Spectral and dynamical properties of multiexcitons in semiconductor nanocrystals

Research output: Chapter in Book/Report/Conference proceedingChapter

548 Citations (Scopus)

Abstract

Because of the strong spatial confinement of electronic wave functions and reduced dielectric screening, the effects of carrier-carrier Coulomb interactions are greatly enhanced in semiconductor nanocrystals (NCs) compared with those in bulk materials. These interactions open a highly efficient decay channel via Auger recombination, which represents a dominant recombination pathway for multiexcitons in NCs. Furthermore, strong Coulomb coupling between charge carriers leads to extremely efficient direct photogeneration of multiexcitons by single photons via carrier (or exciton) multiplication. This review focuses on spectral and dynamical properties of multiexcitons in semiconductor NCs. The specific topics discussed here include the structure of NC electronic states, spectral signatures of multiexcitons in transient absorption and photo-luminescence, exciton-exciton interaction energies, Auger recombination, and carrier multiplication. This chapter also briefly reviews the implications of multiexciton effects for practical technologies, such as NC lasing and photovoltaics.

Original languageEnglish
Title of host publicationAnnual Review of Physical Chemistry
Pages635-673
Number of pages39
Volume58
DOIs
Publication statusPublished - 2007

Publication series

NameAnnual Review of Physical Chemistry
Volume58
ISSN (Print)0066426X

Fingerprint

Nanocrystals
nanocrystals
Semiconductor materials
excitons
multiplication
Plasma confinement
spectral signatures
Electronic states
interactions
Wave functions
Coulomb interactions
Charge carriers
electronics
lasing
charge carriers
Photoluminescence
Screening
screening
Photons
wave functions

Keywords

  • Auger recombination
  • Biexciton
  • Carrier multiplication
  • Exciton
  • Optical gain
  • Quantum dot
  • Quantum rod
  • Solar cell

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry

Cite this

Klimov, V. I. (2007). Spectral and dynamical properties of multiexcitons in semiconductor nanocrystals. In Annual Review of Physical Chemistry (Vol. 58, pp. 635-673). (Annual Review of Physical Chemistry; Vol. 58). https://doi.org/10.1146/annurev.physchem.58.032806.104537

Spectral and dynamical properties of multiexcitons in semiconductor nanocrystals. / Klimov, Victor I.

Annual Review of Physical Chemistry. Vol. 58 2007. p. 635-673 (Annual Review of Physical Chemistry; Vol. 58).

Research output: Chapter in Book/Report/Conference proceedingChapter

Klimov, VI 2007, Spectral and dynamical properties of multiexcitons in semiconductor nanocrystals. in Annual Review of Physical Chemistry. vol. 58, Annual Review of Physical Chemistry, vol. 58, pp. 635-673. https://doi.org/10.1146/annurev.physchem.58.032806.104537
Klimov VI. Spectral and dynamical properties of multiexcitons in semiconductor nanocrystals. In Annual Review of Physical Chemistry. Vol. 58. 2007. p. 635-673. (Annual Review of Physical Chemistry). https://doi.org/10.1146/annurev.physchem.58.032806.104537
Klimov, Victor I. / Spectral and dynamical properties of multiexcitons in semiconductor nanocrystals. Annual Review of Physical Chemistry. Vol. 58 2007. pp. 635-673 (Annual Review of Physical Chemistry).
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