Control of exciton confinement in quantum dot-organic complexes through energetic alignment of interfacial orbitals

Matthew T. Frederick, Victor A. Amin, Nathaniel K. Swenson, Andrew Y. Ho, Emily A. Weiss

Research output: Contribution to journalArticle

83 Citations (Scopus)

Abstract

This paper describes a method to control the quantum confinement, and therefore the energy, of excitonic holes in CdSe QDs through adsorption of the hole-delocalizing ligand phenyldithiocarbamate, PTC, and para substitutions of the phenyl ring of this ligand with electron-donating or -withdrawing groups. These substitutions control hole delocalization in the QDs through the energetic alignment of the highest occupied orbitals of PTC with the highest density-of-states region of the CdSe valence band, to which PTC couples selectively.

Original languageEnglish
Pages (from-to)287-292
Number of pages6
JournalNano letters
Volume13
Issue number1
DOIs
Publication statusPublished - Jan 9 2013

Keywords

  • Bathochromic shift
  • carrier delocalization
  • confinement
  • dithiocarbamate

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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