All-optical control of exciton flow in a colloidal quantum well complex

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buir.contributor.authorSharma, Manoj
buir.contributor.authorDelikanlı, Savaş
buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage8en_US
dc.citation.issueNumber1en_US
dc.citation.spage1en_US
dc.citation.volumeNumber9en_US
dc.contributor.authorYu, J.
dc.contributor.authorSharma, Manoj
dc.contributor.authorSharma, A.
dc.contributor.authorDelikanlı, Savaş
dc.contributor.authorDemir, Hilmi Volkan
dc.contributor.authorDang, C.
dc.date.accessioned2021-03-01T12:42:09Z
dc.date.available2021-03-01T12:42:09Z
dc.date.issued2020
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentDepartment of Physicsen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractExcitonics, an alternative to romising for processing information since semiconductor electronics is rapidly approaching the end of Moore’s law. Currently, the development of excitonic devices, where exciton flow is controlled, is mainly focused on electric-field modulation or exciton polaritons in high-Q cavities. Here, we show an all-optical strategy to manipulate the exciton flow in a binary colloidal quantum well complex through mediation of the Förster resonance energy transfer (FRET) by stimulated emission. In the spontaneous emission regime, FRET naturally occurs between a donor and an acceptor. In contrast, upon stronger excitation, the ultrafast consumption of excitons by stimulated emission effectively engineers the excitonic flow from the donors to the acceptors. Specifically, the acceptors’ stimulated emission significantly accelerates the exciton flow, while the donors’ stimulated emission almost stops this process. On this basis, a FRET-coupled rate equation model is derived to understand the controllable exciton flow using the density of the excited donors and the unexcited acceptors. The results will provide an effective all-optical route for realizing excitonic devices under room temperature operation.en_US
dc.description.provenanceSubmitted by Zeynep Aykut (zeynepay@bilkent.edu.tr) on 2021-03-01T12:42:09Z No. of bitstreams: 1 All_optical_control_of_exciton_flow_in_a_colloidal_quantum_well_complex.pdf: 1189493 bytes, checksum: cf6cd22b05becd967a519106100f956c (MD5)en
dc.description.provenanceMade available in DSpace on 2021-03-01T12:42:09Z (GMT). No. of bitstreams: 1 All_optical_control_of_exciton_flow_in_a_colloidal_quantum_well_complex.pdf: 1189493 bytes, checksum: cf6cd22b05becd967a519106100f956c (MD5) Previous issue date: 2020en
dc.identifier.doi10.1038/s41377-020-0262-7en_US
dc.identifier.issn2095-5545
dc.identifier.urihttp://hdl.handle.net/11693/75680
dc.language.isoEnglishen_US
dc.publisherSpringer Natureen_US
dc.relation.isversionofhttps://dx.doi.org/10.1038/s41377-020-0262-7en_US
dc.source.titleLight: Science and Applicationsen_US
dc.titleAll-optical control of exciton flow in a colloidal quantum well complexen_US
dc.typeArticleen_US

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