{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1360013168741614464.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1038/s41563-021-01074-4"}},{"identifier":{"@type":"URI","@value":"https://www.nature.com/articles/s41563-021-01074-4.pdf"}},{"identifier":{"@type":"URI","@value":"https://www.nature.com/articles/s41563-021-01074-4"}},{"identifier":{"@type":"DOI","@value":"10.21203/rs.3.rs-102201/v1"}},{"identifier":{"@type":"URI","@value":"https://www.researchsquare.com/article/rs-102201/v1"}},{"identifier":{"@type":"URI","@value":"https://www.researchsquare.com/article/rs-102201/v1.html"}},{"identifier":{"@type":"DOI","@value":"10.48550/arxiv.2010.15883"}},{"identifier":{"@type":"PMID","@value":"34489566"}}],"resourceType":"学術雑誌論文(journal article)","dc:title":[{"@value":"Two-dimensional hole gas in organic semiconductors"}],"description":[{"type":"abstract","notation":[{"@value":"<title>Abstract</title>\n        <p>A highly conductive metallic gas that is quantum mechanically confined at a solid-state interface is an ideal platform to explore nontrivial electronic states that are otherwise inaccessible in bulk materials. Although two-dimensional electron gas (2DEG) has been realized in conventional semiconductor interfaces, examples of two-dimensional hole gas (2DHG), which is the counter analogue of 2DEG, are still limited. Here, we report the observation of a 2DHG in solution-processed organic semiconductors in conjunction with an electric double-layer using ionic liquids. A molecularly flat single crystal of high mobility organic semiconductors serves as a defect-free interface that facilitates two-dimensional confinement of high-density holes. Remarkably low sheet resistance of 6 kΩ and high hole gas density of 10<sup>14</sup> cm<sup>14</sup> result in a metal-insulator transition at ambient pressure. The measured degenerated holes in the organic semiconductors provide a broad opportunity to tailor low-dimensional electronic states using molecularly engineered heterointerfaces.</p>"}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1380013168741614475","@type":"Researcher","foaf:name":[{"@value":"Naotaka Kasuya"}]},{"@id":"https://cir.nii.ac.jp/crid/1380013168741614472","@type":"Researcher","foaf:name":[{"@value":"Junto Tsurumi"}]},{"@id":"https://cir.nii.ac.jp/crid/1380013168741614610","@type":"Researcher","foaf:name":[{"@value":"Toshihiro Okamoto"}]},{"@id":"https://cir.nii.ac.jp/crid/1420845751139963648","@type":"Researcher","personIdentifier":[{"@type":"KAKEN_RESEARCHERS","@value":"40716718"},{"@type":"NRID","@value":"1000040716718"}],"foaf:name":[{"@value":"Shun Watanabe"}]},{"@id":"https://cir.nii.ac.jp/crid/1380013168741614467","@type":"Researcher","foaf:name":[{"@value":"Jun Takeya"}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"14761122"},{"@type":"EISSN","@value":"14764660"}],"prism:publicationName":[{"@value":"Nature Materials"}],"dc:publisher":[{"@value":"Springer Science and Business Media LLC"}],"prism:publicationDate":"2021-09-06","prism:volume":"20","prism:number":"10","prism:startingPage":"1401","prism:endingPage":"1406"},"reviewed":"false","dc:rights":["https://www.springer.com/tdm","https://www.springer.com/tdm"],"url":[{"@id":"https://www.nature.com/articles/s41563-021-01074-4.pdf"},{"@id":"https://www.nature.com/articles/s41563-021-01074-4"},{"@id":"https://www.researchsquare.com/article/rs-102201/v1"},{"@id":"https://www.researchsquare.com/article/rs-102201/v1.html"}],"createdAt":"2021-09-06","modifiedAt":"2022-07-06","foaf:topic":[{"@id":"https://cir.nii.ac.jp/all?q=Condensed%20Matter%20-%20Materials%20Science","dc:title":"Condensed Matter - Materials 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mechano-electronics"}]},{"@id":"https://cir.nii.ac.jp/crid/1040285300694382336","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"20H00387"},{"@type":"JGN","@value":"JP20H00387"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20H00387/"}],"notation":[{"@language":"ja","@value":"有機半導体を用いたスピンオービトロニクスの創成"},{"@language":"en","@value":"Organic Semiconductor spinorbitronics"}]},{"@id":"https://cir.nii.ac.jp/crid/1040285300706352640","@type":"Project","projectIdentifier":[{"@type":"KAKEN","@value":"20K20562"},{"@type":"JGN","@value":"JP20K20562"},{"@type":"URI","@value":"https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20K20562/"}],"notation":[{"@language":"ja","@value":"高分子超伝導の実現"},{"@language":"en","@value":"Development of polymeric superconductor"}]}],"relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050289951134505856","@type":"Article","resourceType":"学術雑誌論文(journal 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