Highly Luminescent Zero-Dimensional Organic Metal (Zn, Mn) Alloyed Halides as Single-Component Yellow Phosphor for White LED Applications

ACS Applied Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 12, 2025

Zero-dimensional organic zinc halides have garnered significant attention as efficient and eco-friendly photoluminescent materials. However, its luminance efficiency, which is typically attributed to self-trapped excitons formed within halide tetrahedra, often encounters a serious thermal quenching problem. This issue significantly limits application in the field of solid-state lighting. Intriguingly, incorporation tetra-coordinated Mn2+ ions into these can effectively mitigate unnecessary electron interactions nonradiative energy transfer between Mn–Mn, achieving improved photoluminescence quantum yield (PLQY) alloyed In this work, series zero-dimensional Mn2+-alloyed 4-benzylpiperidinum chloride hybrids were designed synthesized by solvent evaporation method. It noteworthy that pure shows negligible visible emission at 510 nm, whereas (C12H12N)2MnxZn1–xCl4 (x = 0.25, 0.5, 0.75, 1) emits light ranging from green yellow room temperature. Incorporating Mn has led remarkable enhancement PLQY, increasing mere 4.02% an impressive 94.45% (C12H12N)2Mn0.75Zn0.25Cl4. The white LED was successfully fabricated employing optimal sample single-component phosphor coated on 450 nm chip. correlated color temperature determined be 4770 K with rendering index high 91. also demonstrated good luminous stability under different working currents. research provides straightforward approach for developing eco-friendly, cost-effective, high-performance phosphors applications.

Язык: Английский

Research Progress on Quantum Dot-Embedded Polymer Films and Plates for LCD Backlight Display

Polymers, Год журнала: 2025, Номер 17(2), С. 233 - 233

Опубликована: Янв. 17, 2025

Abstract: Quantum dot–polymer composites have the advantages of high luminescent quantum yield (PLQY), narrow emission half-peak full width (FWHM), and tunable spectra, broad application prospects in display lighting fields. Research on dots embedded polymer films plates has made great progress both synthesis technology optical properties. However, due to shortcomings dots, such as cadmium selenide (CdSe), indium phosphide (InP), lead halide perovskite (LHP), poor water, oxygen, light stability, incapacity for large-scale synthesis, their practical is still restricted. Various polymers, methyl methacrylate (PMMA), polyethylene terephthalate (PET), polystyrene (PS), polyvinylidene fluoride (PVDF), polypropylene (PP), etc., are widely used packaging dot materials because plasticity, simple curing, chemical good compatibility with materials. This paper focuses development field backlight displays, summarizes expounds strategies, advantages, disadvantages different materials, provides inspiration optimization promotes wide-color-gamut display.

Язык: Английский

Dual-emission and enhanced stable nanocomposites by encapsulating CsPbBr3 quantum dots in mesoporous GdF3:Eu3+ spheres for LED applications

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179795 - 179795

Опубликована: Март 1, 2025

Язык: Английский