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Caractérisation et production d’un dispositif électrique à base de graphène

Caractérisation et production d’un dispositif électrique à base de graphène

Alex Aparecido Ferreira / Janaísa Luiza Cristino Lucas

52,97 €
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Editorial:
KS OmniScriptum Publishing
Año de edición:
2024
Materia
Astronomía, espacio y tiempo
ISBN:
9786208263188
52,97 €
IVA incluido
Disponible
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L’objectif général du travail que nous effectuons consiste à fabriquer des dispositifs dans des matériaux bidimensionnels, y compris la lithographie, le dépôt de métal pour les modèles de contact électrique, la caractérisation morphologique et les mesures électriques. L’échantillon a été produit à l’aide d’une méthode appelée Mechanical Cleaving. Cette méthode consiste essentiellement à séparer manuellement les couches empilées d’un cristal de graphite en collant et en décollant le cristal sur un morceau de ruban adhésif. Ce dernier est ensuite fixé au substrat de dioxyde de silicium et pressé manuellement pour que les flocons adhèrent au substrat. Le nombre de couches de l’échantillon a été déterminé par microscopie optique. L’échantillon a également été analysé par spectroscopie Raman. Pour fabriquer les contacts, une LaserWriter LW405 a été utilisée pour la lithographie optique, suivie d’un dépôt de Cr/Au et d’un processus de décollage pour finaliser le dispositif. Notre travail vise à comprendre les caractéristiques de base du transport électrique, le processus de fabrication du dispositif, les mesures électriques et la caractérisation morphologique, ainsi qu’à contribuer aux premières étapes du développement du dispositif.

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