Polyfluorinated Electrolyte for Fully Printed Carbon Nanotube Electronics
Polyfluorinated Electrolyte for Fully Printed Carbon Nanotube Electronics
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DOI：
10.1002/adfm.201601605
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发表时间：
2016-10-11
影响因子：
19
通讯作者：
Smolinski, Nina
中科院分区：
文献类型：
--
作者：
Li, Huaping;Tang, Yifan;Smolinski, Nina
在先进的运输系统中，高度需要具有高热稳定性和机械强度的柔性电子器件。半导体单壁碳纳米管是这种薄膜晶体管的主要活性材料之一，因为它们是可印刷的，柔性的，热稳定的，机械强度高。具有大电容的电介质是另一个主要组件，聚合物电解质被印刷用于柔性电子产品，但它们的机械强度差，工作温度低。在这里，通过在高温下固化印刷的聚氟树脂（PFR）和离子液体复合物，开发了具有高电容的透明、机械柔性和热稳定的聚氟电解质（PFE）。PFE继承了PFR的机械柔性和热稳定性。PFE的高电容主要是由于固定在多孔结构中的离子液体所致。利用顶栅PFE，完全印刷的电子纯单手性（6，5）单壁碳纳米管（SWCNT）薄膜晶体管（TFT）表现出空气稳定、一致和可靠的双极特性，在低操作电压下对于两种载流子具有高的导通电流（1 mS）和小的亚阈值摆幅（10（5）ON/OFF电流比。
Flexible electronics with highly thermal stability and mechanical strength are highly needed in advanced transportation systems. Semiconducting single-walled carbon nanotubes are one of the leading active materials for such thin film transistors because they are printable, flexible, thermally stable, and mechanically strong. Dielectrics with large capacitance are another major component, and polymer electrolytes are printed for flexible electronics, but they suffer from poor mechanical strength and low operating temperature. Here, a transparent, mechanically flexible, and thermally stable polyfluorinated electrolyte (PFE) is developed with high capacitance by curing printed polyfluorinated resin (PFR) and ionic liquid composite at high temperature. PFE inherits the mechanical flexibility and thermal stability from PFR. The immobilized ionic liquid inside the porous structures of PFE accounts for the high capacitance. With top-gated PFE, fully printed electronically pure single-chirality (6,5) single-walled carbon nanotube (SWCNT) thin-film transistors (TFTs) exhibit air stable, consistent, and reliable ambipolar characteristics with high transconductance (1 mS) and small subthreshold swing (10(5) ON/OFF current ratio for both carriers under low operation voltage.