Exciton dynamics of colloidal semiconductor quantum well stacks

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage367en_US
dc.citation.spage365en_US
dc.contributor.authorErdem, O.en_US
dc.contributor.authorGuzelturk, B.en_US
dc.contributor.authorOlutas M.en_US
dc.contributor.authorKelestemur Y.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2019-02-21T16:04:34Z
dc.date.available2019-02-21T16:04:34Z
dc.date.issued2018en_US
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.abstractColloidal semiconductor nanoplatelets (NPLs) have recently emerged as a new class of colloidal nanocrystals. NPLs are quasi two-dimensional nanocrystals having atomically flat surfaces and have unique properties such as narrow photoluminescence (PL) emission (∼10 nm) and giant oscillator strength. NPLs can be self-assembled into stacks. These are one-dimensional superstructures that can contain tens or hundreds of NPLs in one chain. We studied how stacking modifies the optical properties of NPLs. We found that PL quantum yield and exciton lifetime are reduced with increased degree of stacking in NPL ensembles. Moreover, we showed that temperature-dependent behavior of stacked NPLs is significantly different than the nonstacked ones. We developed two statistical models that account for the ultra-fast nonradiative energy transfer within stacked NPL chains as well as nonemissive subpopulation of NPLs in the ensemble to explain the aforementioned changes when NPLs are stacked.en_US
dc.identifier.doi10.1007/978-94-024-1544-5_20en_US
dc.identifier.eissn1874-6535en_US
dc.identifier.issn1874-6500en_US
dc.identifier.urihttp://hdl.handle.net/11693/50195en_US
dc.language.isoEnglishen_US
dc.publisherSpringer Netherlandsen_US
dc.relation.isversionofhttps://doi.org/10.1007/978-94-024-1544-5_20en_US
dc.source.titleNATO Science for Peace and Security Series B: Physics and Biophysicsen_US
dc.titleExciton dynamics of colloidal semiconductor quantum well stacksen_US
dc.typeBook Chapteren_US

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Department of Electrical and Electronics Engineering
Department of Physics
Institute of Materials Science and Nanotechnology (UNAM)