Perovskites Heterostructures

Heterostructures offer a route to overcome limitations in charge transport, stability, and spectral tunability in perovskite systems. By engineering combinations of materials, we can create interfaces that give rise to new electronic and optical properties. In lead halide perovskite nanoparticle heterostructures, for example, we can tune band alignment, optimize charge separation, and control charge transfer. We develop synthetic routes that enable controlled interface formation, allowing us to investigate how nanoscale structure–property relationships dictate excitonic behavior, charge carrier dynamics, and material stability. Using advanced characterization techniques, we explore how these interfaces affect both structure and function to advance next-generation optoelectronic applications. Our research includes a variety of heterostructure architectures, ranging from single interfaces between perovskite and semiconductor, metal oxides, or organics to systems with periodically repeating internal interfaces that are a part of their structure.