Highly adaptable plant cultivation light sources enabled by thermally stable lead-free halide double perovskites

Lead-free halide double perovskites have attracted significant attention due to various exceptional photoelectric properties. Nevertheless, there is a lack of blue and red light in plant growth, it is worthwhile to look for blue-red dual-emission phosphors with greater thermal stability and high quantum efficiency for creating light-emitting diodes (LEDs) for plant growth. By introducing Sb 3+ and Mn 2+ ions into Cs 2 NaLuCl 6 , which achieves light ranging from blue (455 nm) to red (630 nm) emission. The intensity of prepared material could maintain 70 % of 80 K at 470 K and perform good thermal stability. Additionally, the resemblance between the spectra of the prepared LEDs and the spectra of the Action Spectrum, β-Carotene, Chlorophyll a , and Chlorophyll b , was 75.8 %, 81.9 %, 79.4 %, and 94.7 % respectively, showing a good matching degree, indicating that the samples have a promising application potential in plant growth.