Cleavable Ligands Enable Uniform Close Packing in Colloidal Quantum Dot Solids

Graham H. Carey; Mingjian Yuan; Riccardo Comin; Oleksandr Voznyy; Edward H. Sargent

doi:10.1021/acsami.5b06890

Cleavable Ligands Enable Uniform Close Packing in Colloidal Quantum Dot Solids

Graham H. Carey, Mingjian Yuan, Riccardo Comin, Oleksandr Voznyy, Edward H. Sargent^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

Uniform close packing in colloidal quantum dot solids is critical for high-optical density, high-mobility optoelectronic devices. A hybrid-ligand strategy is developed, combining the advantages of solid state and solution-phase ligand exchanges. This strategy uses a medium length thioamide ligand that is readily cleaved in a single chemical treatment, leading to quantum dot solids with uniformly packed domains 3 times larger than those observed in ligand-exchanged films.

Original language	English (US)
Pages (from-to)	21995-22000
Number of pages	6
Journal	ACS Applied Materials and Interfaces
Volume	7
Issue number	39
DOIs	https://doi.org/10.1021/acsami.5b06890
State	Published - Oct 7 2015

Keywords

colloidal quantum dot
densification
ligand cleavage
thin films
thioamide

ASJC Scopus subject areas

Materials Science(all)

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10.1021/acsami.5b06890

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title = "Cleavable Ligands Enable Uniform Close Packing in Colloidal Quantum Dot Solids",

abstract = "Uniform close packing in colloidal quantum dot solids is critical for high-optical density, high-mobility optoelectronic devices. A hybrid-ligand strategy is developed, combining the advantages of solid state and solution-phase ligand exchanges. This strategy uses a medium length thioamide ligand that is readily cleaved in a single chemical treatment, leading to quantum dot solids with uniformly packed domains 3 times larger than those observed in ligand-exchanged films.",

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author = "Carey, {Graham H.} and Mingjian Yuan and Riccardo Comin and Oleksandr Voznyy and Sargent, {Edward H.}",

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AU - Yuan, Mingjian

AU - Comin, Riccardo

AU - Voznyy, Oleksandr

AU - Sargent, Edward H.

PY - 2015/10/7

Y1 - 2015/10/7

N2 - Uniform close packing in colloidal quantum dot solids is critical for high-optical density, high-mobility optoelectronic devices. A hybrid-ligand strategy is developed, combining the advantages of solid state and solution-phase ligand exchanges. This strategy uses a medium length thioamide ligand that is readily cleaved in a single chemical treatment, leading to quantum dot solids with uniformly packed domains 3 times larger than those observed in ligand-exchanged films.

AB - Uniform close packing in colloidal quantum dot solids is critical for high-optical density, high-mobility optoelectronic devices. A hybrid-ligand strategy is developed, combining the advantages of solid state and solution-phase ligand exchanges. This strategy uses a medium length thioamide ligand that is readily cleaved in a single chemical treatment, leading to quantum dot solids with uniformly packed domains 3 times larger than those observed in ligand-exchanged films.

KW - colloidal quantum dot

KW - densification

KW - ligand cleavage

KW - thin films

KW - thioamide

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ER -

Cleavable Ligands Enable Uniform Close Packing in Colloidal Quantum Dot Solids

Abstract

Keywords

ASJC Scopus subject areas

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