Full-color-tunable phosphorescence of antimony-doped lead halide single crystal

Abstract Although multiple emissive phosphors are of great fundamental interest and practical importance, it is still challenging to achieve full-color tunable luminescence in a single-component material. Herein, we present an antimony-doped lead halide single crystal (C 10 NH 22 ) 2 PbBr 4 : Sb 3+ with widely red/green/blue/white luminescence. Extrinsic dopants provide host another active sites capture photo-generated excitons, thus triggering blue/red dual emission. Moreover, reversible thermal-induced phase transition transforms emission into green/red Both two phases exhibit intriguing excitation-wavelength dependent emission, affording whole color gamut covering the red-green-blue (RGB) triangle on CIE 1931 diagram. Experimental theoretical calculation studies reveal emitters work independently, which paves way for multimode optical control promotes development multifunctional luminescent materials.