Highly stretchable polymer semiconductor thin films with multi-modal energy dissipation and high relative stretchability
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Published:2023-12-16
Issue:1
Volume:14
Page:
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ISSN:2041-1723
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Container-title:Nature Communications
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language:en
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Short-container-title:Nat Commun
Author:
Wu Hung-ChinORCID, Nikzad Shayla, Zhu Chenxin, Yan Hongping, Li YangORCID, Niu Weijun, Matthews James R., Xu JieORCID, Matsuhisa Naoji, Arunachala Prajwal Kammardi, Rastak RezaORCID, Linder Christian, Zheng Yu-Qing, Toney Michael F.ORCID, He Mingqian, Bao ZhenanORCID
Abstract
AbstractStretchable polymer semiconductors (PSCs) have seen great advancements alongside the development of soft electronics. But it remains a challenge to simultaneously achieve high charge carrier mobility and stretchability. Herein, we report the finding that stretchable PSC thin films (<100-nm-thick) with high stretchability tend to exhibit multi-modal energy dissipation mechanisms and have a large relative stretchability (rS) defined by the ratio of the entropic energy dissipation to the enthalpic energy dissipation under strain. They effectively recovered the original molecular ordering, as well as electrical performance, after strain was released. The highest rS value with a model polymer (P4) exhibited an average charge carrier mobility of 0.2 cm2V−1s−1 under 100% biaxial strain, while PSCs with low rS values showed irreversible morphology changes and rapid degradation of electrical performance under strain. These results suggest rS can be used as a parameter to compare the reliability and reversibility of stretchable PSC thin films.
Funder
United States Department of Defense | United States Air Force | AFMC | Air Force Office of Scientific Research U.S. Department of Energy National Science Foundation
Publisher
Springer Science and Business Media LLC
Subject
General Physics and Astronomy,General Biochemistry, Genetics and Molecular Biology,General Chemistry,Multidisciplinary
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