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Doping engineering and functionalization of two-dimensional metal chalcogenides.

Peng Luo1, Fuwei Zhuge, Qingfu Zhang

  • 1State Key Laboratory of Material Processing and Die & Mould Technology, School of Material Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China. zhugefw@hust.edu.cn zhaity@hust.edu.cn.

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Summary

Precisely controlling doping in 2D metal chalcogenides (MXs) is key for advanced electronics. This review covers doping strategies like substitution and charge transfer to enhance MX material properties for future devices.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Two-dimensional (2D) layered metal chalcogenides (MXs) show promise for next-generation flexible electronics, optoelectronics, and sensors.
  • Achieving ultimate device performance requires precise control over the physical and chemical properties of 2D MXs through doping engineering.

Purpose of the Study:

  • To review recent advancements in doping engineering strategies for 2D MXs.
  • To discuss various doping mechanisms including substitution, exterior charge transfer, intercalation, and electrostatic doping.
  • To highlight novel doping approaches and their potential applications in functional devices.

Main Methods:

  • Review of literature on doping engineering techniques for 2D MXs.
  • Categorization of doping strategies based on mechanism (substitution, charge transfer, intercalation, electrostatic).
  • Discussion of specific examples like Janus structures, defect curing, and floating gate modulation.

Main Results:

  • Doping engineering enables tailoring of physical and chemical properties of 2D MXs.
  • Novel doping methods lead to unique material structures and functionalities.
  • Examples include Janus structures, defect curing, zero-valent intercalation, and floating gate modulation.

Conclusions:

  • Doping engineering is crucial for unlocking the full potential of 2D MXs in advanced applications.
  • A comprehensive understanding of doping strategies facilitates the development of multifunctional MX-based devices.
  • This review provides guidance on selecting doping strategies and sources for MX functionalization.