| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1554697 | Superlattices and Microstructures | 2010 | 4 Pages |
Abstract
In this contribution we report on an optical nonlinearity featuring colloidal seeded grown CdSe/CdS nanorods (NRs). It consists of a photoluminescence (PL) blueshift of single rod spectra with increasing laser power and a transient, power-dependent redshift of the spectra studied by time resolved PL measurement, strictly related to the multicarrier scattering occurring at high excitation density. We attribute this nonlinearity to a photo-induced screening of an internal field, originating from the piezoelectric polarization induced at the core/shell interface.
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Authors
G. Morello, F. Della Sala, L. Carbone, L. Manna, R. Cingolani, M. De Giorgi,