Control of Exciton Confinement in Quantum Dot鈥揙rganic Complexes through Energetic Alignment of Interfacial Orbitals
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- 作者：Matthew T. Frederick ; Victor A. Amin ; Nathaniel K. Swenson ; Andrew Y. Ho ; Emily A. Weiss
- 刊名：Nano Letters
- 出版年：2013
- 出版时间：January 9, 2013
- 年：2013
- 卷：13
- 期：1
- 页码：287-292
- 全文大小：295K
- 年卷期：v.13,no.1(January 9, 2013)
- ISSN：1530-6992
文摘
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.