A controllable and reversible phase transformation between all-inorganic perovskites for white light emitting diodes†
Abstract
The stable and highly efficient yellow-emitting CsCu2I3 is obtained in a nearly 100% yield based on a controllable and reversible phase transformation between all-inorganic perovskites. This effective strategy is successfully employed to fabricate high-quality electroluminescent white light emitting diodes (WLEDs) for the first time.