Evidence of electron wave function delocalization in CdSe/CdS asymmetric nanocrystals |
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| Authors: | Maria Grazia Lupo Margherita Zavelani-Rossi Angela Fiore Dario Polli Luigi Carbone Roberto Cingolani Liberato Manna Guglielmo Lanzani |
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| Institution: | 1. Dipartimento di Fisica, Politecnico di Milano, P.za L. da Vinci 32, 20133 Milano, Italy;2. ISUFI−NNL-National Nanotechnology Laboratory, via per Arnesano, Km5, 73100 Lecce, Italy |
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| Abstract: | We studied the delocalization of electron wave function in asymmetric CdSe/CdS nanocrystals, consisting of a spherical CdSe dot embedded in an elongated CdS shell, by means of a pump–probe technique. By comparing the transient spectra obtained upon pumping the band edge transition of the CdSe in CdSe/CdS heterostructure and in a bare CdSe dot, we observed the delocalization of electron wave function at the CdSe/CdS interface. |
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| Keywords: | Ultrafast dynamics Core&ndash shell nanocrystals Pump&ndash probe |
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