Mixed-Ligand Engineering to Enhance Luminescence of Mn2+-Based Metal Halides for Wide Color Gamut Display

Materials, Journal Year: 2024, Volume and Issue: 17(18), P. 4459 - 4459

Published: Sept. 11, 2024

Lead-free Mn2+-based metal halide materials are now being considered as clean candidates for backlight displays and lights due to the d–d transition, diverse components, environmental friendliness. Therefore, efficient stable phosphors in great demand practical applications. In this work, adopting mixed-ligand strategy, a series of [(CH3)4N]2−x[(C2H5)4N]xMnCl4 were synthesized by mechanochemical process. With increase molar ratio (CH3)4N/(C2H5)4N, phase is transformed from orthorhombic tetragonal. Compared [(CH3)4N]2MnCl4 [(C2H5)4N]2MnCl4 phosphors, strategy significantly boosts green emission intensity phosphors. The obtained [(CH3)4N][(C2H5)4N]MnCl4 exhibit high photoluminescence quantum yield (PLQY) 83.78% under 450 nm excitation, which attributed modulation adjacent [MnCl4]2- distance using different chain length organic cations, effectively suppressing non-radiative recombination. Additionally, at 516 nm, narrow full width half-maximum (FWHM) 45.53 good thermal stability. constructed white light-emitting diode (WLED) device exhibits wide color gamut 108.3% National Television System Committee, demonstrating suitability emitter WLED lightings. This work provides new way modulate PL performance manganese-based halides application optoelectronic field.

Language: Английский

Synchronously improved luminescence efficiency and thermal stability of organic–inorganic chloride single crystals through doping of Sb³⁺

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

Synchronously improved luminescence efficiency and thermal stability of (CH 3 ) 4 NMnCl :Sb 3+ crystals through doping Sb exhibits potential applications in white LEDs.

Language: Английский