A Nontoxic and Environmentally Friendly NIR‐II Phosphor for Night Vision, Bio‐Imaging, Large‐Scale Detection, and Information Anti‐Counterfeiting with High‐Resolution Imaging DOI
Fengmei Zhu, Yuan Gao, Jianbei Qiu

и другие.

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Abstract Near‐infrared second region (NIR‐II, 1000–1600 nm) has deeper penetration depth, higher sensitivity, and spatial resolution than NIR first (NIR‐I, 700–1000 nm). However, Cr 3+ Ni 2+ ‐doped NIR‐I/NIR‐II phosphor with serious pollution toxicity issues pose limitations for the application of these phosphors. Here, Fe Cs 2 NaLuCl 6 is reported by grinding‐sintering method, which shows broadband emission in range nm a FWHM ≈309 nm, while PLQY as 17.29%, under 395 excitation. The unique this originates from activation center located an environment extremely weak octahedral crystal field provided lattice. A pc‐LED device assembled optimal encapsulated commercially available ultraviolet LED chip. Which output 23.5 mW electro‐optical conversion efficiency 6.53% 100 mA driving current, potential demonstrated night vision, bio‐imaging, large‐scale detection, information anti‐counterfeiting high‐resolution imaging.

Язык: Английский

Sr2AlTaO6: Ni2+ phosphors with excellent IQE and thermal stability as NIR-II source for night vision, nonvisual detection, and far-field imaging DOI
Fengmei Zhu, Yuan Gao,

J. F. Qiu

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер 505, С. 159559 - 159559

Опубликована: Янв. 13, 2025

Язык: Английский

Процитировано

7
Fe3+-activated BaZrO3 with broadband NIR-II phosphor for large-area Illumination, non-visual and biomedical imaging DOI
Yi Zhang, Fengmei Zhu, Hao Song

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161473 - 161473

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

4
Orthoboric Acid as Sintering Flux Improved Emission Efficiency and Thermal Stability of Ni2+-doped SrTiO3 Perovskite NIR-II Phosphor DOI
Fengmei Zhu, Yuan Gao,

Xirui Lu

и другие.

Ceramics International, Год журнала: 2024, Номер unknown

Опубликована: Дек. 1, 2024

Язык: Английский

Процитировано

4
Synthesis of Cr3+-doped Al2O3 in nanoscale for bio-labels in myocardial cells DOI Creative Commons
Sida Chen,

Jian Hou,

Yang Huang

и другие.

Heliyon, Год журнала: 2025, Номер 11(1), С. e41701 - e41701

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Efficient Ba2NaNb5O15:Cr3+,Yb3+ nanocrystals embedded transparent glass-ceramics toward night-vision application DOI
Wenbo Ji, Fengmei Zhu, Yuan Gao

и другие.

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0
Near-Infrared Luminescence of Cr3+-Doped Ba2NaNb5O15 Embedded in Transparent Glass-Ceramics as Solid-State Illumination for Night-Vision Imaging DOI
Wenbo Ji, Fengmei Zhu, Yuan Gao

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер 17(19), С. 28366 - 28373

Опубликована: Май 6, 2025

Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs), a widely used NIR light source, are typically prepared by sealing the phosphor powder and an LED chip with epoxy resin. One issue that pc-LEDs frequently encounter is aging deterioration of resin over time, which leads to self-absorption sharp decline in emission efficiency. Here, we report synthesis chemically stable luminescent material composed Cr3+-doped Ba2NaNb5O15 nanocrystals measuring 10-15 nm, Cr3+ ions located octahedral centers nanocrystals. Under 460 nm excitation, transparent glass-ceramic exhibited broadband range 600-1400 originated from electronic transition excited state 4T2 ground 4A2. The peak was at ∼810 FWHM ∼230 internal quantum efficiency reached ∼0.81%. We constructed pc-LED device using optimized NIR-emitting glass-ceramics commercially available blue chip, demonstrating its promising application night-vision lighting. Our study provides basis for preparation glass-ceramic-based devices as improved alternative solid-state illumination.

Язык: Английский

Процитировано

0
Fe3+/Yb3+ Co‐Activated MgGa2O4 Phosphor as Widely Near‐Infrared Lighting for Night‐Vision, Non‐Destructive Imaging, and Plant Cultivation DOI
Yi Zhang, Fengmei Zhu, Run Zhao

и другие.

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Abstract Fe 3+ as an activator for Near‐infrared (NIR) phosphors has the advantages over Cr and Ni 2+ due to its abundant resource, low cost, nontoxic, eco‐friendly features, making it a luminescence candidate with huge commercial potential. However, most reported ‐activated have relatively narrow NIR emission of 600–950 nm may limit their applications. Here, new strategy is expand bandwidth by co‐doping Yb in MgGa 2 O 4 phosphor exhibited broadband that covering nm, attributed transition : T 1 (4G)→ 6 A (6S), sharp band 950–1100 F 5/2 → 7/2 , which extended range nearly ≈ 150 compared phosphor, while energy transfer between demonstrated. It internal quantum efficiency 48.9%, thermal stability measured intensity at 423 K 69.57% 293 K. An pc‐LED device prepared lighting source night‐vision, non‐destructive imaging, plant cultivation are This study provides extend wavelength nontoxic phosphors.

Язык: Английский

Процитировано

0
A Nontoxic and Environmentally Friendly NIR‐II Phosphor for Night Vision, Bio‐Imaging, Large‐Scale Detection, and Information Anti‐Counterfeiting with High‐Resolution Imaging DOI
Fengmei Zhu, Yuan Gao, Jianbei Qiu

и другие.

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 21, 2025

Abstract Near‐infrared second region (NIR‐II, 1000–1600 nm) has deeper penetration depth, higher sensitivity, and spatial resolution than NIR first (NIR‐I, 700–1000 nm). However, Cr 3+ Ni 2+ ‐doped NIR‐I/NIR‐II phosphor with serious pollution toxicity issues pose limitations for the application of these phosphors. Here, Fe Cs 2 NaLuCl 6 is reported by grinding‐sintering method, which shows broadband emission in range nm a FWHM ≈309 nm, while PLQY as 17.29%, under 395 excitation. The unique this originates from activation center located an environment extremely weak octahedral crystal field provided lattice. A pc‐LED device assembled optimal encapsulated commercially available ultraviolet LED chip. Which output 23.5 mW electro‐optical conversion efficiency 6.53% 100 mA driving current, potential demonstrated night vision, bio‐imaging, large‐scale detection, information anti‐counterfeiting high‐resolution imaging.

Язык: Английский

Процитировано

0