Infrared transient absorption and excited-states of excitons and biexcitons confined in CuCl quantum dots

K. Miyajima, K. Edamatsu, T. Itoh

Research output: Contribution to journalConference article

14 Citations (Scopus)

Abstract

Mid-infrared picosecond transient absorption has revealed a new aspect of the excited states of confined biexcitons in CuCl quantum dots embedded in a NaCl matrix. The transient absorption exhibits two-decay components that originate from confined excitons and biexcitons. The attribution of the fast-decay component to the confined biexcitons has been confirmed by measurement by a two-photon resonant excitation process. The transient-absorption spectrum of biexcitons indicates the existence of a stable biexciton excited state in the quantum dots, in contrast to the unstable excited state in the bulk crystal.

Original languageEnglish
Pages (from-to)371-374
Number of pages4
JournalJournal of Luminescence
Volume108
Issue number1-4
DOIs
Publication statusPublished - 2004 Jun 1
EventProceedings of the Fourtheenth International Conference - Christchurch, New Zealand
Duration: 2003 Aug 32003 Aug 8

Keywords

  • Biexciton
  • CuCl;Quantum dot
  • Transient absorption

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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