Light amplification using inverted core/shell nanocrystals: Towards lasing in the single-exciton regime

TitleLight amplification using inverted core/shell nanocrystals: Towards lasing in the single-exciton regime
Publication TypeJournal Article
Year of Publication2004
AuthorsIvanov, SA, Nanda, J, Piryatinski, A, Achermann, M, Balet, LP, Bezel, IV, Anikeeva, PO, Tretiak, S, Klimov, VI
JournalJournal of Physical Chemistry B
Volume108
Issue30
Pagination10625 - 10630
Date Published2004/07/29/
Abstract

Size-controlled spectral tunability and chemical flexibility make semiconductor nanocrystals (NCs) attractive as nanoscale building blocks for color-selectable optical-gain media. The technological potential of NCs as lasing materials is. however, significantly diminished by highly efficient nonradiative Auger recombination of multiexcitons leading to ultrafast decay of optical gain. Here we explore a novel approach to achieve NC lasing in the Auger recombination-free regime by using type