Regulating Luminescence Thermal Quenching of Praseodymium-Doped Niobo-Tantalate Phosphor through Intervalence Charge Transfer Band Displacement DOI
Xiang Lv, Ning Guo, Wenzhen Lv

et al.

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(38), P. 15747 - 15756

Published: Sept. 11, 2023

Pr3+-related intervalence charge transfer (IVCT) bands are a research hotspot owing to their amelioration in the luminescence thermal quenching of Pr3+-activated phosphors. Here, typical IVCT band displacement strategy via topological chemical scheme is reported optimize performance praseodymium-doped niobo-tantalate. The substitution Ta5+ ions for Nb5+ reduces valence-weighted average cation optical electronegativity and increases bond lengths activator (Pr3+) ligand cations (Nb5+ Ta5+) adjusting crystal structure, leading an increase energy level position from 3.521 4.139 eV. leads number electrons located Pr3+ 3P0 level, which compensates emission 1D2 during warming. Especially, gap value positively correlated with activation ΔE2. ΔE2 increases, crossover point rises, nonradiative transition decreases, further enhancing emission. At 503 K, integral intensity 14 224% relative 303 K original intensity. This can be used as designing antithermal materials.

Language: Английский

Recent advances in the anti-counterfeiting applications of long persistent phosphors DOI

Qingqing Kuang,

Xiaochun Hou,

Chengxue Du

et al.

Physical Chemistry Chemical Physics, Journal Year: 2023, Volume and Issue: 25(27), P. 17759 - 17768

Published: Jan. 1, 2023

To prevent counterfeiting, various luminescent anti-counterfeiting strategies, including multicolor, orthogonal, dynamic, and stimulus-response luminescence, are employed using long persistent phosphors.using phosphors.

Language: Английский

Citations

60
Charge carrier trapping management in Bi3+ and lanthanides doped Li(Sc,Lu)GeO4 for x-ray imaging, anti-counterfeiting, and force recording DOI Open Access
Tianshuai Lyu, Pieter Dorenbos

Applied Physics Reviews, Journal Year: 2024, Volume and Issue: 11(1)

Published: Feb. 21, 2024

Discovering energy storage materials with rationally controlled trapping and de-trapping of electrons holes upon x-rays, UV-light, or mechanical force stimulation is challenging. Such enable promising applications in various fields, for instance multimode anti-counterfeiting, x-ray imaging, non-real-time recording. In this work, photoluminescence spectroscopy, the refined chemical shift model, thermoluminescence studies will be combined to establish vacuum referred binding (VRBE) diagrams LiSc1−xLuxGeO4 family compounds containing level locations Bi2+, Bi3+, lanthanides. The established VRBE are used develop Bi3+ lanthanides doped phosphors understand processes charge carriers physical excitation means. intensity irradiated LiSc0.25Lu0.75GeO4:0.001Bi3+,0.001Eu3+ about two times higher than that state-of-the-art phosphor BaFBr(I):Eu2+. Particularly, a induced carrier phenomenon appears Eu3+ co-doped LiSc1−xLuxGeO4. Proof-of-concept recording, imaging demonstrated. This work not only deepens our understanding capturing sources, but can also trigger scientists discover new by exploiting VRBEs bismuth lanthanide levels.

Language: Английский

Citations

22
Rare Earth Ion Doped Luminescent Materials: A Review of Up/Down Conversion Luminescent Mechanism, Synthesis, and Anti-Counterfeiting Application DOI Creative Commons
Ziyu Chen,

Hang Zhu,

Jiajie Qian

et al.

Photonics, Journal Year: 2023, Volume and Issue: 10(9), P. 1014 - 1014

Published: Sept. 5, 2023

With the rapid development of modern technology and information systems, optical anti-counterfeiting encryption have recently attracted considerable attention. The demand for materials is also constantly increasing, with new requirements proposed performance application fields. Currently, rare earth ion doped possess a unique electronic layer structure, underfilled 4f5d configuration, rich energy level, long-life excited state, which can produce variety radiation absorption emission. distinctive properties are beneficial using in diverse output anti-counterfeiting. Design essential multiple responsiveness multi-channel field security. Therefore, this mini review summarizes luminescent mechanisms, preparation methods, characteristics materials. In addition, we discuss some critical challenges field, potential solutions that been or being developed to overcome these challenges.

Language: Английский

Citations

29
Stimulated-source-independent persistent luminescence phosphor Sr2Ta2O7:Tb3+, Tm3+ for multi-mode anti-counterfeiting applications DOI

Zexun Li,

Jinmeng Xiang,

Changheng Chen

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(16), P. 5727 - 5736

Published: Jan. 1, 2024

The multi-mode luminescent anti-counterfeiting materials Sr 2 Ta O 7 :Tb 3+ , Tm were prepared, which possessed DC, UC, PSL, and PersL modes.

Language: Английский

Citations

15
Shape-on-demand synthesis of luminescent (ETP)2MnBr4 glass scintillator DOI
Xiaojia Wang,

Xiangzhou Zhang,

Yeqi Liu

et al.

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 483, P. 149239 - 149239

Published: Feb. 2, 2024

Language: Английский

Citations

13
Indirect evidence of Bi3+ valence change and dual role of Bi3+ in trapping electrons and holes for multimode X-ray imaging, anti-counterfeiting, and non-real-time force sensing DOI
Tianshuai Lyu, P. Dorenbos, Zhanhua Wei

et al.

Acta Materialia, Journal Year: 2024, Volume and Issue: 273, P. 119953 - 119953

Published: April 22, 2024

Language: Английский

Citations

12
Interrupting the long-range energy migration among Eu3+ by the introduction of unequivalent [NaO8] units to achieve both high quenching concentration and quantum yield in NaY2Ga2InGe2O12 DOI
Jiajun Feng, Lianfen Chen, Jingtian Xie

et al.

Materials Today Chemistry, Journal Year: 2024, Volume and Issue: 36, P. 101979 - 101979

Published: Feb. 24, 2024

Language: Английский

Citations

11
Liquid nitrogen temperature to 700 K Bi3+ thermoluminescence: Toward wide-temperature-range light dosimeters for versatile anti-counterfeiting, information storage, and x-ray imaging DOI
Tianshuai Lyu, Pieter Dorenbos

Applied Physics Reviews, Journal Year: 2024, Volume and Issue: 11(4)

Published: Oct. 31, 2024

Discovering light dosimeters that can function effectively from liquid nitrogen temperature to 700 K presents significant challenges. Such facilitate a range of cutting-edge applications, including anti-counterfeiting measures at low for cryo-preservation. To such discovery, stacked vacuum referred binding energy diagrams the LiYGeO4 cluster crystals have been first constructed. They offer robust method controlling both electron and hole trapping depth in crystals. Wide shifting Bi2+ Eu2+ thermoluminescence (TL) glow bands emerges 200 500 LiYxLu1-xGeO4:0.01Bi3+ LiYxLu1-xGeO4:0.01Bi3+, 0.001Eu3+, by changing x, facilitating conduction band tailoring. Bi4+ TL 300 LiYGezSi1-zO4:0.01Bi3+, tuning z, valence peaks near 135, 185, 232, 311 emerge LiyNa1-yYGeO4: 0.001Bi3+. Particularly, discovered Bi3+ or/and lanthanide modified exhibit superior charge carrier storage capacity minimal fading properties. For instance, ratio intensity optimized LiYGe0.75Si0.25O4:0.001Bi3+ industrial BaFBr(I):Eu2+ is as high ∼4. Interestingly, imaging intense optically driven ultraviolet-A (UVA) luminescence has validated 254 nm energized LiY0.25Lu0.75GeO4:0.01Bi3+ with 100 lux white LED illumination. Together ZnS:Mn2+, LiTaO3:Bi3+, Sm3+, Cs2ZrCl6:Sb3+ perovskites, realization wide offers promising use versatile anti-counterfeiting, information storage, delayed x-ray purposes.

Language: Английский

Citations

10
Realization of Antithermal Quenching of Eu3+ for High‐Sensitivity Luminescence Thermometry via an Indirect Energy Transfer Route DOI Open Access
Hongji Song, Zhan‐Chao Wu, Yibo Chen

et al.

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 20, 2025

Abstract Luminescence intensity decreasing with rising temperature is a common phenomenon called thermal quenching. However, the Bi 3+ ‐Eu co‐doped NaGd 2 Ga 3 Ge O 12 (NGGG) phosphor exhibits antithermal quenching luminescence of Eu . has pair thermally coupled energy levels (TCLs), where higher level P 1 and lower derived from metal‐to‐metal charge‐transfer (MMCT). As concentration increases, lifetime decreases, while MMCT remains unchanged. It means that transfer (ET) only happens between Interestingly, excited, emission still observed. This because when exciting level, as upper TCLs, can also be which consequently leads to Accordingly, ⁺ will increased show coupling process enhanced temperature. Taking advantage unique ET ⁺, ⁺‐Eu NGGG demonstrates sensitivity 2.08% K − ¹ at 500 K, distinct most fluorescence thermometers maximum low temperatures.

Language: Английский

Citations

1
Opto‐Mechano‐Thermo‐Sensitive Allochroic Luminescence Based on Solution‐Grown Halide Double Perovskite Crystal DOI Open Access
Peng Zhang, Wanying Xie,

Zenggang Lin

et al.

Laser & Photonics Review, Journal Year: 2023, Volume and Issue: 17(12)

Published: Oct. 12, 2023

Abstract Multimode luminescence generally exhibits tunable photon emission through multidimensional stimuli, demonstrating high‐throughput and facile identification for anticounterfeiting encryption. Nevertheless, producing multimodal luminescent materials low‐temperature treatment remains a challenge. Herein, the Mn 2+ /Er 3+ co‐doped Cs 2 Ag 0.8 Na 0.2 InCl 6 perovskite material (reaction temperature of 180 °C) achieves long‐persistent luminescence, multicolor upconversion by responding to several types excitations ranging from UV NIR mechanical force. The adjustable energy transfer process between self‐trapped excitons (STE) ions with temperatures 97 397 K. Theoretical calculation reveals that important role dopants + in modulation local electronic environments afterglow comes carriers escaping trap center (primarily caused Cl vacancy interstitial Na) (Mn ions). This integrated provides novel direction development multifunctional optical devices.

Language: Английский

Citations

17