ArticleChemistry of materials : a publication of the American Chemical Society2021
From CdSe Nanoplatelets to Quantum Rings by Thermochemical Edge Reconfiguration.
Article in Chemistry of materials : a publication of the American Chemical Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed.
- Approaches to Enhance the Stability of Colloidal Quantum Well Light-Emitting Diodes.Recent patents on nanotechnology · 2025Article
- Topological Bardeen-Cooper-Schrieffer theory of superconducting quantum rings.The European physical journal. B · 2025Article
- Acceleration of Near-IR Emission through Efficient Surface Passivation in CdMaterials (Basel, Switzerland) · 2023Article
- Two-Dimensional CdSe-PbSe Heterostructures and PbSe Nanoplatelets: Formation, Atomic Structure, and Optical Properties.The journal of physical chemistry. C, Nanomaterials and interfaces · 2022Article
- Stimulated Emission through an Electron-Hole Plasma in Colloidal CdSe Quantum Rings.Nano letters · 2021Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
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.
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Registered trials
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