Spectrally wide-range-tunable, efficient, and bright colloidal light-emitting diodes of quasi-2D nanoplatelets enabled by engineered alloyed heterostructures

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buir.contributor.authorAltıntaş, Yemliha
buir.contributor.authorGheshlaghi, Negar
buir.contributor.authorShabani, Farzan
buir.contributor.authorSharma, Manoj
buir.contributor.authorMutlugün, Evren
buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage7883en_US
dc.citation.issueNumber18en_US
dc.citation.spage7874en_US
dc.citation.volumeNumber32en_US
dc.contributor.authorAltıntaş, Yemliha
dc.contributor.authorLiu, B.
dc.contributor.authorHernández-Martínez, P. L.
dc.contributor.authorGheshlaghi, Negar
dc.contributor.authorShabani, Farzan
dc.contributor.authorSharma, Manoj
dc.contributor.authorWang, L.
dc.contributor.authorSun, H.
dc.contributor.authorMutlugün, Evren
dc.contributor.authorDemir, Hilmi Volkan
dc.date.accessioned2021-02-17T10:08:18Z
dc.date.available2021-02-17T10:08:18Z
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.abstractRecently, there has been tremendous interest in the synthesis and optoelectronic applications of quasi-two-dimensional colloidal nanoplatelets (NPLs). Thanks to the ultranarrow emission linewidth, high-extinction coefficient, and high photostability, NPLs offer an exciting opportunity for high-performance optoelectronics. However, until now, the applications of these NPLs are limited to available discrete emission ranges, limiting the full potential of these exotic materials as efficient light emitters. Here, we introduce a detailed systematic study on the synthesis of NPLs based on the alloying mechanisms in core/shell, core/alloyed shell, alloyed core/shell, and alloyed core/alloyed shell heterostructures. Through the engineering of the band gap supported by the theoretical calculations, we carefully designed and successfully synthesized the NPL emitters with continuously tunable emission. Unlike conventional NPLs showing discrete emission, here, we present highly efficient core/shell NPLs with fine spectral tunability from green to deep-red spectra. As an important demonstration of these efficient emitters, the first-time implementation of yellow NPL light-emitting diodes (LEDs) has been reported with record device performance, including the current efficiency surpassing 18.2 cd A–1, power efficiency reaching 14.8 lm W–1, and record luminance exceeding 46 900 cd m–2. This fine and wide-range color tunability in the visible range from stable and efficient core/shell NPLs is expected to be extremely important for the optoelectronic applications of the family of colloidal NPL emitters.en_US
dc.description.provenanceSubmitted by Evrim Ergin (eergin@bilkent.edu.tr) on 2021-02-17T10:08:18Z No. of bitstreams: 1 Spectrally_wide-range-tunable_efficient_and_bright_colloidal_light-emitting_diodes_of_quasi-2D_nanoplatelets_enabled_by_engineered_alloyed_heterostructures.pdf: 3295830 bytes, checksum: cb75a478df63cf9420acf63403f829c6 (MD5)en
dc.description.provenanceMade available in DSpace on 2021-02-17T10:08:18Z (GMT). No. of bitstreams: 1 Spectrally_wide-range-tunable_efficient_and_bright_colloidal_light-emitting_diodes_of_quasi-2D_nanoplatelets_enabled_by_engineered_alloyed_heterostructures.pdf: 3295830 bytes, checksum: cb75a478df63cf9420acf63403f829c6 (MD5) Previous issue date: 2020-08en
dc.identifier.doi10.1021/acs.chemmater.0c02630en_US
dc.identifier.issn08974756
dc.identifier.urihttp://hdl.handle.net/11693/75135
dc.language.isoEnglishen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.isversionofhttps://dx.doi.org/10.1021/acs.chemmater.0c02630en_US
dc.source.titleChemistry of Materialsen_US
dc.titleSpectrally wide-range-tunable, efficient, and bright colloidal light-emitting diodes of quasi-2D nanoplatelets enabled by engineered alloyed heterostructuresen_US
dc.typeArticleen_US

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