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dc.contributor.author
Leng, Kai
dc.contributor.author
Wang, Lin
dc.contributor.author
Shao, Yan
dc.contributor.author
Abdelwahab, Ibrahim
dc.contributor.author
Grinblat, Gustavo Sergio
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dc.contributor.author
Verzhbitskiy, Ivan
dc.contributor.author
Li, Runlai
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Cai, Yongqing
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Chi, Xiao
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Fu, Wei
dc.contributor.author
Song, Peng
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Rusydi, Andrivo
dc.contributor.author
Eda, Goki
dc.contributor.author
Maier, Stefan A.
dc.contributor.author
Loh, Kian Ping
dc.date.available
2021-11-03T14:39:19Z
dc.date.issued
2020-10
dc.identifier.citation
Leng, Kai; Wang, Lin; Shao, Yan; Abdelwahab, Ibrahim; Grinblat, Gustavo Sergio; et al.; Electron tunneling at the molecularly thin 2D perovskite and graphene van der Waals interface; Nature Publishing Group; Nature Communications; 11; 1; 10-2020; 1-8
dc.identifier.issn
2041-1723
dc.identifier.uri
http://hdl.handle.net/11336/145819
dc.description.abstract
Quasi-two-dimensional perovskites have emerged as a new material platform for optoelectronics on account of its intrinsic stability. A major bottleneck to device performance is the high charge injection barrier caused by organic molecular layers on its basal plane, thus the best performing device currently relies on edge contact. Herein, by leveraging on van der Waals coupling and energy level matching between two-dimensional Ruddlesden-Popper perovskite and graphene, we show that the plane-contacted perovskite and graphene interface presents a lower barrier than gold for charge injection. Electron tunneling across the interface occurs via a gate-tunable, direct tunneling-to-field emission mechanism with increasing bias, and photoinduced charge transfer occurs at femtosecond timescale (~50 fs). Field effect transistors fabricated on molecularly thin Ruddlesden-Popper perovskite using graphene contact exhibit electron mobilities ranging from 0.1 to 0.018 cm2V−1s−1 between 1.7 to 200 K. Scanning tunneling spectroscopy studies reveal layer-dependent tunneling barrier and domain size on few-layered Ruddlesden-Popper perovskite.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Nature Publishing Group
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by/2.5/ar/
dc.subject
Graphene
dc.subject
2D Hybrid perovskites
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Tunneling
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Pump/probe spectroscopy
dc.subject.classification
Nano-materiales
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dc.subject.classification
Nanotecnología
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dc.subject.classification
INGENIERÍAS Y TECNOLOGÍAS
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dc.title
Electron tunneling at the molecularly thin 2D perovskite and graphene van der Waals interface
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-09-07T18:23:39Z
dc.journal.volume
11
dc.journal.number
1
dc.journal.pagination
1-8
dc.journal.pais
Reino Unido
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dc.description.fil
Fil: Leng, Kai. National University Of Singapore; Singapur
dc.description.fil
Fil: Wang, Lin. National University Of Singapore; Singapur
dc.description.fil
Fil: Shao, Yan. National University Of Singapore; Singapur
dc.description.fil
Fil: Abdelwahab, Ibrahim. National University Of Singapore; Singapur
dc.description.fil
Fil: Grinblat, Gustavo Sergio. Imperial College London; Reino Unido. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Física de Buenos Aires. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Física de Buenos Aires; Argentina
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Fil: Verzhbitskiy, Ivan. National University Of Singapore; Singapur
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Fil: Li, Runlai. National University Of Singapore; Singapur
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Fil: Cai, Yongqing. University Of Macau; China
dc.description.fil
Fil: Chi, Xiao. National University Of Singapore; Singapur
dc.description.fil
Fil: Fu, Wei. National University Of Singapore; Singapur
dc.description.fil
Fil: Song, Peng. National University Of Singapore; Singapur
dc.description.fil
Fil: Rusydi, Andrivo. National University Of Singapore; Singapur
dc.description.fil
Fil: Eda, Goki. National University Of Singapore; Singapur
dc.description.fil
Fil: Maier, Stefan A.. Ludwig Maximilians Universitat; Alemania
dc.description.fil
Fil: Loh, Kian Ping. National University Of Singapore; Singapur
dc.journal.title
Nature Communications
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.nature.com/articles/s41467-020-19331-6
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1038/s41467-020-19331-6
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