http://www.cnr.it/ontology/cnr/individuo/prodotto/ID175720

Multiexciton Engineering in Seeded Core/Shell Nanorods: Transfer from Type-I to Quasi-type-II Regimes (Articolo in rivista)

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Multiexciton Engineering in Seeded Core/Shell Nanorods: Transfer from Type-I to Quasi-type-II Regimes (Articolo in rivista) (literal)

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Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

Alternative label

Amit Sitt ; Fabio Della Sala; Gabi Menagen; Uri Banin (2009)
Multiexciton Engineering in Seeded Core/Shell Nanorods: Transfer from Type-I to Quasi-type-II Regimes
in Nano letters (Print); ACS, American chemical society, Washington, DC (Stati Uniti d'America)
(literal)

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The Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel, and NNL-National Nanotechnology Laboratory of CNR-INFM, Universita del Salento, Via per Arnesano, 73100 Lecce, Italy (literal)

Titolo

Multiexciton Engineering in Seeded Core/Shell Nanorods: Transfer from Type-I to Quasi-type-II Regimes (literal)

Abstract

Multiple excitations in core/shell CdSe/CdS-seeded nanorods of different core diameters are studied by quasi-cw multiexciton spectroscopy and envelope function theoretical calculations. For core diameters below 2.8 nm, a transfer from binding to repulsive behavior is detected for the biexciton, accompanied by significant reduction of the triexciton oscillator strength. These characteristics indicate a transition of the electronic excited states from type-I localization in the core to a quasi-type-II delocalization along the entire rod as the core diameter decreases, in agreement with theoretical calculations. (literal)

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