Deformable Organic Nanowire Field-Effect Transistors

作者：Lee Yeongjun; Oh Jin Young; Kim Taeho Roy; Gu Xiaodan; Kim Yeongin; Wang Ging Ji Nathan; Wu Hung Chin; 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 Tae Woo^*; Bao Zhenan^*

来源：Advanced Materials, 2018, 30(7): 1704401.

DOI：10.1002/adma.201704401

• biomedical electronics
• deformable electronics
• nanowire electronics
• nanowire transistors
• stretchable transistors

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.

• 出版日期2018-2-15