Efficient generation of emissive many-body correlations in copper-doped colloidal quantum wells

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buir.contributor.authorHernandez Martinez, Pedro Ludwig
buir.contributor.authorDelikanlı, Savaş
buir.contributor.authorAltintas, Yemliha
buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidHernandez Martinez, Pedro Ludwig|0000-0001-6158-0430
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage12en_US
dc.citation.issueNumber9en_US
dc.citation.spage1en_US
dc.citation.volumeNumber3en_US
dc.contributor.authorYu, Junhong
dc.contributor.authorSharma, Manoj
dc.contributor.authorLi, Mingjie
dc.contributor.authorLiu, Baiquan
dc.contributor.authorHernández-Martínez, Pedro Ludwig
dc.contributor.authorDelikanli, Savaş
dc.contributor.authorSharma, Ashma
dc.contributor.authorAltintas, Yemliha
dc.contributor.authorHettiarachchi, Chathuranga
dc.contributor.authorSum, Tze Chien
dc.contributor.authorDemir, Hilmi Volkan
dc.contributor.authorDang, Cuong
dc.date.accessioned2023-02-27T17:36:05Z
dc.date.available2023-02-27T17:36:05Z
dc.date.issued2022-09-21
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractColloidal quantum wells (CQWs) provide an appealing platform to achieve emissive many-body correlations for novel optoelectronic devices, given that they act as hosts for strong carrier Coulomb interactions and present suppressed Auger recombination. However, the demonstrated high-order excitonic emission in CQWs requires ultrafast pumping with high excitation levels and can only be spectrally resolved at the single-particle level under cryogenic conditions. Here, through systematic investigation using static power-dependent emission spectroscopy and transient carrier dynamics, we show that Cu-doped CdSe CQWs exhibit continuous-wave-pumped high-order excitonic emission at room temperature with a large binding energy of ∼64 meV. We attribute this unique behavior to dopant excitons in which the ultralong lifetime and the highly localized wavefunction facilitate the formation of many-body correlations. The spectrally resolved high-order excitonic emission generated at power levels compatible with solar irradiation and electrical injection might pave the way for novel solution-processed solid-state devices. © 2022 The Authorsen_US
dc.identifier.doi10.1016/j.xcrp.2022.101049en_US
dc.identifier.issn26663864
dc.identifier.urihttp://hdl.handle.net/11693/111850
dc.language.isoEnglishen_US
dc.publisherCell Pressen_US
dc.relation.isversionofhttps://dx.doi.org/10.1016/j.xcrp.2022.101049en_US
dc.source.titleCell Reports Physical Scienceen_US
dc.subjectColloidal nanocrystalsen_US
dc.subjectColloidal quantum wellsen_US
dc.subjectCopper dopingen_US
dc.subjectHigh-order excitonic statesen_US
dc.subjectUltrafast spectroscopyen_US
dc.titleEfficient generation of emissive many-body correlations in copper-doped colloidal quantum wellsen_US
dc.typeArticleen_US
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Department of Electrical and Electronics Engineering
Department of Physics
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