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Low-voltage high-performance flexible digital and analog circuits based on ultrahigh-purity semiconducting carbon nanotubes

Author

Listed:
  • Ting Lei

    (Stanford University
    Peking University)

  • Lei-Lai Shao

    (University of California
    Hewlett Packard Labs)

  • Yu-Qing Zheng

    (Stanford University)

  • Gregory Pitner

    (Stanford University)

  • Guanhua Fang

    (Stanford University)

  • Chenxin Zhu

    (Stanford University)

  • Sicheng Li

    (Hewlett Packard Labs)

  • Ray Beausoleil

    (Hewlett Packard Labs)

  • H.-S. Philip Wong

    (Stanford University)

  • Tsung-Ching Huang

    (Hewlett Packard Labs)

  • Kwang-Ting Cheng

    (University of California
    Hong Kong University of Science and Technology)

  • Zhenan Bao

    (Stanford University)

Abstract

Carbon nanotube (CNT) thin-film transistor (TFT) is a promising candidate for flexible and wearable electronics. However, it usually suffers from low semiconducting tube purity, low device yield, and the mismatch between p- and n-type TFTs. Here, we report low-voltage and high-performance digital and analog CNT TFT circuits based on high-yield (19.9%) and ultrahigh purity (99.997%) polymer-sorted semiconducting CNTs. Using high-uniformity deposition and pseudo-CMOS design, we demonstrated CNT TFTs with good uniformity and high performance at low operation voltage of 3 V. We tested forty-four 2-µm channel 5-stage ring oscillators on the same flexible substrate (1,056 TFTs). All worked as expected with gate delays of 42.7 ± 13.1 ns. With these high-performance TFTs, we demonstrated 8-stage shift registers running at 50 kHz and the first tunable-gain amplifier with 1,000 gain at 20 kHz. These results show great potentials of using solution-processed CNT TFTs for large-scale flexible electronics.

Suggested Citation

  • Ting Lei & Lei-Lai Shao & Yu-Qing Zheng & Gregory Pitner & Guanhua Fang & Chenxin Zhu & Sicheng Li & Ray Beausoleil & H.-S. Philip Wong & Tsung-Ching Huang & Kwang-Ting Cheng & Zhenan Bao, 2019. "Low-voltage high-performance flexible digital and analog circuits based on ultrahigh-purity semiconducting carbon nanotubes," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10145-9
    DOI: 10.1038/s41467-019-10145-9
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