Multi-channel lifetime thermometry and security films based on Ln (Ln = Sm3+, Tb3+, and Sm3+/Tb3+) doped NaKLaNbO5 phosphors DOI

Weiwei Xiang,

Jae Su Yu

Optics & Laser Technology, Journal Year: 2024, Volume and Issue: 180, P. 111450 - 111450

Published: July 16, 2024

Language: Английский

Dy3+,Mn4+ co-doped phosphors for synergistic luminescent dual-mode thermometer and high-resolution imaging DOI Creative Commons

Kangrui Qiang,

Yulong Ye, Qinan Mao

et al.

Materials & Design, Journal Year: 2024, Volume and Issue: 241, P. 112906 - 112906

Published: April 1, 2024

Fluorescent temperature measurement has become a research hotspot due to its characteristics of non-contact, miniaturization, and fast response. However, it remains key challenge realize excellent sensitivity high resolution. Herein, series La2MgTiO6:Dy3+,Mn4+ phosphors are developed the related energy transfer between Dy3+→Mn4+ is discovered. The coupling distance Mn4+ adjacent ligands greatly affected by temperature. differences emission levels lower Dy3+ hinder multi-phonon relaxation process, which moderates thermal quenching rate Dy3+. Therefore, highly sensitive FIR thermometers built according significant discrimination dependence Mn4+. maximum Sa Sr reach 0.022 K−1(@563 K) 2.622 %K−1(@544 K). In contrast, thermometer based on lifetime fabricated, extremely Interestingly, can effectively promote Mn4+, then improve sensitivity. enhanced from 1.621 %K−1(@503 2.305 %K−1 (@480 resolution dual-mode fluorescence thermometry have exceeded most current optical materials. Besides, thermochromic properties presented designed be combined with PDMS films qualitatively evaluate ambient

Language: Английский

Citations

18
Highly efficient Dy3+ activated Sr9Al6O18 nanophosphors for W-LEDs, optical thermometry and deep learning-based intelligent system for personal identification applications DOI

N. Navya,

B.R. Radha Krushna,

S.C. Sharma

et al.

Inorganic Chemistry Communications, Journal Year: 2024, Volume and Issue: 169, P. 113138 - 113138

Published: Sept. 10, 2024

Language: Английский

Citations

16
Bi3+/Eu3+ Co‐Activated Multimode Anti‐Counterfeiting Material with White Light Emission and Orange‐Yellow Persistent Luminescence DOI

Xuexia Chen,

Ran Pang, Shangwei Wang

et al.

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: 18(11)

Published: July 5, 2024

Abstract Traditional anti‐counterfeiting luminescent phosphors are usually composed of single‐mode photoluminescence materials, which greatly limits the security encryption by its static fluorescent pattern. Herein, multi‐mode luminescence properties achieved including fluorescence and persistent (PersL) within single host co‐doping Bi 3+ Eu in CaNaSb 2 O 6 F (CNSOF). A tunable emission is observed from blue (Bi , 3 P 1 → S 0 ) to white then orange‐yellow (Eu 5 D 7 0, 1, 2, 3, 4 as excitation schemes, environment temperatures doping level modulated. Impressively, attributed rapidly disappears after stopping light irradiation, only intense PersL produced can be observed. And a possible model for energy transfer mechanism proposed investigation crystal structure photoluminescence/PersL. schematic logo digital information demonstrated using prepared samples, shows dynamic evolution color brightness. The excellent property multiple outputs, different decay processes, external field stimulation modes (including low light, thermal, mechanical stimuli) present CNSOF:Bi provides fast, low‐cost, effective method advanced applications.

Language: Английский

Citations

9
Theoretically Guided Development of Excitation-Wavelength-Dependent Multifunctional Phosphor Based on Gallium Vacancy Perturbation DOI
Mengmeng Jiao,

Zhifei He,

Jingyu Chen

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 14, 2025

Constructing multifunctional phosphors grounded in the intricate relationship between energy level structures and luminescent properties has captivated researchers material field. Herein, using embedded cluster multiconfigurational ab initio method, levels of Bi3+ SrLaGa3O7 host at different geometries were calculated, which results establishment complete configurational coordinate curves, yielding breathing mode vibrational frequencies equilibrium bond lengths for all excited states. These curves supply deep insight into luminescence Bi3+-doped highlight impact ions second coordination sphere on luminescence. Inspired by calculated results, we designed SrLaGa3(1–x)O7−δ:0.01 with Ga3+ reductions. The artificially introduced gallium vacancy perturbed luminescence, as verified systematic experimental analysis, causes to exhibit a novel greenish-yellow emission band addition original blue band, leading excitation-wavelength-dependent multicolor phosphors. obtained phosphor displayed fluorescent anticounterfeiting function, switching system was merits direct visualization easy identification encrypted information. Additionally, white light-emitting diodes fabricated employing prepared UV chips. indicate that SrLaGa3(1-x)O7-δ:0.01 significant potential both lighting applications. Our study demonstrates necessity considering two spheres ligands when interpreting illustrates effectiveness spectral design under theoretical guidance, providing feasible path development

Language: Английский

Citations

1
Luminescence Properties and Mechanisms of Ca10(PO4)6F2:Er3+ as a Green Phosphor for White LEDs DOI

Shao-rong Bie,

Dingshun She, Wen Yue

et al.

Journal of Solid State Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 125281 - 125281

Published: Feb. 1, 2025

Language: Английский

Citations

1
Eu3+ doping induces asynchronous tuning of luminescence and afterglow in self-activated LiZnSbO4 host for multiple applications DOI
Liang Liang,

Heyi Yang,

Qinan Mao

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161129 - 161129

Published: Feb. 1, 2025

Language: Английский

Citations

1
A highly sensitive multiple-mode optical thermometer designed in Eu 2+/3+ and Li + co-doped polymorphism compound LaSc 3(BO 3) 4 DOI Creative Commons
Nan Yang, Zhuo Li, Tingxia Zhou

et al.

Journal of Advanced Ceramics, Journal Year: 2024, Volume and Issue: 13(6), P. 821 - 833

Published: April 24, 2024

Language: Английский

Citations

7
Optical, thermal, and structural properties of Er3+ incorporated double perovskite Ca2MgWO6 phosphors DOI Creative Commons

R Kiran,

A. Princy,

S. Masilla Moses Kennedy

et al.

Journal of Luminescence, Journal Year: 2024, Volume and Issue: 276, P. 120853 - 120853

Published: Aug. 17, 2024

Language: Английский

Citations

7
Unusual Tm3+ sensitization-induced white-emitting and thermostable improvement in Ba2Y2Ge4O13:Dy3+ phosphor for solid-state lighting and optical thermometry DOI
Huan Tang,

Xiaoyang Zhao,

Qin Yue

et al.

Progress in Solid State Chemistry, Journal Year: 2024, Volume and Issue: 75, P. 100477 - 100477

Published: Aug. 30, 2024

Language: Английский

Citations

5
Structural and photoluminescence properties of SrNb2O6: RE3+ (RE = Sm, Tb) phosphors for solid state lighting DOI

Dixi Ke,

Gen Li, Min Zeng

et al.

Ceramics International, Journal Year: 2024, Volume and Issue: 50(20), P. 39175 - 39185

Published: July 20, 2024

Language: Английский

Citations

4