Van der Waals (vdW) heterostructures based on transition metal dichalcogenides (TMDs) generally possess a type-II band alignment that facilitates the formation of interlayer excitons between constituent monolayers. Manipulation of the interlayer excitons in TMD vdW heterostructures holds great promise for the development of excitonic integrated circuits that serve as the counterpart of electronic integrated circuits, which allows the photons and excitons to transform into each other and thus bridges optical communication and signal processing at the integrated circuit. As a consequence, numerous studies have been carried out to obtain deep insight into the physical properties of interlayer excitons, including revealing their ultrafast formation, long population recombination lifetimes, and intriguing spin-valley dynamics. These outstanding properties ensure interlayer excitons with good transport characteristics, and may pave the way for their potential applications in efficient excitonic devices based on TMD vdW heterostructures. At present, a systematic and comprehensive overview of interlayer exciton formation, relaxation, transport, and potential applications is still lacking. In this review, we give a comprehensive description and discussion of these frontier topics for interlayer excitons in TMD vdW heterostructures to provide valuable guidance for researchers in this field.

基于过渡金属二卤化物（TMD）的范德华（vdW）异质结构通常具有II型能带排列，可促进构成单层之间的层间激子的形成。在TMD vdW异质结构中操纵层间激子为激子集成电路的发展提供了广阔的前景，激子集成电路可作为电子集成电路的对应物，从而使光子和激子相互转化，从而架桥了光通信和信号处理之间的桥梁。集成电路。结果，已经进行了许多研究来深入了解层间激子的物理性质，包括揭示它们的超快形成，长的群体重组寿命以及令人感兴趣的自旋谷动态。这些出色的性能可确保层间激子具有良好的传输特性，并可能为其在基于TMD vdW异质结构的高效激子器件中的潜在应用铺平道路。目前，仍然缺乏对层间激子形成，弛豫，传输和潜在应用的系统和全面的概述。在这篇综述中，我们对TMD vdW异质结构中层间激子的这些前沿话题进行了全面的描述和讨论，为该领域的研究人员提供了宝贵的指导。运输，仍然缺乏潜在的应用程序。在这篇综述中，我们对TMD vdW异质结构中层间激子的这些前沿话题进行了全面的描述和讨论，为该领域的研究人员提供了宝贵的指导。运输，仍然缺乏潜在的应用程序。在这篇综述中，我们对TMD vdW异质结构中层间激子的这些前沿话题进行了全面的描述和讨论，为该领域的研究人员提供了宝贵的指导。