Control of Exciton Confinement in Quantum Dot-Organic Complexes through Energetic Alignment of Interfacial Orbitals

被引：106

作者：

Frederick, Matthew T. ^{[1
]}

Amin, Victor A. ^{[1
]}

Swenson, Nathaniel K. ^{[1
]}

Ho, Andrew Y. ^{[1
]}

Weiss, Emily A. ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

NANO LETTERS | 2013年 / 13卷 / 01期

关键词：

Bathochromic shift; dithiocarbamate; carrier delocalization; confinement; CDSE; NANOCRYSTALS; SURFACES; LIGAND; FILMS; SIZE;

D O I：

10.1021/nl304098e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：287 / 292

页数：6

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