Deformable Organic Nanowire Field-Effect Transistors
- Deformable Organic Nanowire Field-Effect Transistors
- 손동희; 이영준; 오진영; 김태호; 구시아오단; 김영인; 왕깅지; 우흥친; 래트너 라파엘; 토존; 카스마타 토루; 강지형; 마튜 제임스; 니우 웨이준; 헤밍퀴안; 싱클레어 로버트; 추이이; 톡 제프리; 이태우; 바오 제난
- stretchable; nanowire; field-effect transistor; deformable
- Issue Date
- Advanced materials
- VOL 30, NO 7-1704401-8
- 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.
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