A novel halide hybrid white light emitter with remarkable structural and emission stability

Abstract Addressing the issues of self-absorption effect among different components in traditional white light-emitting diodes (WLEDs) and the high cost associated with rare earth elements, we propose the potential utility of zero-dimensional organic–inorganic metal halide hybrids (0D OIMHs) in white WLEDs fabrication. In this study, we synthesized a novel 0D OIMH, (C 5 N 2 H 14 )ZnCl 4 , characterized by broadband white light emission. The (C 5 N 2 H 14 )ZnCl 4 crystal features a short ultraviolet cutoff situated at 190 nm and emits cold white light with a Color Rendering Index (CRI) of 73 under an excitation wavelength of 260 nm. Furthermore, (C 5 N 2 H 14 )ZnCl 4 demonstrates exceptional structural and emission stability in an air atmosphere over a span of three months.