A comparison of the photophysical properties of thiolate-capped CdS quantum dots with thiolate-capped CdS molecular clusters

Lee K. Yeung, Kelly Sooklal, Rahina Mahtab, Bin Zhang, Richard D. Adams, Catherine J. Murphy

Research output: Contribution to journalArticle

Abstract

In the last several years, great advances have been made in the ability to synthesize semiconductor quantum dots with very narrow size distributions. Here, we report the synthesis of a series of thiolate-capped CdS quantum dots having reasonably narrow size distributions and make optical property comparisons to the crystallographically defined CdS molecular clusters having essentially "zero" size distribution. These clusters contain a "Cd10S4" core and thiolate/halide capping ligands. The luminescence of the molecular clusters, like the nanoparticles, is greatly influenced by the nature of the capping ligands. Additionally, the luminescence of the molecular clusters can be quite similar to that observed for their larger quantum dot counterparts.

Original languageEnglish (US)
Pages (from-to)247-252
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume571
StatePublished - Dec 1 1999
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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