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Macro- and atomic-scale observations of a one-dimensional heterojunction in a nickel and palladium nanowire complex

Author

Listed:
  • Masanori Wakizaka

    (Tohoku University)

  • Shohei Kumagai

    (Tohoku University)

  • Hashen Wu

    (Tohoku University)

  • Takuya Sonobe

    (Tohoku University)

  • Hiroaki Iguchi

    (Tohoku University)

  • Takefumi Yoshida

    (Tohoku University)

  • Masahiro Yamashita

    (Tohoku University
    Nankai University)

  • Shinya Takaishi

    (Tohoku University)

Abstract

The creation of low-dimensional heterostructures for intelligent devices is a challenging research topic; however, macro- and atomic-scale connections in one-dimensional (1D) electronic systems have not been achieved yet. Herein, we synthesize a heterostructure comprising a 1D Mott insulator [Ni(chxn)2Br]Br2 (1; chxn = 1R-2R-diaminocyclohexane) and a 1D Peierls or charge-density-wave insulator [Pd(chxn)2Br]Br2 (2) using stepwise electrochemical growth. It can be considered as the first example of electrochemical liquid-phase epitaxy applied to molecular-based heterostructures with a macroscopic scale. Moreover, atomic-resolution scanning tunneling microscopy images reveal a modulation of the electronic state in the heterojunction region with a length of five metal atoms (~ 2.5 nm), that is a direct evidence for the atomic-scale connection of 1 and 2. This is the first time that the heterojunction in the 1D chains has been shown and examined experimentally at macro- and atomic-scale. This study thus serves as proof of concept for heterojunctions in 1D electronic systems.

Suggested Citation

  • Masanori Wakizaka & Shohei Kumagai & Hashen Wu & Takuya Sonobe & Hiroaki Iguchi & Takefumi Yoshida & Masahiro Yamashita & Shinya Takaishi, 2022. "Macro- and atomic-scale observations of a one-dimensional heterojunction in a nickel and palladium nanowire complex," Nature Communications, Nature, vol. 13(1), pages 1-5, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-28875-8
    DOI: 10.1038/s41467-022-28875-8
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    References listed on IDEAS

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    1. Peter Peumans & Soichi Uchida & Stephen R. Forrest, 2003. "Efficient bulk heterojunction photovoltaic cells using small-molecular-weight organic thin films," Nature, Nature, vol. 425(6954), pages 158-162, September.
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