http://www.cnr.it/ontology/cnr/individuo/prodotto/ID3998
Intrinsic optical nonlinearity in colloidal seeded grown CdSe/CdS nanostructures: Photoinduced screening of the internal electric field (Articolo in rivista)
- Type
- Label
- Intrinsic optical nonlinearity in colloidal seeded grown CdSe/CdS nanostructures: Photoinduced screening of the internal electric field (Articolo in rivista) (literal)
- Anno
- 2008-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1103/PhysRevB.78.195313 (literal)
- Alternative label
Morello, G; Della Sala, F; Carbone, L; Manna, L; Maruccio, G; Cingolani, R; De Giorgi, M (2008)
Intrinsic optical nonlinearity in colloidal seeded grown CdSe/CdS nanostructures: Photoinduced screening of the internal electric field
in Physical review. B, Condensed matter and materials physics
(literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Morello, G; Della Sala, F; Carbone, L; Manna, L; Maruccio, G; Cingolani, R; De Giorgi, M (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://link.aps.org/doi/10.1103/PhysRevB.78.195313 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- National Nanotechnology Laboratory (NNL) of CNR-INFM
Distretto Tecnologico ISUFI
Università del Salento (literal)
- Titolo
- Intrinsic optical nonlinearity in colloidal seeded grown CdSe/CdS nanostructures: Photoinduced screening of the internal electric field (literal)
- Abstract
- The assessment of the presence and the origin of an intrinsic internal electric field in novel colloidal CdSe/CdS nanoheterostructures is of fundamental importance in order to understand their optical properties, due to both their impact on the basic research fields, and their potential in technological applications. To this aim, a deep study of the carrier dynamics in spherical (quantum dots) and rod-shaped (nanorods) colloidal seeded grown CdSe/CdS nanocrystals via time-resolved photoluminescence spectroscopy has been carried out in this report. A transient, power-dependent redshift of the spectra is observed. An optical nonlinearity is also found by continuous-wave photoluminescence measurements on ensemble and single nanostructures, which is attributed to a photoinduced screening of an internal field. This internal field could originate from the intrinsic piezoelectric polarization, which is a typical effect in strained heterostructures with a lattice mismatch greater than 3.9%. Our theoretical calculations support the experimental results. (literal)
- Prodotto di
- Autore CNR
- Insieme di parole chiave
Incoming links:
- Autore CNR di
- Prodotto
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi
- Insieme di parole chiave di