Carbon Nanotubes in Perovskite Solar Cells

The remarkable optoelectronic properties of hybrid halide perovskite absorbers have, in the past years, made the perovskite solar cell one of the most promising emerging photovoltaic technologies. The charge collecting layers are essential parts of this type of solar cell. Carbon nanotubes have emerged as a potential candidate to take on this role. Equipped with a range of highly beneficial properties including excellent charge transport characteristics, chemical inertness, as well as mechanical robustness, carbon nanotubes are able to both efficiently extract photogenerated charges, and improve the resilience and stability of a perovskite solar cell. Here, a concise overview of the current state‐of‐the‐art of perovskite solar cells, in which carbon nanotubes are incorporated as a charge conduction layer, is provided.