Bismuth activated full spectral double perovskite luminescence materials by excitation and valence control for future intelligent LED lighting.

A novel La₂Mg_1.14Zr_0.86O₆:Bi³⁺ double perovskite phosphor with excitation-induced blue/green photoluminescence tuning is reported. By designing Bi³⁺ → Eu³⁺ energy transfer, single-composition white light with wide-scale adjustable corrected color temperatures (CCTs) is successfully achieved. This work initiates a new insight to explore phosphors with excitation-induced photoluminescence tuning and wide CCT control for future intelligent LED lighting. [ABSTRACT FROM AUTHOR]