Stability and Performance of Nanostructured Perovskites for Light‐Harvesting Applications

Abstract Halide perovskites in general and organometal‐halide perovskites in particular have become an intensely researched topic due their excellent optical properties, cheap production costs, and easy fabrication procedures. A high absorption coefficient, paired with a direct bandgap and a wide variety of accessible deposition method, makes these perovskites an excellent materials class for use in a plethora of applications, ranging from solar cells to light‐emitting diodes, and image sensors with architectures of varying length scales ranging from simple thin‐film solid‐state solar cells to highly ordered nanostructured solar cells and sensors. A downside of perovskites is their poor stability when subjected to ambient conditions as a consequence of poor encapsulation which, can be countered by using a nanostructured as additional encapsulation. In this work, different approaches to fabricate nanostructured perovskite‐based light harvesting devices are outlined and the influences of nanostructuring on the performance and stability of the incorporated perovskites are discussed, as well as future research perspectives being highlighted.