دورية أكاديمية
أعرض في EDS

From CdSe Nanoplatelets to Quantum Rings by Thermochemical Edge Reconfiguration.

التفاصيل البيبلوغرافية
العنوان: From CdSe Nanoplatelets to Quantum Rings by Thermochemical Edge Reconfiguration.
المؤلفون: Salzmann BBV; Condensed Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508TA Utrecht, The Netherlands., Vliem JF; Condensed Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508TA Utrecht, The Netherlands., Maaskant DN; Condensed Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508TA Utrecht, The Netherlands., Post LC; Condensed Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508TA Utrecht, The Netherlands., Li C; EMAT and Nanolab Centre of Excellence, Antwerp University, 2020 Antwerp, Belgium., Bals S; EMAT and Nanolab Centre of Excellence, Antwerp University, 2020 Antwerp, Belgium., Vanmaekelbergh D; Condensed Matter & Interfaces, Debye Institute for Nanomaterials Science, Utrecht University, 3508TA Utrecht, The Netherlands.
المصدر: Chemistry of materials : a publication of the American Chemical Society [Chem Mater] 2021 Sep 14; Vol. 33 (17), pp. 6853-6859. Date of Electronic Publication: 2021 Aug 24.
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: The Society Country of Publication: United States NLM ID: 9884133 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0897-4756 (Print) Linking ISSN: 08974756 NLM ISO Abbreviation: Chem Mater Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Washington, DC : The Society, c1989-
مستخلص: The variation in the shape of colloidal semiconductor nanocrystals (NCs) remains intriguing. This interest goes beyond crystallography as the shape of the NC determines its energy levels and optoelectronic properties. While thermodynamic arguments point to a few or just a single shape(s), terminated by the most stable crystal facets, a remarkable variation in NC shape has been reported for many different compounds. For instance, for the well-studied case of CdSe, close-to-spherical quantum dots, rods, two-dimensional nanoplatelets, and quantum rings have been reported. Here, we report how two-dimensional CdSe nanoplatelets reshape into quantum rings. We monitor the reshaping in real time by combining atomically resolved structural characterization with optical absorption and photoluminescence spectroscopy. We observe that CdSe units leave the vertical sides of the edges and recrystallize on the top and bottom edges of the nanoplatelets, resulting in a thickening of the rims. The formation of a central hole, rendering the shape into a ring, only occurs at a more elevated temperature.
Competing Interests: The authors declare no competing financial interest.
(© 2021 The Authors. Published by American Chemical Society.)
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تواريخ الأحداث: Date Created: 20210923 Latest Revision: 20210925
رمز التحديث: 20231215
مُعرف محوري في PubMed: PMC8444342
DOI: 10.1021/acs.chemmater.1c01618
PMID: 34552306
قاعدة البيانات: MEDLINE
الوصف
تدمد:0897-4756
DOI:10.1021/acs.chemmater.1c01618