Continuously tunable emission in inverted type ‐ I CdS/CdSe core/crown semiconductor nanoplatelets

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buir.contributor.authorDemir, Hilmi Volkan
buir.contributor.orcidDemir, Hilmi Volkan|0000-0003-1793-112X
dc.citation.epage4289en_US
dc.citation.issueNumber27en_US
dc.citation.spage4282en_US
dc.citation.volumeNumber25en_US
dc.contributor.authorDelikanlı, S.en_US
dc.contributor.authorGüzeltürk, B.en_US
dc.contributor.authorHernandez - Martinez, P. L.en_US
dc.contributor.authorErdem, T.en_US
dc.contributor.authorKeleştemur, Y.en_US
dc.contributor.authorOlutas M.en_US
dc.contributor.authorAkgül, M. Z.en_US
dc.contributor.authorDemir, Hilmi Volkanen_US
dc.date.accessioned2015-07-28T12:03:27Z
dc.date.available2015-07-28T12:03:27Z
dc.date.issued2015-07-15en_US
dc.departmentDepartment of Physicsen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.departmentInstitute of Materials Science and Nanotechnology (UNAM)en_US
dc.description.abstractThe synthesis and unique tunable optical properties of core/crown nanoplatelets having an inverted Type-I heterostructure are presented. Here, colloidal 2D CdS/CdSe heteronanoplatelets are grown with thickness of four monolayers using seed-mediated method. In this work, it is shown that the emission peak of the resulting CdS/CdSe heteronanoplatelets can be continuously spectrally tuned between the peak emission wavelengths of the core only CdS nanoplatelets (421 nm) and CdSe nanoplatelets (515 nm) having the same vertical thickness. In these inverted Type-I nanoplatelets, the unique continuous tunable emission is enabled by adjusting the lateral width of the CdSe crown, having a narrower bandgap, around the core CdS nanoplatelet, having a wider bandgap, as a result of the controlled lateral quantum confinement in the crown region additional to the pure vertical confinement. As a proof-of-concept demonstration, a white light generation is shown by using color conversion with these CdS/CdSe heteronanoplatelets having finely tuned thin crowns, resulting in a color rendering index of 80. The robust control of the electronic structure in such inverted Type-I heteronanoplatelets achieved by tailoring the lateral extent of the crown coating around the core template presents a new enabling pathway for bandgap engineering in solution-processed quantum wells.en_US
dc.description.provenanceMade available in DSpace on 2015-07-28T12:03:27Z (GMT). No. of bitstreams: 1 11561.pdf: 1462744 bytes, checksum: d8fe950d267a14a807fe5e88529e00dc (MD5)en
dc.identifier.doi10.1002/adfm.201500403en_US
dc.identifier.issn1616-301X
dc.identifier.urihttp://hdl.handle.net/11693/12851
dc.language.isoEnglishen_US
dc.publisherWileyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1002/adfm.201500403en_US
dc.source.titleAdvanced functional materialsen_US
dc.subjectNanocrystal quantum dotsen_US
dc.subjectSensitized solar - cellsen_US
dc.subjectCore/shell nanocrystalsen_US
dc.subjectCdse nanocrystalsen_US
dc.subjectColloidal nanoplateletsen_US
dc.subjectWell systemen_US
dc.subjectGrowthen_US
dc.subjectSpectroscopyen_US
dc.subjectCds/hgs/cdsen_US
dc.subjectThicknessen_US
dc.titleContinuously tunable emission in inverted type ‐ I CdS/CdSe core/crown semiconductor nanoplateletsen_US
dc.typeArticleen_US

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