{"id":10621,"date":"2022-05-09T09:44:37","date_gmt":"2022-05-09T07:44:37","guid":{"rendered":"https:\/\/ggba.swiss\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/"},"modified":"2023-07-04T13:43:55","modified_gmt":"2023-07-04T11:43:55","slug":"des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires","status":"publish","type":"post","link":"https:\/\/ggba.swiss\/fr\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/","title":{"rendered":"Des scientifiques de l’EPFL am\u00e9liorent l’efficacit\u00e9 des cellules solaires"},"content":{"rendered":"\n

Les cellules solaires en silicium sont largement r\u00e9pandues, mais leurs rendements de conversion de puissance sont limit\u00e9s. Ces rendements plafonneront probablement \u00e0 environ 27 % dans un avenir pr\u00e9visible, en raison de limites thermodynamiques fondamentales. Les modules int\u00e9grant ces cellules solaires auront des rendements maximums d’environ 23-25%.<\/p>\n

Toutefois, ces limites peuvent \u00eatre surmont\u00e9es en combinant le silicium avec une cellule solaire compl\u00e9mentaire qui absorbe la partie bleue-verte du spectre solaire et l’utilise plus efficacement, formant ce qui est appel\u00e9 un \u00ab\u00a0tandem\u00a0\u00bb. Parmi les diff\u00e9rents mat\u00e9riaux pouvant \u00eatre utilis\u00e9s pour un tandem, les p\u00e9rovskites \u00e0 base d’halog\u00e9nure se sont r\u00e9cemment r\u00e9v\u00e9l\u00e9es \u00eatre les plus adapt\u00e9es pour augmenter l’efficacit\u00e9 du silicium sans ajouter de co\u00fbts de fabrication substantiels.<\/p>\n

A Neuch\u00e2tel, des scientifiques du Laboratoire de photovolta\u00efque et d’\u00e9lectronique en couches minces (PV-lab<\/a>) de l’EPFL<\/a> ont mis au point une m\u00e9thode pour faire cro\u00eetre de mani\u00e8re uniforme des couches de p\u00e9rovskite sur du silicium textur\u00e9. Les chercheurs ont am\u00e9lior\u00e9 le processus de cristallisation de la p\u00e9rovskite et d\u00e9velopp\u00e9 des couches hautement transparentes, ce qui a permis de cr\u00e9er des cellules solaires tandem avec un rendement de 29,2% sur une surface de 1 cm2<\/sup>.<\/p>\n

Ce rendement a \u00e9t\u00e9 certifi\u00e9 par l\u2019institut ind\u00e9pendant Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE<\/a>) en Allemagne, ce qui repr\u00e9sente un nouveau record mondial pour un dispositif silicium-p\u00e9rovskite enti\u00e8rement textur\u00e9.<\/p>\n

Des perspectives prometteuses de r\u00e9duction des co\u00fbts de la transition \u00e9nerg\u00e9tique<\/h4>\n

Les chercheurs voient d\u00e9j\u00e0 la possibilit\u00e9 d’atteindre des rendements sup\u00e9rieurs \u00e0 30 % en tirant parti du courant \u00e9lev\u00e9 fourni par la texture du silicium.<\/p>\n

\u00ab Plusieurs ann\u00e9es de R&D sont encore n\u00e9cessaires pour mettre sur le march\u00e9 une telle technologie et de tels proc\u00e9d\u00e9s de fabrication \u00bb, a d\u00e9clar\u00e9 Christophe Ballif, responsable du PV-lab de l’EPFL. \u00ab Un grand d\u00e9fi sera de d\u00e9velopper des cellules solaires qui pourront rester stables sur nos toits pendant plus de 25 ans. Mais le rendement sup\u00e9rieur que nous avons d\u00e9montr\u00e9 sans changer la texture frontale sera tr\u00e8s int\u00e9ressant pour l’industrie photovolta\u00efque. \u00bb<\/p>\n

Cette d\u00e9couverte est tr\u00e8s prometteuse pour r\u00e9duire le co\u00fbt de production d’\u00e9lectricit\u00e9 au kWh, en produisant plus d’\u00e9nergie sur une m\u00eame surface.<\/p>\n","protected":false},"excerpt":{"rendered":"

A Neuch\u00e2tel, des scientifiques de l’EPFL ont mis au point une cellule solaire tandem capable de fournir un rendement certifi\u00e9 de 29,2% en combinant une cellule solaire en p\u00e9rovskite avec une cellule solaire en silicium textur\u00e9.<\/p>\n","protected":false},"author":3,"featured_media":10622,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"mc4wp_mailchimp_campaign":[],"footnotes":""},"categories":[844],"tags":[1039,1078,1081],"class_list":["post-10621","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cleantech","tag-energy-fr","tag-solar-energy-fr","tag-sustainability-fr"],"acf":[],"yoast_head":"\nDes scientifiques de l'EPFL am\u00e9liorent l'efficacit\u00e9 des cellules solaires - Greater Geneva Bern area<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/ggba.swiss\/fr\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Des scientifiques de l'EPFL am\u00e9liorent l'efficacit\u00e9 des cellules solaires - Greater Geneva Bern area\" \/>\n<meta property=\"og:description\" content=\"A Neuch\u00e2tel, des scientifiques de l'EPFL ont mis au point une cellule solaire tandem capable de fournir un rendement certifi\u00e9 de 29,2% en combinant une cellule solaire en p\u00e9rovskite avec une cellule solaire en silicium textur\u00e9.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/ggba.swiss\/fr\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/\" \/>\n<meta property=\"og:site_name\" content=\"Greater Geneva Bern area\" \/>\n<meta property=\"article:published_time\" content=\"2022-05-09T07:44:37+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-07-04T11:43:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/staging.ggba.swiss\/app\/uploads\/2023\/06\/EPFL-Solar-Cells-630x380-1-2.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"630\" \/>\n\t<meta property=\"og:image:height\" content=\"380\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"mathieu\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"mathieu\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/ggba.swiss\/fr\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/ggba.swiss\/fr\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/\"},\"author\":{\"name\":\"mathieu\",\"@id\":\"https:\/\/staging.ggba.swiss\/en\/#\/schema\/person\/de091cdfd7d8bce46f9b8b1cf9d868ab\"},\"headline\":\"Des scientifiques de l’EPFL am\u00e9liorent l’efficacit\u00e9 des cellules solaires\",\"datePublished\":\"2022-05-09T07:44:37+00:00\",\"dateModified\":\"2023-07-04T11:43:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/ggba.swiss\/fr\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/\"},\"wordCount\":418,\"image\":{\"@id\":\"https:\/\/ggba.swiss\/fr\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/ggba.swiss\/app\/uploads\/2023\/06\/EPFL-Solar-Cells-630x380-1-2.jpeg\",\"keywords\":[\"Energy\",\"Solar Energy\",\"Sustainability\"],\"articleSection\":[\"Cleantech\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/ggba.swiss\/fr\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/\",\"url\":\"https:\/\/ggba.swiss\/fr\/des-scientifiques-de-lepfl-ameliorent-lefficacite-des-cellules-solaires\/\",\"name\":\"Des scientifiques de l'EPFL am\u00e9liorent l'efficacit\u00e9 des cellules solaires - 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