材料科学
生物相容性
晶体管
电解质
跨导
纳米技术
光电子学
氧化物
场效应晶体管
数码产品
电压
电气工程
电极
化学
物理化学
冶金
工程类
作者
Dong‐Hee Kang,Jun‐Gyu Choi,Won‐June Lee,Dongmi Heo,Sungrok Wang,Sungjun Park,Myung‐Han Yoon
摘要
Biocompatible field-effect-transistor-based biosensors have drawn attention for the development of next-generation human-friendly electronics. High-performance electronic devices must achieve low-voltage operation, long-term operational stability, and biocompatibility. Herein, we propose an electrolyte-gated thin-film transistor made of large-area solution-processed indium–gallium–zinc oxide (IGZO) semiconductors capable of directly interacting with live cells at physiological conditions. The fabricated transistors exhibit good electrical performance operating under sub-0.5 V conditions with high on-/off-current ratios (>107) and transconductance (>1.0 mS) over an extended operational lifetime. Furthermore, we verified the biocompatibility of the IGZO surface to various types of mammalian cells in terms of cell viability, proliferation, morphology, and drug responsiveness. Finally, the prolonged stable operation of electrolyte-gated transistor devices directly integrated with live cells provides the proof-of-concept for solution-processed metal oxide material-based direct cellular interfaces.
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