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

Mingkai Wei,

Yi Liang, Jian Zeng

и другие.

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

Controllable thermo-stimulated luminescence in niobate persistent phosphor by constructing the photovoltaic/electrolytic cell for remote intelligent anti-counterfeiting DOI
Yuanyuan Hu, Dangli Gao, Xiangyu Zhang

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161181 - 161181

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

4
Simultaneous adjustment of afterglow wavelength and intensity in indium-substituted Ga1.99−xInxO3:0.01Cr3+ DOI
Qingqing Xie,

Ailijiang Tuerdi,

Xiangkai Qiao

и другие.

Journal of Materials Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Replacing gallium with indium in the crystal structure of Ga 2 O 3 :Cr 3+ redshifts emission wavelength to 830 nm and induces persistent luminescence.

Язык: Английский

Процитировано

0
Defect‐Assisted Dual‐Channel Optical Storage Material with Photochromism and Concealed Persistent Luminescence DOI Open Access
Haijie Guo, Lili Liu, Lei Wang

и другие.

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

Опубликована: Март 19, 2025

Abstract Optical information storage technology offers several advantages, including cost‐effectiveness, multidimensional storage, and rewritable capability. Consequently, it has become increasingly popular for optical media. Herein, a novel material Na 2 CaGe O 6 :Bi 3+ (NCGO:Bi ) is developed using non‐equivalent substitution strategy, which exhibits photochromic (PC) ultraviolet persistent luminescence (UV PersL) properties. NCGO:Bi demonstrates excellent white‐to‐brown PC performance under 254 nm light irradiation. The brown phosphor can be effectively bleached 425 or thermal stimulation, demonstrating reversibility over multiple cycles. Additionally, the displays UV PersL characteristics. representative sample NCGO:0.001Bi with duration time exceeding 10 h after excitation, peaking at 358 nm. Simultaneously, due to electrons captured by deep traps released via low‐energy also photostimulated Specifically, oxygen vacancies (V are identified primarily responsible observed phenomena X‐ray photoelectron spectroscopy (XPS) electron paramagnetic resonance (EPR) analyses. Overall, this work indicates that combination of light‐induced in single potential designing advanced luminescent materials application storage.

Язык: Английский

Процитировано

0
Multicolor Persistent Luminescence for High-Sensitivity Optical Temperature Sensing, Human Motion Detection, and Multimodal Anticounterfeiting Materials DOI
Lingbo Zhou, Rujia Chen, Xinying Li

и другие.

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

Опубликована: Апрель 16, 2025

Multimodal luminescent materials are widely used in noncontact temperature sensors and fluorescent dynamic anticounterfeiting due to their visible persistent luminescence fast optical signal response. To this end, CaY0.99GaO4: 0.01 Bi3+; CaY0.92GaO4: Bi3+, 0.07Eu3+; CaY0.96GaO4: 0.03Er3+ phosphors were prepared using the high-temperature solid-state method. The down-conversion luminescence, up-conversion long mechanical of studied, achieving multicolor luminescence. It was found that 0.07Eu3+ phosphor achieves maximum relative sensitivity 1.49% K-1. These show great potential for applications detection. Through density functional theory electron localization function analysis, multimodal CaYGaO4: Eu3+/Er3+ studied. ion doping leads a decrease band gap induces Jahn-Teller effect, creating lower energy channels accelerate carrier release enhance performance. This is fundamental reason realization human motion Subsequently, novel sensing device detection developed high performance phosphor. properties demonstrated static-dynamic applications. Finally, it stability wide defect states provide new approach sensors, detection, information storage, anticounterfeiting.

Язык: Английский

Процитировано

0
Li+-induced Dual Emission LiGa5O8 for High Sensitivity Optical Thermometer and Multi-mode Dynamic Anti-counterfeiting DOI
Jie Zhang,

Chengxue Deng,

J. He

и другие.

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Май 1, 2025

Язык: Английский

Процитировано

0
Microneedle-aided nanotherapeutics delivery and nanosensor intervention in advanced tissue regeneration DOI Creative Commons

Churong Xu,

Fei Wu,

Zhouyi Duan

и другие.

Journal of Nanobiotechnology, Год журнала: 2025, Номер 23(1)

Опубликована: Май 3, 2025

Язык: Английский

Процитировано

0
Structural Rigidity Control via Non-Primary Lattice Substitution toward Thermally Stable Cr3+-Doped Near-Infrared Phosphors for pc-LED Applications DOI

Mingkai Wei,

Yi Liang, Jian Zeng

и другие.

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

Процитировано

0