http://www.cnr.it/ontology/cnr/individuo/prodotto/ID167529

Sequential growth of magic-size CdSe nanocrystals (Articolo in rivista)

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Sequential growth of magic-size CdSe nanocrystals (Articolo in rivista) (literal)

Anno

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Alternative label

Kudera, S; Zanella, M; Giannini, C; Rizzo, A; Li, YQ; Gigli, G; Cingolani, R; Ciccarella, G; Spahl, W; Parak, WJ; Manna, L (2007)
Sequential growth of magic-size CdSe nanocrystals
in Advanced materials (Weinh., Print)
(literal)

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Kudera, S; Zanella, M; Giannini, C; Rizzo, A; Li, YQ; Gigli, G; Cingolani, R; Ciccarella, G; Spahl, W; Parak, WJ; Manna, L (literal)

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http://onlinelibrary.wiley.com/doi/10.1002/adma.200601015/abstract;jsessionid=C03E0E258F468A7C74D9B9B514046B14.d01t03 (literal)

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Ist Nazl Fis Nucl, CNR, Natl Nanotechnol Lab, ISUFI,Distretto Tecnol, I-73100 Lecce, Italy; Univ Munich, Ctr Nanosci, D-80799 Munich, Germany; CNR, Ist Cristallog, I-70126 Bari, Italy; Univ Munich, Dept Chem & Biochem, D-81377 Munich, Germany (literal)

Titolo

Abstract

Colloidal semiconductor nanocrystals have been exploited in several applications in which they serve as fluorophores, because of the tunability of the wavelength of the emitted light.[1-3] The possibility of exactly controlling the size of nanocrystals is of great importance in the development of these materials, as this will lead to nano-objects with well-defined and reproducible properties. Whereas this goal seems to be hard to achieve with large nanocrystals, it might be viable for clusters consisting of a few tens or hundreds of atoms, as in this size regime a handful of structures can have an exceptionally high stability and therefore would form preferentially over any other combination of atoms. (literal)
CdSe nanocrystals of well-defined sizes (so-called magic-size clusters, MSCs) have been grown with progressively larger sizes. During the synthesis, the relative populations of the different families of MSCs vary, as smaller clusters evolve into larger clusters. The time evolution of the various MSCs (see figure) is modeled by taking into account their much higher stability over nanocrystals of any intermediate size. A blue-light-emitting diode based on these MSCs is also presented. (literal)

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