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Quantum Dot-Block Copolymer Hybrids with Improved Properties and Their Application to Quantum Dot Light-Emitting Devices

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Authors
Zorn, Matthias; Bae, Wan Ki; Kwak, Jeonghun; Lee, Hyemin; Lee, Changhee; Zentel, Rudolf; Char, Kookheon
Issue Date
2009-04-29
Publisher
American Chemical Society
Citation
ACS Nano 2009, 3, 1063
Keywords
hybrid materialsquantum dot(s)light-emitting device(s)
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.
ISSN
1936-0851
Language
English
URI
http://hdl.handle.net/10371/5656
DOI
https://doi.org/10.1021/nn800790s

https://doi.org/10.1021/nn800790s
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Chemical and Biological Engineering (화학생물공학부)Journal Papers (저널논문_화학생물공학부)
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