Solar cells combining silicon with perovskite have achieved record efficiency of 25.2 percent

(Ecole Polytechnique Fédérale de Lausanne) In Neuchâtel (Switzerland), researchers from EPFL and CSEM have combined silicon- and perovskite-based solar cells. The resulting efficiency of 25.2 percent is a record for this type of tandem cell. Their innovative yet simple manufacturing technique could be directly integrated into existing production lines, and efficiency could eventually rise above 30 percent.