Recent advances in manipulating plasmonic properties of metal/semiconductor heterostructures have opened up new avenues for basic research and applications. Herein, we present a versatile strategy for the assembly of arrays of plasmonic metal/semiconductor hemispherical nanoheterostructures (MSHNs) with control over spacing and size of the metal/semiconductor heterostructure array, which can facilitate a wide range of scientific studies and applications. The strategy combines nanosphere lithography for generating the metal core array with solution-based chemical methods for the semiconductor shell that are widely available and kinetically controllable. Periodic arrays of Au/Cu₂O and Ag/Cu₂O heterostructures are synthesized to demonstrate the approach and highlight the versatility and importance of the tunability of plasmonic properties. The morphology, structure, optical properties, and elemental compositions of the heterostructures were analyzed. This strategy can be important for understanding and manipulating fundamental nanoscale solid-state physical and chemical properties, as well as assembling heterostructures with desirable structure and functionality for applications.

Plasmonic metal/semiconductor heterostructures exhibit unique optoelectronic properties and many applications in energy harvesting, photodetectors, photocatalysts, and optoelectronic devices have been identified. To investigate the plasmon-induced hot-carriers dynamics at the metal/semiconductor interface is a great challenge and understanding the physics behind the

Plasmonic metal/semiconductor heterostructures exhibit unique optoelectronic properties and many applications in energy harvesting, photodetectors, photocatalysts, and optoelectronic devices have been identified. To investigate the plasmon-induced hot-carriers dynamics at the metal/semiconductor interface is a great challenge and understanding the physics behind the

Plasmonic metal/semiconductor heterostructures exhibit unique optoelectronic properties and many applications in energy harvesting, photodetectors, photocatalysts, and optoelectronic devices have been identified. To investigate the plasmon-induced hot-carriers dynamics at the metal/semiconductor interface is a great challenge and understanding the physics behind the