cette fin, les efforts sont orient\u00e9s vers la partie phononique du transport de chaleur, qui constitue la contribution dominante dans les semi-conducteurs [Jin 2014]. Les recherches men\u00e9es au cours de cette th\u00e8se ont port\u00e9 sur l&rsquo;int\u00e9gration des membranes de silicium nanostructur\u00e9s de r\u00e9seaux phononiques [Haras 2016; Lacatena et al. 2014; Tang et al. 2010; Yu et al. 2010] dans des d\u00e9monstrateurs de r\u00e9cup\u00e9rateurs d\u2019\u00e9nergies thermo\u00e9lectriques et leur caract\u00e9risation au regard de l&rsquo;\u00e9tat de l\u2019art. Les r\u00e9sultats de ces \u00e9tudes ont d\u00e9montr\u00e9 la faisabilit\u00e9 d\u2019un r\u00e9cup\u00e9rateur d\u2019\u00e9nergie thermo\u00e9lectrique \u00e0 base de silicium pr\u00e9sentant des performances suffisantes pour l\u2019alimentation en \u00e9nergie de n\u0153uds de capteurs autonomes [Vullers et al. 2009] et des performances comparables \u00e0 celles d\u2019un r\u00e9cup\u00e9rateur (\u00e9tat de l\u2019art) \u00e0 base de tellure de bismuth [Bottner 2005] en fonction des conditions de refroidissement de ces derniers. De plus, cette th\u00e8se a d\u00e9montr\u00e9, outre la r\u00e9cup\u00e9ration d&rsquo;\u00e9nergie, la possibilit\u00e9 de d\u00e9velopper des refroidisseurs thermo\u00e9lectriques \u00e0 base de silicium, ouvrant la voie \u00e0 une possible int\u00e9gration de refroidisseurs thermo\u00e9lectriques dans des dispositifs micro-\u00e9lectroniques \u00e0 base de silicium.<\/p>\n<h4><strong>Abstract:<\/strong><\/h4>\n<p>The blooming of the internet of things (IoT) and wireless sensors nodes seems to be delayed owing to the lack of reliable, safe and low-cost source [Nordrum 2016]. Thermoelectric harvesters feature those key advantages. Silicon presents the advantages to be most abundant, environmental less harmful and to benefit from facilities and technological processes for low cost thermoelectric harvesters mass production compared to the conventional materials (bismuth telluride alloys). However, silicon is a poor thermoelectric material due to its high thermal conductivity (150Wm^(-1) K^(-1)) [Haras et al. 2015]. The possibility to reduce the thermal conductivity while preserving electrical conductivity and Seebeck coefficient is the key to upgrade silicon as an efficient thermoelectric material. To that end, efforts are oriented towards the phononic part of heat transport, which is the dominant contribution in semiconductors [Jin 2014]. The researches carried out during this thesis dealt with the integration phonon engineered silicon membranes [Haras 2016; Lacatena et al. 2014; Tang et al. 2010; Yu et al. 2010] into thermoelectric harvester demonstrators and their characterizations with respect to the state of the art. The studies\u2019 results demonstrated the feasibility of a silicon based thermoelectric harvester exhibiting performances sufficient for autonomous sensor nodes\u2019 power supplying [Vullers et al. 2009] and comparable performances with the bismuth telluride state of the art harvester [Bottner 2005] according to the harvesters\u2019 cooling conditions. Moreover, this thesis demonstrated in addition to the energy harvesting, the possibility of developing silicon based thermoelectric coolers, opening the way to possible integration of thermoelectric coolers in silicon based micro-electronic devices.<\/p>\n<h4><strong>JURY :<\/strong><\/h4>\n<p>&#8211; Emmanuel DUBOIS, Universit\u00e9 de Lille, Directeur de th\u00e8se<\/p>\n<p>&#8211; Thomas SKOTNICKI, Cezamat Varsovie, CoDirecteur de th\u00e8se<\/p>\n<p>&#8211; Jean-Fran\u00e7ois ROBILLARD, IEMN Lille &amp; ISEN Lille, Examinateur<\/p>\n<p>&#8211; St\u00e9phane MONFRAY, STMicroelectronics Crolles, Examinateur<\/p>\n<p>&#8211; Olivier BOURGEOIS, Institut N\u00e9el Grenoble, Rapporteur<\/p>\n<p>&#8211; Sylvie HEBERT, CRISMAT Caen, Rapporteur<\/p>\n<p>&#8211; Edith KUSSENER, IM2NP &amp; ISEN Toulon, Examinateur<\/p>\n<p>&#8211; Guillaume SAVELLI, CEA Grenoble, Examinateur<\/p>\n<\/div><\/section><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[199],"tags":[],"class_list":["post-37470","post","type-post","status-publish","format-standard","hentry","category-these"],"_links":{"self":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/37470","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/comments?post=37470"}],"version-history":[{"count":0,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/posts\/37470\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/media?parent=37470"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/categories?post=37470"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.iemn.fr\/en\/wp-json\/wp\/v2\/tags?post=37470"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}