Fig. 1: WLEDs relying on a single emissive layer of a heterophase cesium lead halide perovskite. | Light: Science & Applications

Fig. 1: WLEDs relying on a single emissive layer of a heterophase cesium lead halide perovskite.

From: Towards next generation white LEDs: optics-electronics synergistic effect in a single-layer heterophase halide perovskite

Fig. 1

a Scheme of the WLED structure relying on a synergistic effect of α- and δ-CsPbI3 perovskite heterophases. b Broad electroluminescence spectrum of the WLED; photograph in the inset shows its uniform white emission. c Charge transfer and recombination mechanism operative in the α/δ-CsPbI3 heterophase WLED (STE stays for “self-trapped exciton”)

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