Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/82162
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Applied Physics | - |
dc.creator | Zhou, L | en_US |
dc.creator | Sun, C | en_US |
dc.creator | Li, X | en_US |
dc.creator | Tang, L | en_US |
dc.creator | Guo, W | en_US |
dc.creator | Luo, L | en_US |
dc.creator | Zhang, M | en_US |
dc.creator | Teng, KS | en_US |
dc.creator | Qian, F | en_US |
dc.creator | Lu, C | en_US |
dc.creator | Liang, J | en_US |
dc.creator | Yao, Y | en_US |
dc.creator | Lau, SP | en_US |
dc.date.accessioned | 2020-05-05T05:58:55Z | - |
dc.date.available | 2020-05-05T05:58:55Z | - |
dc.identifier.issn | 1931-7573 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/82162 | - |
dc.language.iso | en | en_US |
dc.publisher | Springer | en_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.rights | The 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/s11671-020-3250-1 | en_US |
dc.subject | First-principle | en_US |
dc.subject | Modulating bandgap | en_US |
dc.subject | Quantum dots | en_US |
dc.subject | Transition metal dichalcogenides | en_US |
dc.subject | Ultrasonic method | en_US |
dc.title | Tantalum disulfide quantum dots : preparation, structure, and properties | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 15 | en_US |
dc.identifier.issue | 1 | en_US |
dc.identifier.doi | 10.1186/s11671-020-3250-1 | en_US |
dcterms.abstract | Abstract: 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.accessRights | open access | en_US |
dcterms.bibliographicCitation | Nanoscale research letters, 2020, v. 15, no. 1, 20 | en_US |
dcterms.isPartOf | Nanoscale research letters | en_US |
dcterms.issued | 2020 | - |
dc.identifier.isi | WOS:000513558500001 | - |
dc.identifier.scopus | 2-s2.0-85078478812 | - |
dc.identifier.eissn | 1556-276X | en_US |
dc.identifier.artn | 20 | en_US |
dc.description.validate | 202006 bcma | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | OA_Scopus/WOS | en_US |
dc.description.pubStatus | Published | en_US |
Appears in Collections: | Journal/Magazine Article |
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Zhou_Tantalum_disulfide_quantum.pdf | 2.22 MB | Adobe PDF | View/Open |
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