Multiexciton engineering in seeded core/shell nanorods: transfer from type-I to quasi-type-II regimes

Amit Sitt, Fabio Della Sala, Gabi Menagen, Uri Banin

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)3470-6
Number of pages7
JournalNano Letters
Volume9
Issue number10
DOIs
StatePublished - Oct 2009

Fingerprint

Dive into the research topics of 'Multiexciton engineering in seeded core/shell nanorods: transfer from type-I to quasi-type-II regimes'. Together they form a unique fingerprint.

Cite this