Issue 1, 2016
From the journal:

Polymer Chemistry

Side-chain conjugated polymers for use in the active layers of hybrid semiconducting polymer/quantum dot light emitting diodes†

Ana Fokina,ab   Yeonkyung Lee,c   Jun Hyuk Chang,de   Lydia Braun,a   Wan Ki Bae,d   Kookheon Char,e   Changhee Leec  and  Rudolf Zentel*a  

* Corresponding authors

a Institute for Organic Chemistry, Johannes Gutenberg University, Duesbergweg 10-14, Mainz, Germany
E-mail: zentel@uni-mainz.de

b Graduate School for Excellence Materials Science in Mainz, Johannes Gutenberg University Mainz, Staudingerweg 9, 55128 Mainz, Germany

c Department of Electrical Engineering and Computer Science, Inter-University Semiconductor Research Center (ISRC), Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea

d Photo-Electronic Hybrids Research Center, National Agenda Research Division, Korea Institute of Science and Technology, 14-gil 5, Hwarang ro, Seongbuk gu, Seoul 136-791, Korea

e School of Chemical and Biological Engineering, The National Creative Research Initiative Center for Intelligent Hybrids, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Korea

Abstract

Three monomers, M1–M3, with modified carbazole cores and styrene functionality were prepared for use in the active layers of hybrid polymer/quantum dot light emitting diodes. Utilizing reversible addition fragmentation chain transfer polymerization, side-chain conjugated polymers, P1–P3, with narrow polydispersities and disulfide end groups were obtained. The thermal, optical, and electrochemical properties of the polymers varied depending on the substituents of the carbazole cores. Through the disulfide end groups the polymers were chemically blended with quantum dots to obtain QD/polymer hybrids, which were further used as active layers in light emitting diodes. The fabricated devices retained the superior electroluminescence properties of QDs and showed good device performance with a highest external quantum efficiency of 6.09%. Moreover, a correlation between the HOMO level of the polymer and device performance was identified.

Graphical abstract: Side-chain conjugated polymers for use in the active layers of hybrid semiconducting polymer/quantum dot light emitting diodes

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Article information

DOI
https://doi.org/10.1039/C5PY01492A
Article type
Paper
Submitted
15 Sep 2015
Accepted
12 Oct 2015
First published
21 Oct 2015
This article is Open Access
Creative Commons BY-NC license

Polym. Chem., 2016,7, 101-112

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Side-chain conjugated polymers for use in the active layers of hybrid semiconducting polymer/quantum dot light emitting diodes

A. Fokina, Y. Lee, J. H. Chang, L. Braun, W. K. Bae, K. Char, C. Lee and R. Zentel, Polym. Chem., 2016, 7, 101 DOI: 10.1039/C5PY01492A

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