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Highly stretchable polymer semiconductor films through the nanoconfinement effect

Xu, J; Wang, S; Wang, G-JN; Zhu, C; Luo, S; Jin, L; Gu, X; ... Bao, Z; + view all (2017) Highly stretchable polymer semiconductor films through the nanoconfinement effect. Science , 355 (6320) pp. 59-64. 10.1126/science.aah4496. Green open access

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Abstract

Soft and conformable wearable electronics require stretchable semiconductors, but existing ones typically sacrifice charge transport mobility to achieve stretchability. We explore a concept based on the nanoconfinement of polymers to substantially improve the stretchability of polymer semiconductors, without affecting charge transport mobility. The increased polymer chain dynamics under nanoconfinement significantly reduces the modulus of the conjugated polymer and largely delays the onset of crack formation under strain. As a result, our fabricated semiconducting film can be stretched up to 100% strain without affecting mobility, retaining values comparable to that of amorphous silicon. The fully stretchable transistors exhibit high biaxial stretchability with minimal change in on current even when poked with a sharp object. We demonstrate a skinlike finger-wearable driver for a light-emitting dio

Type: Article
Title: Highly stretchable polymer semiconductor films through the nanoconfinement effect
Open access status: An open access version is available from UCL Discovery
DOI: 10.1126/science.aah4496
Publisher version: http://dx.doi.org/10.1126/science.aah4496
Language: English
Additional information: AAM saved to S-Drive, improved metadata, No embargo, made live (PZ 16/05/2018)
Keywords: Science & Technology, Multidisciplinary Sciences, Science & Technology - Other Topics, Glass-Transition Temperature, Charge-Transport, Electronics, Transistors, Aggregation, Copolymer, Mobility, Therapy
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
URI: http://discovery.ucl.ac.uk/id/eprint/10048331
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