Design strategies of rare-earth luminescent complexes with zero thermal quenching protected by the wire-in-tube structure and the construction of a W-WLED with highly stable illumination and colour reproduction

TbSSA@ZnO/SnO 2 with a wire-in-tube structure is constructed. ZnO/SnO 2 shell effectively protects TbSSA core to resist the high operating temperature of 200 °C. The prepared W-WLEDs can maintain stable illumination under floating driving currents.