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Boosting the Ambipolar Performance of Solution-Processable Polymer Semiconductors via Hybrid Side-Chain Engineering

Title
Boosting the Ambipolar Performance of Solution-Processable Polymer Semiconductors via Hybrid Side-Chain Engineering
Authors
Junghoon LeeA-Reum HanHojeong YuTae Joo ShinChangduk YangOh, JH
POSTECH Authors
Oh, JH
Date Issued
Jun-2013
Publisher
American Chemical Society
Abstract
Ambipolar polymer semiconductors are highly suited for use in flexible, printable, and large-area electronics as they exhibit both n-type (electron-transporting) and p-type (hole-transporting) operations within a single layer. This allows for cost-effective fabrication of complementary circuits with high noise immunity and operational stability. Currently, the performance of ambipolar polymer semiconductors lags behind that of their unipolar counterparts. Here, we report on the side-chain engineering of conjugated, alternating electron donoracceptor (D-A) polymers using diketopyrrolopyrrole-selenophene copolymers with hybrid siloxane-solubilizing groups (PTDPPSe-Si) to enhance ambipolar performance. The alkyl spacer length of the hybrid side chains was systematically tuned to boost ambipolar performance. The optimized three-dimensional (3-D) charge transport of PTDPPSe-Si with pentyl spacers yielded unprecedentedly high hole and electron mobilities of 8.84 and 4.34 cm(2) V-1 s(-1), respectively. These results provide guidelines for the molecular design of semiconducting polymers with hybrid side chains.
URI
http://oasis.postech.ac.kr/handle/2014.oak/14398
DOI
10.1021/JA403949G
ISSN
0002-7863
Article Type
Article
Citation
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, vol. 135, no. 25, page. 9540 - 9547, 2013-06
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오준학OH, JOON HAK
Dept. of Chemical Enginrg
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