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Carbon nanotube-based flexible high-speed circuits with sub-nanosecond stage delays

Author

Listed:
  • Guanhua Long

    (Peking University)

  • Wanlin Jin

    (Peking University)

  • Fan Xia

    (Peking University
    Peking University)

  • Yuru Wang

    (Peking University)

  • Tianshun Bai

    (Peking University)

  • Xingxing Chen

    (Peking University)

  • Xuelei Liang

    (Peking University)

  • Lian-Mao Peng

    (Peking University
    Peking University)

  • Youfan Hu

    (Peking University
    Peking University)

Abstract

High-speed flexible circuits are required in flexible systems to realize real-time information analysis or to construct wireless communication modules for emerging applications. Here, we present scaled carbon nanotube-based thin film transistors (CNT-TFTs) with channel lengths down to 450 nm on 2-μm-thick parylene substrates, achieving state-of-the-art performances of high on-state current (187.6 μA μm−1) and large transconductance (123.3 μS μm−1). Scaling behavior analyses reveal that the enhanced performance introduced by scaling is attributed to channel resistance reduction while the contact resistance (180 ± 50 kΩ per tube) remains unchanged, which is comparable to that achieved in devices on rigid substrates, indicating great potential in ultimate scaled flexible CNT-TFTs with high performance comparable to their counterparts on rigid substrates where contact resistance dominates the performance. Five-stage flexible ring oscillators are built to benchmark the speed of scaled devices, demonstrating a 281 ps stage delay at a low supply voltage of 2.6 V.

Suggested Citation

  • Guanhua Long & Wanlin Jin & Fan Xia & Yuru Wang & Tianshun Bai & Xingxing Chen & Xuelei Liang & Lian-Mao Peng & Youfan Hu, 2022. "Carbon nanotube-based flexible high-speed circuits with sub-nanosecond stage delays," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34621-x
    DOI: 10.1038/s41467-022-34621-x
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    References listed on IDEAS

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