A novel single-phase white light emission phosphor for healthy lighting, anti-counterfeiting, and plant lighting

Journal of Molecular Structure, Journal Year: 2025, Volume and Issue: unknown, P. 141430 - 141430

Published: Jan. 1, 2025

Language: Английский

Novel rare-earth doped Cs2NaGdCl6:Sb3+ double perovskite nanocrystals toward good ability of color tuning with high quantum efficiency

The Journal of Chemical Physics, Journal Year: 2025, Volume and Issue: 162(16)

Published: April 22, 2025

All-inorganic halide double perovskites have attracted extensive attention as new luminescent materials owing to their high luminous efficiency and wide emission spectrum. In this work, blue-red bicolor Cs2NaGdCl6 (CNGC) perovskite nanocrystals doped with Sb3+/Ho3+ were prepared using a hydrothermal method. The incorporation of Sb3+ significantly enhanced the intrinsic “self-trapped excitons (STEs)” wide-band bright blue centered at 470 nm. On basis, different concentrations Ho3+ introduced achieve color tunable from red region, extremely quantum efficiencies 96.53% 92.17%, respectively. By use diverse methods, including spectroscopic analysis fluorescence lifetime, mechanism efficient luminescence related dopant was comprehensively explored. Results show that not only can enhance STEs CNGC but also has an activation effect on rare earth ion Ho3+, because it plays role bridge for two energy transfer channels between centers, details investigated. Thermal stabilities studied over temperature range 303–473 K good performances demonstrated fact PL intensities CNGC:1%Sb3+ CNGC:1%Sb3+/10%Ho3+ 423 75.1% 70.1% compared those 303 K, With CNGC:1%Sb3+/10Ho3+ used, UV light-emitting diode activated devices fabricated characterized. emissions suggest materials’ prominent potential in application plant lighting. Finally, white-light sole matrix, strategy tri-doping Tb3+ proposed based principle three primary colors. device fabrication CNGC:1%Sb3+/10%Ho3+/2.5%Tb3+ sample characterization processes prove its feasibility then provide valuable insights design Sb ion-doped lead-free toward easily which be applied various fields.

Language: Английский

A Novel Single-Phase White Light Emission Phosphor and its Multifunctional Applications

Published: Jan. 1, 2024

Language: Английский