Multifunctional Applications Enabled by Tunable Multi-Emission and Ultra-Broadband VIS-NIR Luminescence via Energy Transfer in Sn²⁺/Mn²⁺-Doped Lead-Free Zn-Based Metal Halides

Materials Horizons, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Metal halides are widely applied in solid-state lighting (SSL), optoelectronic devices, information encryption, and near-infrared (NIR) detection due to their superior photoelectric properties tunable emission. However, single-component phosphors that can be efficiently excited by light-emitting diode (LED) chips cover both the visible (VIS) NIR emission regions still very rare. To address this issue, (TPA)2ZnBr4:Sn2+/Mn2+ (TPA = [(CH3CH2CH2)4N]+) were synthesized using solvent evaporation method. The Sn2+ doping significantly enhances luminescence of (TPA)2ZnBr4, shifts weak blue light efficient emissions red zones. Spectroscopic studies density functional theory (DFT) calculations reveal attributed different levels 3P1-1S0 [SnBr4]2- tetrahedron caused Jahn-Teller distortion. More importantly, energy transfer from Mn2+ enables ultra-broadband VIS-NIR across 400-1000 nm range, with excitation-dependent characteristics. These suggest has great potential as a high-performance, luminescent material for applications general lighting, source, anti-counterfeiting labels.

Язык: Английский

Long-lasting time-dependent tunable afterglow in Zn₂SiO₄:Mn²⁺ glass ceramics for dynamic anti-counterfeiting

Journal of Materials Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Phase-change-regulated dynamic time-dependent tunable persistent luminescence in α/β-Zn 2 SiO 4 :Mn 2+ embedded glass ceramics.

Язык: Английский