According to KIER, its technology represents a world record for lightweight, flexible tandem perovskite-CIGS devices. However, an independent third-party entity has not yet confirmed the results.
“The lift-off process developed by the research team involves coating a polyimide layer onto a glass substrate, fabricating the perovskite-CIGS tandem solar cell on top of it, and then separating it from the glass,” KIER said in a statement.