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Breakthrough in 2D Materials: New “Metal Swap” Method Revolutionizes Electronic Devices

Breakthrough in 2D Materials: New “Metal Swap” Method Revolutionizes Electronic Devices

Science News

Tokyo, Japan – Researchers from the Tokyo University of Science, in collaboration with several international institutes, have pioneered a groundbreaking “transmetallation” technique, paving the way for a new era in ultrathin electronic devices. Published in the journal Angewandte Chemie International Edition on January 05, 2024, their study introduces a novel method for creating lateral heterostructures using 2D coordination nanosheets, a significant leap in the field of 2D materials research.

The Challenge of Lateral Heterostructures

Two-dimensional (2D) materials, due to their unique electrical, photochemical, and magnetic properties, have been at the forefront of scientific research.

Moreover, lateral heterostructures, particularly useful in electronics, are notoriously difficult to fabricate. This research offers a solution through a new transmetallation technique, enabling the synthesis of in-plane heterojunctions using Zn3BHT coordination nanosheets.

The Transmetallation Technique

Led by Professor Hiroshi Nishihara of Tokyo University of Science, the team demonstrated that by immersing Zn3BHT nanosheets in aqueous copper and iron ion solutions, heterostructures with in-plane heterojunctions can be easily fabricated. This process, remarkably different from conventional high-temperature semiconductor methods, is simple, inexpensive, and can be conducted at room temperature and atmospheric pressure.

Potential for Ultralarge-Scale Integrated Circuits

The study’s most promising application lies in the creation of ultrathin rectifying elements vital for ultralarge-scale integrated circuits. The versatility of the Zn3BHT coordination nanosheet allows for easy modification of its characteristics, opening doors to integrated circuits crafted from a single sheet, without patchworking different materials.

Versatile Electronic Properties

The transmetallation reaction permits the creation of various electronic junctions, such as p-n, MIM, and MIS, and bonding single-layer topological insulators. This enables new electronic devices like electron splitters and multilevel devices, previously only theoretical.

Conclusion: A Leap Forward in 2D Material Research

The success of this method marks a significant advancement in 2D materials research, offering a scalable and cost-effective approach to fabricate electronic devices with unprecedented thinness and efficiency. The collaborative effort involved Tokyo University of Science, the University of Cambridge, the National Institute for Materials Science, Kyoto Institute of Technology, and the Japan Synchrotron Radiation Research Institute, highlighting the global interest in this promising field.

Title of original paper: Lateral Heterometal Junction Rectifier Fabricated by Sequential Transmetallation of Coordination Nanosheet

Journal: Angewandte Chemie International Edition

DOI: https://doi.org/10.1002/anie.202318181

Tokyo University of Science

Breakthrough in 2D Materials: New “Metal Swap” Method Revolutionizes Electronic Devices