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

72 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

Fingerprint

Factor IX
Excitons
Semiconductor quantum dots
Substitution reactions
Ligands
alignment
quantum dots
excitons
orbitals
Quantum confinement
Valence bands
substitutes
ligands
Adsorption
Electrons
valence
adsorption
rings
LDS 751
electrons

Keywords

  • Bathochromic shift
  • carrier delocalization
  • confinement
  • dithiocarbamate

ASJC Scopus subject areas

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

Cite this

Control of exciton confinement in quantum dot-organic complexes through energetic alignment of interfacial orbitals. / Frederick, Matthew T.; Amin, Victor A.; Swenson, Nathaniel K.; Ho, Andrew Y.; Weiss, Emily A.

In: Nano Letters, Vol. 13, No. 1, 09.01.2013, p. 287-292.

Research output: Contribution to journalArticle

Frederick, Matthew T. ; Amin, Victor A. ; Swenson, Nathaniel K. ; Ho, Andrew Y. ; Weiss, Emily A. / Control of exciton confinement in quantum dot-organic complexes through energetic alignment of interfacial orbitals. In: Nano Letters. 2013 ; Vol. 13, No. 1. pp. 287-292.
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