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Deformable Organic Nanowire Field‐Effect Transistors
Author(s) -
Lee Yeongjun,
Oh Jin Young,
Kim Taeho Roy,
Gu Xiaodan,
Kim Yeongin,
Wang GingJi Nathan,
Wu HungChin,
Pfattner Raphael,
To John W. F.,
Katsumata Toru,
Son Donghee,
Kang Jiheong,
Matthews James R.,
Niu Weijun,
He Mingqian,
Sinclair Robert,
Cui Yi,
Tok Jeffery B.H.,
Lee TaeWoo,
Bao Zhenan
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201704401
Subject(s) - materials science , nanowire , transistor , field effect transistor , optoelectronics , semiconductor , dielectric , nanotechnology , electrical engineering , voltage , engineering
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.