Low thermal quenching of metal halide-based metal–organic framework phosphor for light-emitting diodes

Chemical Science, Год журнала: 2024, Номер 15(35), С. 14202 - 14208

Опубликована: Янв. 1, 2024

A green MOF phosphor can maintain 84% of its initial emission intensity after being heated to 150 °C, exceeding several commercial inorganic phosphors.

Язык: Английский

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Photoluminescence properties of Ni2+-doped double perovskite A2MgTiO6 (A = La/Lu) phosphor with NIR-II emission for spectral analysis application

Optical Materials, Год журнала: 2025, Номер unknown, С. 116792 - 116792

Опубликована: Фев. 1, 2025

Язык: Английский

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Lattice constraint induced Cr4+ selective substitution for broadband NIR-Ⅱ emitting in composition detection application

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Zero-thermal-quenching broadband NIR-II emitting Mg4Nb2O9: Ni2+ phosphor via defective engineering and multi-site occupation

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 179519 - 179519

Опубликована: Март 1, 2025

Язык: Английский

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Broadband near-infrared phosphor LiTi₂(PO₄)₃:xCr³⁺ realized via multi-site occupation

Physical Chemistry Chemical Physics, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The synthetic fluorescent phosphor has a wide FWHM, which realized the application of non-destructive detection.

Язык: Английский

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Direct Blue‐LED Pumped Broadband Long‐Wavelength Near‐Infrared Emitter Based on Ni²⁺ Mono‐Doped Double Perovskite Materials for Versatile Optical Applications

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Abstract Long‐wavelength near‐infrared (NIR) phosphors (1000–2000 nm) have shown great promise in intelligent NIR spectroscopy technology fields. However, developing capable of directly absorbing blue light and emitting over 1000 nm still remains a significant challenge. Here, series ultra‐broadband with emission peaks longer than 1500 is achieved by incorporating single activator Ni 2+ ion into ALaMgMO 6 (A = Ca, Sr, Ba; M Sb, Nb, Ta) double perovskite hosts. Significantly, through composition modulation strategy, the designed exhibit an intense absorption band centered at 440 nm, making these mono‐doped pumped commercial LED chips without strictly introducing sensitized ions or energy transfer process. The origination effective blue‐light excitable NIR‐II to NIR‐III phosphor unraveled Rietveld structural refinement local symmetry analysis. Additionally, developed demonstrated potential spectroscopic analysis, night‐vision technology, non‐destructive visualization, information encryption identification. This work provides feasible strategy solve problem that ‐doped cannot be can promote development more long‐wavelength materials for multiple photonic applications.

Язык: Английский

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Impact of normal and inverse spinel structure evolution induced by co-substitution of chemical units on the luminescence properties of Ni2+-Activated Gallium Titanate Phosphor NIR-II

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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Achieving Blue Light Excitation and Broadband NIR-II Region Emission Regulation of ALaMgSbO: Ni2+ (A=Ca, Sr, Ba) Phosphors

Journal of Luminescence, Год журнала: 2025, Номер unknown, С. 121237 - 121237

Опубликована: Апрель 1, 2025

Язык: Английский

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Ultra-broadband NIR emission of Ni2+ doped Sr2ScTaO6 phosphors via multi-site occupancy for application in NIR spectroscopy

Applied Materials Today, Год журнала: 2025, Номер 44, С. 102731 - 102731

Опубликована: Апрель 22, 2025

Язык: Английский

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Structural Rigidity Control via Non-Primary Lattice Substitution toward Thermally Stable Cr³⁺-Doped Near-Infrared Phosphors for pc-LED Applications

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер unknown

Опубликована: Май 22, 2025

The performance of near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) is dependent on the phosphor applied to LED surface; however, challenges low external quantum efficiency (EQE) and insufficient thermal stability NIR phosphors remain. Herein, we propose a novel nonprimary lattice substitution strategy (Y3+ → Gd3+) enhance structural rigidity Gd1-yAl3-x(BO3)4:xCr3+,yY3+ phosphor. Unlike conventional host-site substitutions, this approach induces compressive strain [Al/CrO6] octahedron via Gd3+/Y3+ size mismatch, thereby increasing bond energy suppressing electron-phonon coupling. optimized emits light in range 650-1000 nm under 430 excitation, with (@423 K) improving from 73.8% 92.5%, EQE effectively improved. A prototype pc-LEDs fabricated 450 chip delivers 40.4 mW output power at 100 mA 14.7% photoelectric efficiency, demonstrating ultralow quenching rate (<6% intensity loss after 30 days operation). was used butter lettuce cultivation experiments, results showed that growth pattern changed significantly biomass increased (28.9%). In addition, potential for application organic detection demonstrated. This work provides engineering route design stable multifunctional photovoltaic applications.

Язык: Английский

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