Non-destructive buffer enabling near-infrared-transparent inverted inorganic perovskite solar cells toward 1400 h light-soaking stable perovskite/Cu(In,Ga)Se2tandem solar cells

Metal oxide nanoparticle films were prepared by spin-coating method, which can be used as a sputter damage-free buffer layer for all-inorganic PSCs, and near-infrared transparent PSCs were successfully prepared with excellent stability.