title: Reduced Auger recombination in single CdSe/CdS nanorods by one-dimensional electron delocalization.
abstract: Progress to reduce nonradiative Auger decay in colloidal nanocrystals has recently been made by growing thick shells. However, the physics of Auger suppression is not yet fully understood. Here, we examine the dynamics and spectral characteristics of single CdSe-dot-in-CdS-rod nanocrystals. These exhibit blinking due to charging/discharging, as well as trap-related blinking. We show that one-dimensional electron delocalization into the rod-shaped shell can be as effective as a thick spherical shell at reducing Auger recombination of the negative trion state.
authors.affiliation: Condensed Matter and Interfaces, Debye Institute for Nanomaterials Science , Princetonplein 1, 3584 CC Utrecht, The Netherlands.
authors.forename: Freddy T
authors.initials: FT
authors.lastname: Rabouw
authors.forename: Per
authors.initials: P
authors.lastname: Lunnemann
authors.forename: Relinde J A
authors.initials: RJ
authors.lastname: van Dijk-Moes
authors.forename: Martin
authors.initials: M
authors.lastname: Frimmer
authors.forename: Francesca
authors.initials: F
authors.lastname: Pietra
authors.forename: A Femius
authors.initials: AF
authors.lastname: Koenderink
authors.forename: Daniël
authors.initials: D
authors.lastname: Vanmaekelbergh