New perovskite cells hit 33.64% efficiency with a molecular tweak

Researchers have achieved a certified power conversion efficiency of 33.64% in perovskite solar cells through a specific molecular adjustment, bringing the technology closer in performance to established silicon-based cells. This advance centers on inducing a transition from p-type to n-type behavior in two-dimensional perovskites using parahalogenated piperidine derivatives, a method designed to improve energy alignment and minimize energy loss. These perovskite/silicon tandem cells also demonstrated…