Recently, Prof. Zhang Min and Huang Qiuyue published their research results entitled ” Intrinsically flexible all-carbon-nanotube electronics enabled by a hybrid organic–inorganic gate dielectric ” on npj Flexible Electronics (the SCI of zone 1 with IF =12.019 in2022) as the corresponding author and the first author respectively.
This work was jointly completed by Zhang Min’s research group from the School of Information Engineering, Peking University, and Wang Xinwei’s research group from the School of New Materials. Huang Qiuyue, a master’s student from the School of Information Engineering, and Wang Jialiang, a master’s student from the School of New Materials, are the co-first authors of this paper.
The advancement of Internet of Things has stimulated huge demands on low-voltage flexible electronics. Carbon-nanotube (CNT)-based electronics are of great promise to this end for their intrinsic flexibility, high carrier mobility, and capability to synthesize as semiconducting or metallic to serve as the channels, electrodes, and interconnects of circuits. However, the gate dielectric often has to adopt brittle oxides, which can seriously limit the device flexibility. Herein, we show that a hybrid polyimide-Al2O3 material can serve as a good gate dielectric to realize truly intrinsic flexibility of transistors and circuits based on CNTs. With this hybrid dielectric, high-performance all-CNT transistors and integrated circuits of inverters, ring oscillators, and logic gates are demonstrated. Particularly, the inverters exhibit a remarkably high gain of 342.5 and can be used as an analog amplifier for millivolt small signals. Ultralow voltage (50 mV) operation is also feasible, which highlights the great promise for low-power applications.
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