期刊
ORGANIC ELECTRONICS
卷 50, 期 -, 页码 367-375出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.orgel.2017.08.013
关键词
Organic thermoelectrics; Stretchable thermoelectrics; Conducting polymer; Electron delocalization; Hopping transport
资金
- National Research Foundation (NRF) of Korea [2017M3A7B4049172, 2014R1A1A2055685, 2015M2B2A4032922]
- Ministry of Science and ICT
- R& D Convergence Program of NST (National Research Council of Science & Technology) of Republic of Korea
- National Research Foundation of Korea [2015M2B2A4032922, 2017M3A7B4049172, 2014R1A1A2055685] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Wearable electronics, as a new form of ubiquitous technology, require a sustainable self-powering system with an enhanced mechanical durability. In this report, we demonstrate a conducting polymer based stretchable thermoelectric performance with a synergetic effect of an enhanced power factor due to electron delocalization. The fluorosurfactant treatment of poly(3,4-ethylene dioxythiophene): poly(styrenesulphonate) (PEDOT: PSS) films induced a significant dedoping effect with an enhanced Seebeck coefficient and a morphological change into an elongated lamellar structure. Such structural transformation led to a reduced transport dimensionality with strongly extended electron delocalization yielding a simultaneous enhancement of the electron mobility and the Seebeck coefficient, which produced an improved thermoelectric power factor. Most notably, the mechanical durability of the PEDOT: PSS film was greatly improved tolerating up to a 60% static strain and over several hundred cycles of 50% strain. The demonstrated concomitant enhancement of the mechanical stretchability and thermoelectric performance inspires a promising approach for improving shape-adjustable self-powering devices. (C) 2017 Elsevier B.V. All rights reserved.
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