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Rate-selected growth of ultrapure semiconducting carbon nanotube arrays

Author

Listed:
  • Zhenxing Zhu

    (Tsinghua University
    Tsinghua University)

  • Nan Wei

    (Aalto University)

  • Weijun Cheng

    (Tsinghua University)

  • Boyuan Shen

    (Tsinghua University)

  • Silei Sun

    (Tsinghua University)

  • Jun Gao

    (Tsinghua University)

  • Qian Wen

    (Tsinghua University)

  • Rufan Zhang

    (Tsinghua University)

  • Jun Xu

    (Tsinghua University)

  • Yao Wang

    (Tsinghua University)

  • Fei Wei

    (Tsinghua University)

Abstract

Carbon nanotubes (CNTs) are promising candidates for smart electronic devices. However, it is challenging to mediate their bandgap or chirality from a vapor-liquid-solid growth process. Here, we demonstrate rate-selected semiconducting CNT arrays based on interlocking between the atomic assembly rate and bandgap of CNTs. Rate analysis confirms the Schulz-Flory distribution which leads to various decay rates as length increases in metallic and semiconducting CNTs. Quantitatively, a nearly ten-fold faster decay rate of metallic CNTs leads to a spontaneous purification of the predicted 99.9999% semiconducting CNTs at a length of 154 mm, and the longest CNT can be 650 mm through an optimized reactor. Transistors fabricated on them deliver a high current of 14 μA μm−1 with on/off ratio around 108 and mobility over 4000 cm2 V−1 s−1. Our rate-selected strategy offers more freedom to control the CNT purity in-situ and offers a robust methodology to synthesize perfectly assembled nanotubes over a long scale.

Suggested Citation

  • Zhenxing Zhu & Nan Wei & Weijun Cheng & Boyuan Shen & Silei Sun & Jun Gao & Qian Wen & Rufan Zhang & Jun Xu & Yao Wang & Fei Wei, 2019. "Rate-selected growth of ultrapure semiconducting carbon nanotube arrays," Nature Communications, Nature, vol. 10(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12519-5
    DOI: 10.1038/s41467-019-12519-5
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    Cited by:

    1. Fuyao Liu & Qianqian Wang & Gongxun Zhai & Hengxue Xiang & Jialiang Zhou & Chao Jia & Liping Zhu & Qilin Wu & Meifang Zhu, 2022. "Continuously processing waste lignin into high-value carbon nanotube fibers," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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