Circularly polarized emission from colloidal nanocrystal quantum dots confined in microcavities formed by chiral mirrors

Fan Zhang, Jian Xu, Akhlesh Lakhtakia, Sean M. Pursel, Mark W. Horn, Andrew Wang

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Colloidal semiconductor nanocrystal quantum dots (NQDs) confined in a microcavity device emit resonance-enhanced, circularly polarized (CP) light, when the device consists of a pair of chiral sculptured-thin-film mirrors separated by layers of emissive nanocrystals and spacers that form a λ2 -resonant cavity. The resonant emission from the NQDs within the microcavity is strongly directed normally to the mirror surfaces. It is speculated that the enhanced coupling between the NQD excitons and the confined electromagnetic field resulted in the observed CP emission from the embedded NQDs with significant improvements in the light output's directionality and color purity.

Original languageEnglish (US)
Article number023102
JournalApplied Physics Letters
Volume91
Issue number2
DOIs
StatePublished - Aug 1 2007

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Circularly polarized emission from colloidal nanocrystal quantum dots confined in microcavities formed by chiral mirrors'. Together they form a unique fingerprint.

  • Cite this