Ionic thermoelectric gating organic transistors

Dan Zhao, Simone Fabiano (), Magnus Berggren and Xavier Crispin ()
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Dan Zhao: Laboratory of Organic Electronics, Linköping University
Simone Fabiano: Laboratory of Organic Electronics, Linköping University
Magnus Berggren: Laboratory of Organic Electronics, Linköping University
Xavier Crispin: Laboratory of Organic Electronics, Linköping University

Nature Communications, 2017, vol. 8, issue 1, 1-7

Abstract: Abstract Temperature is one of the most important environmental stimuli to record and amplify. While traditional thermoelectric materials are attractive for temperature/heat flow sensing applications, their sensitivity is limited by their low Seebeck coefficient (∼100 μV K−1). Here we take advantage of the large ionic thermoelectric Seebeck coefficient found in polymer electrolytes (∼10,000 μV K−1) to introduce the concept of ionic thermoelectric gating a low-voltage organic transistor. The temperature sensing amplification of such ionic thermoelectric-gated devices is thousands of times superior to that of a single thermoelectric leg in traditional thermopiles. This suggests that ionic thermoelectric sensors offer a way to go beyond the limitations of traditional thermopiles and pyroelectric detectors. These findings pave the way for new infrared-gated electronic circuits with potential applications in photonics, thermography and electronic-skins.

Date: 2017
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DOI: 10.1038/ncomms14214

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