A Scheme with the WLED structure counting on a synergistic outcome of α- and δ-CsPbI3 perovskite heterophases. b Broad electroluminescence spectrum on the WLED; photograph inside the inset demonstrates its uniform white emission. A novel strategy on the heterophase optics-electronics synergistic influence has long been shown in a single-layer α/δ-heterophase https://russelld936ygm9.theblogfairy.com/profile