Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/82162
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dc.contributorDepartment of Applied Physics-
dc.creatorZhou, Len_US
dc.creatorSun, Cen_US
dc.creatorLi, Xen_US
dc.creatorTang, Len_US
dc.creatorGuo, Wen_US
dc.creatorLuo, Len_US
dc.creatorZhang, Men_US
dc.creatorTeng, KSen_US
dc.creatorQian, Fen_US
dc.creatorLu, Cen_US
dc.creatorLiang, Jen_US
dc.creatorYao, Yen_US
dc.creatorLau, SPen_US
dc.date.accessioned2020-05-05T05:58:55Z-
dc.date.available2020-05-05T05:58:55Z-
dc.identifier.issn1931-7573en_US
dc.identifier.urihttp://hdl.handle.net/10397/82162-
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.rights© The Author(s). 2020 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.en_US
dc.rightsThe following publication Zhou, L., Sun, C., Li, X. et al. Tantalum disulfide quantum dots: preparation, structure, and properties. Nanoscale Res Lett 15, 20 (2020), is available at https://doi.org/10.1186/s11671-020-3250-1en_US
dc.subjectFirst-principleen_US
dc.subjectModulating bandgapen_US
dc.subjectQuantum dotsen_US
dc.subjectTransition metal dichalcogenidesen_US
dc.subjectUltrasonic methoden_US
dc.titleTantalum disulfide quantum dots : preparation, structure, and propertiesen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.volume15en_US
dc.identifier.issue1en_US
dc.identifier.doi10.1186/s11671-020-3250-1en_US
dcterms.abstractAbstract: Tantalum disulfide (TaS2) two-dimensional film material has attracted wide attention due to its unique optical and electrical properties. In this work, we report the preparation of 1 T-TaS2 quantum dots (1 T-TaS2 QDs) by top-down method. Herein, we prepared the TaS2 QDs having a monodisperse grain size of around 3 nm by an effective ultrasonic liquid phase exfoliation method. Optical studies using UV-Vis, PL, and PLE techniques on the as-prepared TaS2 QDs exhibited ultraviolet absorption at 283 nm. Furthermore, we found that dimension reduction of TaS2 has led to a modification of the band gap, namely a transition from indirect to direct band gap, which is explained using first-principle calculations. By using quinine as reference, the fluorescence quantum yield is 45.6%. Therefore, our results suggest TaS2 QDs have unique and extraordinary optical properties. Moreover, the low-cost, facile method of producing high quality TaS2 QDs in this work is ideal for mass production to ensure commercial viability of devices based on this material. Graphical abstract: TaS2 quantum dots having a monodisperse grain size of around 3 nm have been prepared by an ultrasonic liquid phase exfoliation method, it has been found that the dimension reduction of TaS2 has led to a transition from indirect to direct band gap that results in the unique and extraordinary optical properties (PL QY: 45.6%).[Figure not available: see fulltext.].-
dcterms.accessRightsopen accessen_US
dcterms.bibliographicCitationNanoscale research letters, 2020, v. 15, no. 1, 20en_US
dcterms.isPartOfNanoscale research lettersen_US
dcterms.issued2020-
dc.identifier.isiWOS:000513558500001-
dc.identifier.scopus2-s2.0-85078478812-
dc.identifier.eissn1556-276Xen_US
dc.identifier.artn20en_US
dc.description.validate202006 bcma-
dc.description.oaVersion of Recorden_US
dc.identifier.FolderNumberOA_Scopus/WOSen_US
dc.description.pubStatusPublisheden_US
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