Wearable displays demand mechanical deformability, long-term stability, multicolour emission, and sufficient brightness. This paper presents a material design strategy and manufacturing process for skin-conformable perovskite-based alternating-current electroluminescent (PEACEL) devices. These devices exhibit narrow emission bandwidth (<37 nm), tunable emission (468–694 nm), high stretchability (400%), and adequate luminance (>200 cd m⁻²). The approach uses PeZS phosphors (ZnS coated with perovskite nanoparticles) for electrical excitation via total intraparticle energy transfer, expanding the color gamut of powder-based ACEL devices by 250%. The PEACEL displays integrate with wearable electronics for applications in dynamic interactive displays and temperature monitoring, offering potential for artificial skins, robotics, and biomedical monitoring.
