Cr³⁺-Doped LiAlO₂ NIR-I Emitting Phosphors with Superior Resistance to Thermal Quenching for Night Vision Monitoring and Bioimaging

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(44), С. 60599 - 60607

Опубликована: Окт. 22, 2024

Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) as a new NIR light source has outstanding application potential in the fields of spectroscopy analysis, sensing, imaging, and pattern recognition. Therefore, development phosphors with good luminescence thermal stability attracted much attention. To this end, we developed LiAlO2:Cr3+ garnet-type by high-temperature solid-state reaction method. Under 405 nm excitation, Cr3+ ions located tetrahedrons LiAlO2 emit emission broadband that covers 650-900 mixed several sharp narrowband R-line emissions, which showed excellent integrated intensity measured at 573 K is ∼90.86% 303 caused structural rigidity low expansion coefficient matrix material. An pc-LED device assembled optimized commercially available purple LED chip emitted output power ∼98.172 mW driving current 300 mA demonstrated an electro-optical conversion efficiency ∼9.09%, while it night vision monitoring biomedical imaging.

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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Recent Advances in Multi-Site Luminescent Materials: Design, Identification and Regulation

Materials, Год журнала: 2023, Номер 16(6), С. 2179 - 2179

Опубликована: Март 8, 2023

The development of novel phosphor materials with excellent performance and modification their photoluminescence to meet the higher requirements for applications are essential research subjects luminescent materials. Multi-site crystallographic sites activator ions that broaden tunable range spectra even enhance have attracted significant attention in pursuit high-quality luminescence white light-emitting diodes. Here, we summarize multi-site characteristics based on different kinds host ions, introduce identifications via optical analysis, provide a structural analysis theoretical calculation methods, regulation strategies advance phosphors. review reveals relationship between crystal structure properties discusses future opportunities This will guidance design or other science.

Язык: Английский

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Regulating Broadband Near‐Infrared Mechanoluminescence via Energy‐Level Engineering for Potential Biomechanical Imaging

Laser & Photonics Review, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 9, 2024

Abstract Near‐infrared mechanoluminescent (NIR ML) materials have attracted attention due to their advantages, such as in situ and real‐time monitoring of biomechanical information vivo. However, most ML are focused on the UV–vis light range, which limits potential applications biological field. In this work, a broadband NIR material Ca 2 YGa 3 Ge O 12 : 0.10Cr 3+ (CYGGG: ) is successfully prepared by chemical co‐substitution Cr heavy doping. Density functional theory (DFT) calculations used determine type defects material, composite formed interstitial oxygen (i ′′) antisite (Ca Y ′ ‐ °) mostly dominate ML. ions act electronic bridges regulate energy levels, becoming key turning Nd ion's Finally, based excellent properties CYGGG: , 0.01Nd composites can penetrate pork tissues different compositions/thicknesses under stress loads. Potentially, work tries realize tissue imaging, providing new way for application materials.

Язык: Английский

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Tunable broadband near-infrared photoluminescence of Mg2LaTaO6:Cr3+ phosphors for light-emitting diodes

Journal of Luminescence, Год журнала: 2023, Номер 266, С. 120314 - 120314

Опубликована: Ноя. 13, 2023

Язык: Английский

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Compositional modulation induced broadband NIR luminescence enhancement in A2ScNbO6:Cr3+ (A = Ba, Sr)

Journal of Molecular Structure, Год журнала: 2023, Номер 1302, С. 137412 - 137412

Опубликована: Дек. 24, 2023

Язык: Английский

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Broadband short-wave near-infrared-emitting phosphor MgNb₂O₆:Cr³⁺ for pc-LED applications

Dalton Transactions, Год журнала: 2024, Номер 53(8), С. 3702 - 3712

Опубликована: Янв. 1, 2024

Novel MgNb 2 O 6 :Cr 3+ phosphors ( D q / B ∼ 1.65) yield broadband short-wave NIR emission peaking at 970 nm (FWHM = 155 nm, IQE ∼85.5%, EQE ∼25.2%). A self-built pc -LED works well for bioimaging, nondestructive detection, intelligent identification, etc .

Язык: Английский

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Fe3+-doped broadband near-infrared phosphor with high quantum efficiency toward multifunctional pc-LEDs applications

Journal of Alloys and Compounds, Год журнала: 2024, Номер 1007, С. 176432 - 176432

Опубликована: Сен. 12, 2024

Язык: Английский

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A Cr3+-Yb3+ co-doped high-efficiency near-infrared luminescent phosphor for NIR-II light source applications

Journal of Alloys and Compounds, Год журнала: 2024, Номер unknown, С. 176625 - 176625

Опубликована: Сен. 1, 2024

Язык: Английский

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Laser-pumped High-power Compact Near-infrared Light Source Based on Phosphor-in-glass Films

Journal of Materials Chemistry C, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

A novel CZTGGZO:Cr 3+ near infrared PiG film has a high IQE (90.20%) and good thermal stability (92.32%@423 K), enabling it to be applied end caries detection long distance illumination.

Язык: Английский

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