In this paper, we developed a new method to construct flexible fully-printed all-carbon thin film transistors (TFTs) with excellent properties and highly sensitive ammonia (NH₃) sensors via aerosol jet printing. Here, sorted semiconducting single-walled carbon nanotubes (sc-SWCNTs), carboxyl-functionalized single-walled carbon nanotubes (P₃ SWCNTs) and printed ion gels were chosen as channel materials, printed source, drain and side-gate electrodes, and dielectric layers. Flexible printed side-gate TFTs showed high on/off ratios (∼10⁶), good mobility (up to 9.8 cm² V⁻¹ s⁻¹), low hysteresis and small subthreshold swings (∼80 mV dec⁻¹) at gate voltages of ±1 V. As-prepared TFTs exhibited an extremely high response to NH₃ (up to 346.73% within 11 s) with good selectivity, ultralow limit of detection (LOD) (21.35 ppb) and low power consumption (0.49 nW) at room temperature due to the strong adsorption and enrichment of NH₃ gas by ionic liquids (ILs) in the ion gels and the signal amplification of printed ion-gel TFTs. Furthermore, all devices can withstand 10 000 times bending with a radius of 5 mm, displaying good mechanical flexibility due to the high mechanical properties of carbon nanotubes.

中文翻译：

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高性能柔性全印全碳薄膜晶体管和超灵敏NH3传感器

在本文中，我们开发了一种新方法，可通过气溶胶喷射印刷技术构造具有优异性能的柔性全印刷全碳薄膜晶体管（TFT）和高度敏感的氨（NH ₃）传感器。在此，选择分选的半导体单壁碳纳米管（sc-SWCNTs），羧基官能化单壁碳纳米管（P ₃ SWCNTs）和印刷离子凝胶作为通道材料，印刷源，漏极和侧栅电极以及电介质层。柔性印刷侧栅TFT显示出高的开/关比（〜10 ⁶），良好的迁移率（高达9.8 cm ² V ^-1 s ^-1），低磁滞和小的阈值摆幅（〜80 mV dec ^-1））在±1 V的栅极电压下。制备的TFT对NH ₃表现出极高的响应（在11 s内高达346.73％），具有良好的选择性，超低检测限（LOD）（21.35 ppb）和低功耗（由于离子凝胶中离子液体（IL）对NH ₃气体的强烈吸附和富集以及印刷的离子凝胶TFT的信号放大，因此在室温下为0.49 nW）。此外，由于碳纳米管的高机械性能，所有设备都可以承受半径为5 mm的10000次弯曲，显示出良好的机械柔韧性。