Printing a 30% solar cell Perovskite-silicon tandem solar cells are the leading candidate to push panels past the limits of silicon alone, but many record cells are made with lab-scale methods that do not translate easily to factories. According to TaiyangNews, researchers at Germany's Karlsruhe Institute of Technology (KIT) have now demonstrated a perovskite-silicon tandem cell with 30.2% efficiency using a process built around inkjet printing, which they describe as the first time such a cell...