Structure determination and homogeneous optical properties of CdS/HgS quantum dots

A. Mews*, U. Banin, A. V. Kadavanich, A. P. Alivisatos

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

The structural and optical properties of heterogeneous semiconductor nanoparticles consisting of CdS and HgS are investigated by High Resolution Electron Microscopy (HRTEM) and selective spectroscopy like Hole Burning (HB) and Fluorescence Line Narrowing (FLN). The HRTEM study shows that epitaxy is possible in nanocrystals, provided the crystallites have well defined faceted shapes to begin with. From the HB- and FLN experiments homogeneous absorption and fluorescence spectra are calculated. It could be shown that the absorption is coupled to HgS-like phonons (250 cm-1) whereas the emission frequency is closer to the LO phonon frequency of CdS.

Original languageAmerican English
Pages (from-to)1621-1625
Number of pages5
JournalBerichte der Bunsengesellschaft/Physical Chemistry Chemical Physics
Volume101
Issue number11
DOIs
StatePublished - 1997

Keywords

  • Complex Compounds
  • Electron Microscopy
  • Nanocrystal
  • Semiconductors
  • Spectroscopy, Visible

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