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

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: 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

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: 505, P. 159559 - 159559

Published: Jan. 13, 2025

Language: Английский

Citations

4
Cr3+-Doped LiAlO2 NIR-I Emitting Phosphors with Superior Resistance to Thermal Quenching for Night Vision Monitoring and Bioimaging DOI
Fengmei Zhu,

Yuan Gao,

J. F. Qiu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(44), P. 60599 - 60607

Published: Oct. 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.

Language: Английский

Citations

5
Zero-thermal-quenching broadband NIR-II emitting Mg4Nb2O9: Ni2+ phosphor via defective engineering and multi-site occupation DOI
Hua Yu,

Zhexuan Gao,

Huanping Wang

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 179519 - 179519

Published: March 1, 2025

Language: Английский

Citations

0
Fe3+-activated BaZrO3 with broadband NIR-II phosphor for large-area Illumination, non-visual and biomedical imaging DOI
Yi Zhang, Fengmei Zhu, Hao Song

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161473 - 161473

Published: March 1, 2025

Language: Английский

Citations

0
Rare-earth free far-red-emitting Li1.5La1.5TeO6:Mn4+ phosphors for transparent phosphor film-based light projection application DOI
Jun Kyu Lee,

Weiwei Xiang,

Jae Su Yu

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180323 - 180323

Published: April 1, 2025

Language: Английский

Citations

0
Cr3+/Yb3+ Codoped Cs2NaInCl6 Double Perovskites for Near-Infrared Light-Emitting Diodes DOI
Xinyu Fu,

Huwei Li,

Hongxia Yue

et al.

Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Near-infrared (NIR) light-emitting diodes (LEDs) are potential devices that could become the core components in biological imaging, security monitoring, etc., which currently constrained by suboptimal luminous efficiency due to absence of excellent luminescent materials. Here, we report a double perovskite Cs2NaInCl6 is suitable for Cr3+ doping and exhibits broad NIR emission. Through direct absorption energy transfer (ET) from self-trapped excitons (STEs) induced matrix, can be excited 4T1(P), 4T1(F), 4T2(F) levels. Then, emission with full width at half-maximum (FWHM) ∼150 nm, spanning 800 1300 high photoluminescence quantum yield (PLQY) up 70% realized, resulting 4T2→4A2 transition Cr3+. Subsequently, introduction Yb3+ endows Cs2NaInCl6:Cr3+,Yb3+ higher PLQY 76% optimal ratio than Cs2NaInCl6:Cr3+. Ultimately, miniaturized LED device packaged based on Cs2NaInCl6:15%Cr3+,15%Yb3+ has been fabricated, demonstrates superior performance night vision, traceless perspective detection, imaging. This work not only screens out matrix but also promotes its luminescence through applications.

Language: Английский

Citations

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

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

Citations

0
Antithermal-Quenching Near-Infrared Emitting Lu2SrAl4SiO12:Cr3+ Garnet-Type Phosphor for High-Resolution Nonvisual Imaging DOI
Fengmei Zhu, Yuan Gao,

Qiu Jianbei

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(46), P. 63831 - 63839

Published: Nov. 12, 2024

Near-infrared (NIR) light allows fast and nondestructive detection with deep penetration into biological tissues is widely used in food inspection, biomedical imaging, night vision security, other fields. Cr3+-doped NIR first region (NIR-I) phosphors have many interesting features that attracted a lot of attention recently. However, practical issues, such as low photoluminescence quantum efficiency poor thermal stability, need to be addressed. We synthesized Lu2SrAl4SiO12 garnet-type using high-temperature solid-state reaction method. Under blue-light (@ 430 nm) excitation, the exhibited broadband NIR-I emission range 600–1000 nm, an peak at 710 nm. This system unique, had multipeak sharp-line superposition Cr3+ ions were situated relatively strong crystal field environment, opposed weak environment for matrix. The optimal doping content was 2 mol %, its internal ∼76.8%. Surprisingly, this phosphor showed antithermal quenching effect, integrated luminescence intensity measured 573 K 206.3% 303 K. found caused by extremely expansion coefficient rigid structure matrix temperature range, well weakening electron–phonon coupling increasing temperature. optimized packaged blue chip phosphor-converted light-emitting diode device. source device output power 119.02 mW electro-optical conversion 11.02% under driving current 300 mA. application potential demonstrated high-resolution imaging.

Language: Английский

Citations

3
A novel 410 nm excitable Y3Ga3MgSiO12: Ni2+ garnet phosphor for ultra-wide broadband emission toward NIR III region and its application DOI
Qian Zhang,

Sihan Feng,

Xuyan Xue

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 180089 - 180089

Published: April 1, 2025

Language: Английский

Citations

0
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 DOI
Tong Feng, Lubiao Liang, Hui Yun Zhou

et al.

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0