Two-dimensional (2D) transition metal dichalcogenides (TMDs) with layered crystal structures have been attracting enormous research interest for their atomic thickness, mechanical flexibility, and excellent electronic/optoelectronic properties for applications in diverse technological areas. Solution-processable 2D TMD inks are promising for large-scale production of functional thin films at an affordable cost, using high-throughput solution-based processing techniques such as printing and roll-to-roll fabrications. This paper provides a comprehensive review of the chemical synthesis of solution-processable and printable 2D TMD ink materials and the subsequent assembly into thin films for diverse applications. We start with the chemical principles and protocols of various synthesis methods for 2D TMD nanosheet crystals in the solution phase. The solution-based techniques for depositing ink materials into solid-state thin films are discussed. Then, we review the applications of these solution-processable thin films in diverse technological areas including electronics, optoelectronics, and others. To conclude, a summary of the key scientific/technical challenges and future research opportunities of solution-processable TMD inks is provided.

中文翻译：

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可溶液加工且可印刷的二维过渡金属二硫属化物油墨

具有层状晶体结构的二维（2D）过渡金属二硫属化物（TMD）因其原子厚度、机械灵活性和优异的电子/光电性能而吸引了巨大的研究兴趣，适用于不同的技术领域。可溶液加工的 2D TMD 墨水有望利用印刷和卷对卷制造等高通量溶液加工技术，以可承受的成本大规模生产功能性薄膜。本文全面综述了可溶液加工和可印刷的 2D TMD 墨水材料的化学合成以及随后组装成用于各种应用的薄膜的过程。我们从溶液相 2D TMD 纳米片晶体的各种合成方法的化学原理和方案开始。讨论了将墨水材料沉积到固态薄膜中的基于溶液的技术。然后，我们回顾了这些可溶液加工的薄膜在电子、光电子等不同技术领域的应用。最后，总结了可溶液加工 TMD 油墨的关键科学/技术挑战和未来研究机会。