Control of exciton confinement in quantum dot-organic complexes through energetic alignment of interfacial orbitals.
basic_science · Level V
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- Record sourced from PubMed, PMID 23244048.
- Also identified by DOI 10.1021/nl304098e.
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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.