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dc.contributor.authorErdem, Onur
dc.contributor.authorForoutan, Sina
dc.contributor.authorGheshlaghi, Negar
dc.contributor.authorGuzelturk, Burak
dc.contributor.authorAltintas, Yemliha
dc.contributor.authorDemir, Hilmi Volkan
dc.date.accessioned2021-01-26T11:53:44Z
dc.date.available2021-01-26T11:53:44Z
dc.date.issued2020en_US
dc.identifier.issn1530-6992
dc.identifier.issn1530-6984
dc.identifier.otherPubMed ID: 32787166
dc.identifier.urihttps://doi.org/10.1021/acs.nanolett.0c02153
dc.identifier.urihttps://hdl.handle.net/20.500.12573/495
dc.descriptionThe authors acknowledge the financial support from the Singapore National Research Foundation under the program NRF-NRFI2016-08 and in part from TUBITAK 115E679. The authors thank Mr. Mustafa Guler for TEM imaging of the as synthesized NPLs and preparation of the TEM cross-sectional sample, Mr. Semih Bozkurt for his support on the AFM characterization, Dr. Gokce Celik for her help on the ellipsometric analyses and confocal microscopy imaging, Mr. Emre Unal for his assistance in photography of the large -area sample, Mr. Mete Duman for his assistance on the recording of the supplementary video, and Dr. Kivanc Gungor for fruitful discussions. O.E. acknowledges TUBITAK for the financial support through BIDEB 2211 program. H.V.D. gratefully acknowledges support from TUBAen_US
dc.description.abstractWe propose and demonstrate construction of highly uniform, multilayered superstructures of CdSe/CdZnS core/shell colloidal nanoplatelets (NPLs) using liquid interface self-assembly. These NPLs are sequentially deposited onto a solid substrate into slabs having monolayer-precise thickness across tens of cm(2) areas. Because of near-unity surface coverage and excellent uniformity, amplified spontaneous emission (ASE) is observed from an uncharacteristically thin film having 6 NPL layers, corresponding to a mere 42 nm thickness. Furthermore, systematic studies on optical gain of these NPL superstructures having thicknesses ranging from 6 to 15 layers revealed the gradual reduction in gain threshold with increasing number of layers, along with a continuous spectral shift of the ASE peak (similar to 18 nm). These observations can be explained by the change in the optical mode confinement factor with the NPL waveguide thickness and propagation wavelength. This bottom-up construction technique for thickness-tunable, three-dimensional NPL superstructures can be used for large-area device fabrication.en_US
dc.description.abstractSingapore National Research Foundation NRF-NRFI2016-08 Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) 115E679 2211 Turkish Academy of Sciencesen_US
dc.description.sponsorshipSingapore National Research Foundation NRF-NRFI2016-08 Turkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK) 115E679 2211 Turkish Academy of Sciencesen_US
dc.language.isoengen_US
dc.publisherAMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USAen_US
dc.relation.isversionof10.1021/acs.nanolett.0c02153en_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectamplified spontaneous emissionen_US
dc.subjectoptical gainen_US
dc.subjectplanar waveguidesen_US
dc.subjectcolloidal nanoplateletsen_US
dc.subjectliquid interface self-assemblyen_US
dc.titleThickness-Tunable Self-Assembled Colloidal Nanoplatelet Films Enable Ultrathin Optical Gain Mediaen_US
dc.typearticleen_US
dc.contributor.departmentAGÜ, Mühendislik Fakültesi, Malzeme Bilimi ve Nanoteknoloji Mühendisliği Bölümüen_US
dc.contributor.authorID0000-0003-0623-8987en_US
dc.contributor.authorID0000-0003-1793-112Xen_US
dc.contributor.authorID0000-0003-2212-965Xen_US
dc.identifier.volumeVolume: 20en_US
dc.identifier.issue9 Pagesen_US
dc.identifier.startpage6459en_US
dc.identifier.endpage6465en_US
dc.relation.journalNANO LETTERSen_US
dc.relation.tubitak115E679 2211
dc.relation.publicationcategoryMakale - Uluslararası - Editör Denetimli Dergien_US


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