Janus transition metal dichalcogenides (JTMDs) have garnered significant interest from the scientific community owing to their remarkable physical and chemical features. The existence of intrinsic dipoles makes them different from conventional transition metal dichalcogenides. These properties are useful in various potential applications, including energy storage, energy generation, and other electronic devices. The JTMDs are considered a hot topic in two dimensional (2D) materials research, making it necessary to understand their fundamental properties and potential use in various applications. This review covers the fundamental difference between Janus and conventional transition metal dichalcogenide‐based 2D materials. This discussion encompasses the characteristics of monolayer, bilayer, and multilayer materials, focusing on their structural stability, electronics properties, optical properties, piezoelectricity, and Rashba effects. The impact of external stimuli such as strain and electric field toward engineering the ground state properties of monolayer JTMDs is discussed. Additionally, various potential applications of Janus monolayers, including gas sensors, catalysis, electrochemical energy storage, thermoelectric, solar cells, and field effect transistors, are highlighted, emphasizing enhancing their performance. Finally, the prospects of Janus 2D materials for next‐generation electronic devices are highlighted.

中文翻译：

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过渡金属二硫属化物 Janus 单层的物理化学研究进展：性能、应用及未来展望


Janus 过渡金属二硫化物 （JTMD） 因其卓越的物理和化学特性而引起了科学界的极大兴趣。本征偶极子的存在使它们不同于传统的过渡金属二硫化物。这些特性可用于各种潜在应用，包括储能、能源生产和其他电子设备。JTMD 被认为是二维 （2D） 材料研究的热门话题，因此有必要了解它们的基本特性和在各种应用中的潜在用途。这篇综述涵盖了 Janus 与传统过渡金属二硫化物基 2D 材料之间的根本区别。本讨论包括单层、双层和多层材料的特性，重点介绍它们的结构稳定性、电子特性、光学特性、压电和 Rashba 效应。讨论了外部刺激（如应变和电场）对单层 JTMD 基态特性工程的影响。此外，还强调了 Janus 单层膜的各种潜在应用，包括气体传感器、催化、电化学储能、热电、太阳能电池和场效应晶体管，强调提高其性能。最后，重点介绍了 Janus 2D 材料在下一代电子设备中的前景。