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Type: 
Journal
Description: 
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.
Publisher: 
Academic Press
Publication date: 
1 Jan 2010
Authors: 

Giovanni Morello, Fabio Della Sala, Luigi Carbone, L Manna, Roberto Cingolani, Milena De Giorgi

Biblio References: 
Volume: 47 Issue: 1 Pages: 174-177
Origin: 
Superlattices and Microstructures