Near-Infrared-Emitting five-monolayer thick copper-doped CdSe nanoplatelets

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buir.contributor.authorSharma, Ashma
buir.contributor.authorSharma, Manoj
buir.contributor.authorGüngör, Kıvanç
buir.contributor.authorOlutaş, Murat
buir.contributor.authorDede, Didem
buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage1900831-8en_US
dc.citation.issueNumber22en_US
dc.citation.spage1900831-1en_US
dc.citation.volumeNumber7en_US
dc.contributor.authorSharma, Ashmaen_US
dc.contributor.authorSharma, Manojen_US
dc.contributor.authorGüngör, Kıvançen_US
dc.contributor.authorOlutaş, Muraten_US
dc.contributor.authorDede, Didemen_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2020-02-10T06:24:01Z
dc.date.available2020-02-10T06:24:01Z
dc.date.issued2019
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.abstractDoped nanocrystals are instrumental to the high‐performance luminescent solar concentrators (LSCs) and the color conversion devices. Recently, copper (Cu)‐doped three and four monolayer (ML) thick CdSe nanoplatelets (NPLs) have been shown superior to the existing Cu‐doped quantum dots (QDs) for their use in LSCs. However, additional improvement in the LSC performance can be achieved by further redshifting the emission into the near‐infrared (NIR) region of electromagnetic spectrum and increasing the absorbed portion of the solar irradiation. Cu‐doping into higher thicknesses of these atomically flat NPLs (e.g., ≥5 ML) can achieve these overarching goals. However, addition of the dopant ions during the nucleation stage disturbs this high‐temperature growth process and leads to multiple populations of NPLs and QDs. Here, by carefully controlling the precursor chemistry the successful doping of Cu in five ML thick NPLs by high‐temperature nucleation doping method is demonstrated. The optimized synthesis method shows nearly pure population of doped five ML thick NPLs, which possess ≈150 nm Stokes‐shifted NIR emission with high quantum yield of 65 ± 2%. Structural, elemental, and optical studies are conducted to confirm the successful doping and understand the detailed photophysics. Finally, these materials are tested experimentally and theoretically for their performance as promising LSC materials.en_US
dc.description.provenanceSubmitted by Onur Emek (onur.emek@bilkent.edu.tr) on 2020-02-10T06:24:01Z No. of bitstreams: 1 Bilkent-research-paper.pdf: 268963 bytes, checksum: ad2e3a30c8172b573b9662390ed2d3cf (MD5)en
dc.description.provenanceMade available in DSpace on 2020-02-10T06:24:01Z (GMT). No. of bitstreams: 1 Bilkent-research-paper.pdf: 268963 bytes, checksum: ad2e3a30c8172b573b9662390ed2d3cf (MD5) Previous issue date: 2019en
dc.description.sponsorshipSingapore National Research Foundation. Grant Number: NRF‐NRFI2016‐08en_US
dc.description.sponsorshipESF‐EURYIen_US
dc.description.sponsorshipTUBA‐GEBIPen_US
dc.embargo.release2020-11-19
dc.identifier.doi10.1002/adom.201900831en_US
dc.identifier.issn2195-1071
dc.identifier.urihttp://hdl.handle.net/11693/53203
dc.language.isoEnglishen_US
dc.publisherWILEY-VCH Verlag GmbH & Co. KGaA, Weinheimen_US
dc.relation.isversionofhttps://doi.org/10.1002/adom.201900831en_US
dc.source.titleAdvanced Optical Materialsen_US
dc.subjectCdSe nanoplateletsen_US
dc.subjectColloidal quantum wellsen_US
dc.subjectCopperen_US
dc.subjectDopingen_US
dc.subjectLuminescent solar concentratorsen_US
dc.subjectNear‐infrared emissionen_US
dc.subjectStokes shiften_US
dc.titleNear-Infrared-Emitting five-monolayer thick copper-doped CdSe nanoplateletsen_US
dc.typeArticleen_US

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