Heterodimensional Superlattices: Preparation, Properties, and Applications
Heterodimensional superlattices, integrating materials of different dimensionalities (e.g., 0D, 1D, 2D) within a periodic structure, have attracted significant attention due to their unique electronic structures and emergent properties arising from inter-dimensional coupling. This review comprehensively summarizes the state-of-the-art preparation strategies, distinctive physical properties, and diverse applications of these emerging systems. Beyond conventional epitaxial growth and chemical intercalation methods, recent advances include van der Waals assembly and phase engineering, enabling precise control over layer stacking and interfacial interactions. Key properties discussed include tunable electronic band structures, enhanced spin-orbit coupling, and emergent phenomena such as the in-plane Hall effect, which are promising for spintronic devices. The review also highlights applications in energy storage and conversion, where heterodimensional superlattices exhibit improved ion transport and catalytic activity. Challenges remain in scalable fabrication and structural stability, but the field holds potential for next-generation electronics and energy technologies.