Quantum dot-block copolymer hybrids with improved properties and their application to quantum dot light-emitting devices

Matthias Zorn; Wan Ki Bae; Jeonghun Kwak; Hyemin Lee; Changhee Lee; Rudolf Zentel; Kookheon Char

doi:10.1021/nn800790s

Quantum dot-block copolymer hybrids with improved properties and their application to quantum dot light-emitting devices

Matthias Zorn
, Wan Ki Bae
, Jeonghun Kwak
, Hyemin Lee
, Changhee Lee
, Rudolf Zentel
, Kookheon Char

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

142 Scopus citations

Abstract

To combine the optical properties of CdSe@ZnS quantum dots (QDs) with the electrical properties of semiconducting polymers, we prepared QD/polymer hybrids by grafting a block copolymer (BCP) containing thiol-anchoring moieties (poly(para-methyl triphenylamine-b-cysteamine acrylamide)) onto the surfaces of QDs through the ligand exchange procedure. The prepared QD/polymer hybrids possess improved processability such as enhanced solubility in various organic solvents as well as the film formation properties along with the improved colloidal stability derived from the grafted polymer shells. We also demonstrated light-emitting diodes based on QD/polymer hybrids, exhibiting the improved device performance (i.e., 3-fold increase in the external quantum efficiency) compared with the devices prepared by pristine (unmodified) QDs.

Original language	English
Pages (from-to)	1063-1068
Number of pages	6
Journal	ACS Nano
Volume	3
Issue number	5
DOIs	https://doi.org/10.1021/nn800790s
State	Published - 26 May 2009
Externally published	Yes

Keywords

Hybrid materials
Light-emitting device(s)
Quantum dot(s)

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10.1021/nn800790s

Cite this

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title = "Quantum dot-block copolymer hybrids with improved properties and their application to quantum dot light-emitting devices",

abstract = "To combine the optical properties of CdSe@ZnS quantum dots (QDs) with the electrical properties of semiconducting polymers, we prepared QD/polymer hybrids by grafting a block copolymer (BCP) containing thiol-anchoring moieties (poly(para-methyl triphenylamine-b-cysteamine acrylamide)) onto the surfaces of QDs through the ligand exchange procedure. The prepared QD/polymer hybrids possess improved processability such as enhanced solubility in various organic solvents as well as the film formation properties along with the improved colloidal stability derived from the grafted polymer shells. We also demonstrated light-emitting diodes based on QD/polymer hybrids, exhibiting the improved device performance (i.e., 3-fold increase in the external quantum efficiency) compared with the devices prepared by pristine (unmodified) QDs.",

keywords = "Hybrid materials, Light-emitting device(s), Quantum dot(s)",

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doi = "10.1021/nn800790s",

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TY - JOUR

T1 - Quantum dot-block copolymer hybrids with improved properties and their application to quantum dot light-emitting devices

AU - Zorn, Matthias

AU - Ki Bae, Wan

AU - Kwak, Jeonghun

AU - Lee, Hyemin

AU - Lee, Changhee

AU - Zentel, Rudolf

AU - Char, Kookheon

PY - 2009/5/26

Y1 - 2009/5/26

N2 - To combine the optical properties of CdSe@ZnS quantum dots (QDs) with the electrical properties of semiconducting polymers, we prepared QD/polymer hybrids by grafting a block copolymer (BCP) containing thiol-anchoring moieties (poly(para-methyl triphenylamine-b-cysteamine acrylamide)) onto the surfaces of QDs through the ligand exchange procedure. The prepared QD/polymer hybrids possess improved processability such as enhanced solubility in various organic solvents as well as the film formation properties along with the improved colloidal stability derived from the grafted polymer shells. We also demonstrated light-emitting diodes based on QD/polymer hybrids, exhibiting the improved device performance (i.e., 3-fold increase in the external quantum efficiency) compared with the devices prepared by pristine (unmodified) QDs.

AB - To combine the optical properties of CdSe@ZnS quantum dots (QDs) with the electrical properties of semiconducting polymers, we prepared QD/polymer hybrids by grafting a block copolymer (BCP) containing thiol-anchoring moieties (poly(para-methyl triphenylamine-b-cysteamine acrylamide)) onto the surfaces of QDs through the ligand exchange procedure. The prepared QD/polymer hybrids possess improved processability such as enhanced solubility in various organic solvents as well as the film formation properties along with the improved colloidal stability derived from the grafted polymer shells. We also demonstrated light-emitting diodes based on QD/polymer hybrids, exhibiting the improved device performance (i.e., 3-fold increase in the external quantum efficiency) compared with the devices prepared by pristine (unmodified) QDs.

KW - Hybrid materials

KW - Light-emitting device(s)

KW - Quantum dot(s)

UR - https://www.scopus.com/pages/publications/66949156372

U2 - 10.1021/nn800790s

DO - 10.1021/nn800790s

M3 - Article

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AN - SCOPUS:66949156372

SN - 1936-0851

VL - 3

SP - 1063

EP - 1068

JO - ACS Nano

JF - ACS Nano

IS - 5

ER -

Quantum dot-block copolymer hybrids with improved properties and their application to quantum dot light-emitting devices

Abstract

Keywords

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