Deformable Organic Nanowire Field-Effect Transistors

Title
Deformable Organic Nanowire Field-Effect Transistors
Authors
손동희이영준오진영김태호구시아오단김영인왕깅지우흥친래트너 라파엘토존카스마타 토루강지형마튜 제임스니우 웨이준헤밍퀴안싱클레어 로버트추이이톡 제프리이태우바오 제난
Keywords
stretchable; nanowire; field-effect transistor; deformable
Issue Date
2018-02
Publisher
Advanced materials
Citation
VOL 30, NO 7-1704401-8
Abstract
Deformable electronic devices that are impervious to mechanical influence when mounted on surfaces of dynamically changing soft matters have great potential for next-generation implantable bioelectronic devices. Here, deformable field-effect transistors (FETs) composed of single organic nanowires (NWs) as the semiconductor are presented. The NWs are composed of fused thiophene diketopyrrolopyrrole based polymer semiconductor and high-molecular-weight polyethylene oxide as both the molecular binder and deformability enhancer. The obtained transistors show high field-effect mobility >8 cm(2) V-1 s(-1) with poly(vinylidenefluoride-co-trifluoroethylene) polymer dielectric and can easily be deformed by applied strains (both 100% tensile and compressive strains). The electrical reliability and mechanical durability of the NWs can be significantly enhanced by forming serpentine-like structures of the NWs. Remarkably, the fully deformable NW FETs withstand 3D volume changes (>1700% and reverting back to original state) of a rubber balloon with constant current output, on the surface of which it is attached. The deformable transistors can robustly operate without noticeable degradation on a mechanically dynamic soft matter surface, e.g., a pulsating balloon (pulse rate: 40 min(-1) (0.67 Hz) and 40% volume expansion) that mimics a beating heart, which underscores its potential for future biomedical applications.
URI
http://pubs.kist.re.kr/handle/201004/67410
ISSN
0935-9648
Appears in Collections:
KIST Publication > Article
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