Photonics Research
·
2021
·Vol. 9
·期 12
·2369-2380
·
IF 7.08
Yao Tong,Qin Wang,Heng Yang,Xiaoting Liu,Enrou Mei,Xiaojuan Liang,Xiaojuan Liang,Zhijun Zhang,Zhijun Zhang,Weidong Xiang
As an emerging scintillation material, metal halide perovskite (CsPbX3) has been deemed the most potentially valuable candidate in X-ray detection and medical imaging. Nevertheless, it is a continuing challenge to implement efficient radioluminescence (RL) with high radiation stability and moisture resistance. Moreover, the optimized luminescence properties and excellent uniformity of CsPbX3 glass are also key points for obtaining perfect X-ray images. Herein, we have successfully precipitated Eu3+-doped CsPbBr3 nanocrystals (NCs) with improved photoluminescence quantum yield (≈58.6%) because partial Eu3+ entered the perovskite lattice in a robust borosilicate glass matrix by in situ crystallization. The small amount of Eu addition made the lattice of NCs shrink and promoted uniform distribution of CsPbBr3 NCs in the glass, which effectively reduced the light scattering of the sample. Subsequently, multimodal RL intensity of the CsPbBr3/CsPbBr3:xEu NCs glasses (CPB-0Eu/CPB-xEu) as a function of X-ray dose rate showed a superlinear relationship to the benefit of obtaining satisfactory X-ray images. Also, the outstanding radiation stability and water resistance of CPB-xEu were confirmed due to the protection of the robust glass matrix. Finally, an X-ray imaging system using a CPB-xEu scintillator was constructed, and the spring in the opaque sample was legibly detected under the motivation of X-rays, indicating that CsPbX3 glasses possess extensive application prospects in terms of X-ray detection and medical imaging.
研究领域:
材料科学
·
医学影像学
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产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2022
·
IF 4.171
Yumeng Jia,Zhongxiang Shi,Jing Wang,Xiang Li,Zhengkai Zhao
Rare-earth-doped luminescent materials have great application prospects in anti-counterfeit identification. First, LaOF:Er, Eu phosphors with multi-mode luminescence were prepared by a heat treatment precursor using a hydrothermal method . Experimental results show that the emission intensity in green and orange-red light regions can be adjusted by regulating the raw material concentration of Eu 3+ . Upon excitation at 380 and 395 nm, a series of samples was observed to be green and orange-red, respectively, which indicates multi-mode luminescence characteristics. Study on variation of the environment around Eu 3+ ions based on the unique “probe” characteristics of Eu 3+ . Moreover, the prepared powder was applied to develop latent fingerprints on different substrates, which resulted in clearly defined friction ridge details of fingerprints under 395 nm ultraviolet light. Finally, according to these luminescent features, we chose the appropriate phosphors to make a series of luminescent patterns. The typical examples demonstrate that the multi-mode luminescent characteristic of the patterns can be used in anti-counterfeiting.
研究领域:
材料科学
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光学
·
防伪技术
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Yiping Wu,Meng Wu,Jingjie Yu,Yuru Wang,Jinlong Wang,Yingwei Xu,Yanjie Zhang
Optical information encryption based on luminescence materials have received much attention recently. However, the single luminescence mode of the luminescence materials greatly limits its anti-counterfeiting application with high safety level. Here, a series of luminescence materials of Tb 3+ and Bi 3+ co-doped ZnGa 2 O 4 phosphors with great correspondence in photoluminescence (PL), persistent luminescence (PersL), and thermoluminescence (TL) modes was synthesized by the conventional solid-phase method for the application in multi-modal anti-counterfeiting fields. Under the excitation of 254 nm, ZnGa 1.99 O 4 :0.01 Tb 3+ , yBi 3+ (y = 0.001,0.002) sample exhibited a broad blue emission band (the transition from [GaO 6 ]) at 440 nm and the characteristic emission peaks of Tb 3+ at 495 nm, 550 nm, 591 nm and 625 nm, corresponding to the transitions of 5 D 4 - 7 F n (n = 6, 5, 4, 3), respectively. Interestingly, the co-doping of Bi 3+ ions improve the crystallinity and particle size of the phosphor, subsequently enhanced the PL intensity of Tb 3+ to 6 times that of Tb 3+ singly doped ZnGa 2 O 4 phosphor. Further, the flexible films with multi-modal luminescence properties have been fabricated through the unique TL and PersL characteristics of ZnGa 2 O 4 : Tb 3+ , Bi 3+ phosphors, including “Optical information storage film”, “snowflake and characters” and “QR code”. Moreover, a set of optical information encryption is obtained by combining ZnGa 2 O 4 :Tb 3+ , Bi 3+ phosphor and red emitting phosphor. The results indicate that ZnGa 2 O 4 :Tb 3+ , Bi 3+ phosphor with multi-modal stimulus response can be expected to be potentially used in the applications of optical information storage and anti-counterfeiting fields.
研究领域:
材料科学
·
光学工程
·
物理学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Weichen Li,Gaolei Dong,Yan Liu,Bobo Yang,Shiliang Mei,Rongrong Hu,Yuxuan Zhu,Lu Zhang,Rizeng Tao,Ruiqian Guo,Jun Zou
Most anti-counterfeiting devices of luminescent materials are static and single-mode, which limits their security and versatility. A dynamic multimodal luminescent material based on the Br:ZnS glass ceramics was synthesised by high-temperature melting. The effects on the introduction of Br - ions were analysed. The Br:ZnS glass ceramics containing Br - ions exhibits significant fluorescence without the addition of rare-earth or metal ions doping, in contrast to previously reported luminescent materials. Moreover, the colour of the Br:ZnS glass ceramics changes from cyan to green as the temperature increases, indicating that the energy transfer involves the sulfur-vacancy-related emission centre and is influenced by the shifted donor-acceptor energy levels. Based on these findings, we explored the potential applications of the Br:ZnS glass ceramics in anti-counterfeiting and encryption and demonstrated that the dynamic multimodal luminescent characteristics of the material could enable novel and secure pathways for encoding and decoding information.
研究领域:
材料科学
·
光学
·
信息安全
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Yi Zhang,Xihui Shan,Xulong Lv,Dongxun Chen,Shihai Miao,Weili Wang,Yanjie Liang
Discovering multimodal luminescent materials capable of being excited by diverse excitation sources and producing different wavelengths of light emission in a single material system remains a long-standing challenge. Herein, a Pr 3+ single-doped Li 2 CaSiO 4 phosphor is reported as an efficient multimodal luminescence material, which responds to convenient light sources including X-ray tube, 450 nm blue LED/laser, and white LED. Upon X-ray excitation, intense long-lasting red (>24 h) and ultraviolet-C (UVC, >12 h) persistent luminescence can be detected simultaneously, enabling a self-sustained glowing material suitable for working in both dark and bright environments. Significant enhancement of UVC afterglow is observed under the continuous photostimulation of white LED. Moreover, under the excitation of blue light, UVC upconversion luminescence is realized with the aid of unique energy levels of the Pr 3+ emitter. Besides, this material also exhibits exceptional white-to-brown photochromism performance in bright fields only in response to X-ray irradiation, accompanied by excellent bleaching and recovery capability upon thermal or blue light stimulation. The combination of persistent luminescence, photo-stimulated luminescence, upconversion luminescence and photochromism in this integrated multimodal luminescent Li 2 CaSiO 4 :Pr 3+ phosphor provides new and exciting directional solutions for multifunctional applications such as optical information storage and anti-counterfeiting.
研究领域:
材料科学
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光学工程
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信息存储技术
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防伪技术
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Xiang Li,Shuhong Xu,Fan Liu,Junfeng Qu,Haibao Shao,Zhuyuan Wang,Yiping Cui,Dayan Ban,Chunlei Wang
The growing demands for optical anti-counterfeiting technology require the development of new environmentally friendly materials with single component, multimodal fluorescence and high stability. Herein, the Bi/Sb codoped Cs2Ag0.1Na0.9InCl6 lead-free double perovskite material is reported as an efficient multimodal luminescence material with excitation-wavelength-dependent emission. When excited by 360 nm UV light, dual-emission is observed at 455 and 560 nm, which comes from the 3P1–1S0 transition of Sb3+ ions and self-trapped excitons (STEs), respectively. Under the 320 nm UV lamp, the microcrystals show only a blue emission centered at 455 nm. Therefore, the Bi/Sb codoped Cs2Ag0.1Na0.9InCl6 double perovskite emits blue and yellow lights under the 320 and 360 nm UV lamp, respectively. Moreover, the obtained double perovskite shows a high PLQY up to 41% and excellent stability against both air and high temperature, which make it a promising anti-counterfeiting material.
研究领域:
材料科学
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光学工程
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DOI
高影响因子
Advanced Optical Materials
·
2023
·Vol. 11
·期 7
·2202466
·
IF 9
Zhihao Zhou,Fanquan He,Enhai Song,Shuai Zhang,Xiaodong Yi,Hao Zhang,Yakun Le,Shi Ye,Shanhui Xu,Jianrong Qiu,Guoping Dong
Broadband near-infrared (NIR) phosphors have recently received considerable attention in spectroscopy technology fields, but designing inexpensive, emission peaks centered above 800 nm, and multimodal broadband NIR luminescence material still remains a great challenge. Here, by selecting stannate compound Mg 2 SnO 4 (MSO) as the host, a kind of broadband NIR phosphor MSO:Cr 3+ with multimode luminescence properties is reported. The designed material exhibits an emission peaking at 800 nm and a full-width at half maximum of 180 nm (≈2730 cm −1 ). The site occupation of Cr 3+ in MSO is unraveled by density functional theory calculation. The constructed NIR light-emitting device based on MSO:Cr 3+ displays a high NIR output power of 187.19 mW@100 mA and remarkable photoelectric efficiency of 13.67%, and its multifunctional applications in information encryption, non-destructive detection, and so on are also demonstrated. Additionally, through defect site reconstruction, MSO:Cr 3+ presents superior broadband NIR persistent luminescence (PersL) properties with PersL duration time longer than 50 h. This work provides a feasible strategy to develop intelligent optical material integrated with multimodal luminescence through low-cost stannate compounds as the host toward versatile applications such as non-destructive detection and bioimaging.
研究领域:
材料科学
·
光电子学
·
生物成像
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产品关联
DOI
高影响因子
Advanced Optical Materials
·
2025
·
IF 7.2
Wenna Gao,Liangshen Wang,Yuqiang Wang,Wenqian Xu,Xiangyu Zhang,Dangli Gao
Precise manipulation of luminescence modality and chromatic output in persistent luminescence (PersL) materials is critical for information storage and advanced anti-counterfeiting. Here, a multimodal GdNbO 4 :Bi 3+ ,Tb 3+ phosphor with the quintuplet luminescence (including photoluminescence, PersL, photo-stimulated luminescence (PSL), photo-stimulated PersL, and thermo-stimulated luminescence (TSL)) and spatiotemporally tunable colorimetry is reported. The PersL mechanism follows the localized model is proposed based on monitored wavelength and temperature-dependent thermoluminescence curves. While the dynamic PersL output color can be attributed to energy transfer and different luminescent decay rates. For the first time, the mechanisms of PSL and TSL are clarified, which are attributed to the release of trapped carriers corresponding to optical and acoustic transitions, respectively. These multimodal phosphors are used for information storage and sophisticated anti-counterfeiting. This study here offers profound insights into the mechanism of multimodal luminescence, providing theoretical guidance and practical examples for the design, synthesis, and application of PersL materials.
研究领域:
材料科学
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光电子学
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信息存储
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固体物理
·
化学
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
·
IF 5.316
Kun He,Libin Zhang,Yuan Liu,Beibei Xu,Liang Chen,Gongxun Bai
The non-contact thermometry based on fluorescence intensity ratio of phosphors has been extensively investigated owing to its high sensitivity and fast response. However, most of them only use a single mode of upconversion or downconversion emission for temperature sensing and ignore the affection of the humidity. In this work, the Yb/Er ions doped La 2 Mo 3 O 12 microcrystals with nonhygroscopic property and multimode luminescence have been developed for temperature sensing. The optical thermometer could be based on not only luminescent intensity ratio of upconversion and downconversion, but also average fluorescence decay lifetime. The maximal absolute sensitivity can reach up to 6.2% K −1 and the maximal relative sensitivity is 1.63% K −1 . Moreover, the fluorescence emission intensity of the doped La 2 Mo 3 O 12 microcrystals will not be affected by the humidity compared to some doped molybdate and tungstate . These excellent performances suggest that the La 2 Mo 3 O 12 :Yb/Er microcrystals possess great potential for practical applications in temperature sensing.
研究领域:
材料科学
·
光学工程
·
无机化学
·
传感器技术
·
生物医学工程
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Xiangyan Yun,Yujie Xie,Yukang Lu,Hanlin Hu,Yumeng Shi,Henan Li
The synergistic interaction between Mn2+ and Sb3+ ions in organic–inorganic hybrid single crystals has unlocked exciting optical applications for multiple band emission centers. Here, (TPMP)2MnBr4:Sb3+ single crystals were synthesized. They exhibited energy transfer from Mn2+ to Sb3+ ions, producing color-tunable luminescence and multiband emission. The dual emission leveraged d-d transitions in Mn2+ for green emission and self-trapped excitons in Sb3+ for broad red emission. Precise control of the excitation energy created broad color gamut modulation on the CIE chromaticity diagram, ranging across green, yellow, and red. Furthermore, there were distinct temperature sensitivities of the Mn2+ and Sb3+ emission centers, leading to robust fluorescence intensity ratios for temperature sensing with high relative sensitivity (3.92% K–1) and absolute sensitivity (5.42% K–1). These results indicated significant (TPMP)2MnBr4:Sb3+ potential for optical temperature sensing and dynamic information for anticounterfeiting encryption. This work provides a pathway for energy-transfer dynamics and luminescence applications of Mn2+-Sb3+ systems.
研究领域:
材料化学
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光物理学
·
功能材料
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分析化学
·
传感器技术
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2025
·
IF 3.4
Biao Xu,Wanyuan Li,Chengyu Ni,Wubin Dai
Unlike static anticounterfeiting that is easily replicated, dynamic multimode photoluminescence (PL) technology has a brighter application prospect in anticounterfeiting/encryption. Yet, the majority of dynamic PL phosphors currently still rely solely on the optical storage mechanism, resulting in a scarcity of diversification, and can easily be decoded. Herein, a series of SrGa2Si2O8: Mn2+/Cr3+ (SGS: Mn/Cr), synthesized via a facile solid-state reaction, is designed to explore interrelationships among entangled changes in the host structure, crystallographic site occupancy, dynamic multimode PL, and multiapplications in anticounterfeiting, encryption, and optical thermometry, based on theoretical calculations and experimental analyses. Although pristine SGS only provides 7(Sr)- and 4(Ga, Si)-fold sites for dopants to occupy, highly efficient characteristic broadband red-NIR emission at ∼765 nm from Cr3+ in 6-fold crystallographic position is obtained as a result of fine-tuning of the local site from [GaO4] to [Ga(Cr)O6] and the close ionic radius in the same valence. Based on the spectral superposition of Mn2+ simultaneously from [Ga(Mn)O4], [Sr(Mn)O7], and Mn–Mn dimers, broadband PL in the green region with a summit of ∼530 nm is gained. The green- and red-NIR afterglows from Mn2+ and Cr3+ with wide and continuous multiple traps are also studied. Owing to the combined PL from the codoped SGS: Mn/Cr, which shows strong correlations with excitation wavelength, doping content, composition, temperature, and detecting time, dynamic multimode PL is realized under distinct test conditions, and the corresponding applications are achieved in the laboratory. This study gives new cogitations in structural adaptabilities for Cr-activated phosphors and their related actual applications.
研究领域:
材料科学
·
光学功能材料
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固态化学
·
发光物理
·
防伪技术
·
传感技术
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无机非金属材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Tongxuan Mi,Yuhong Zhang,Luo Su,Jingyi Zhang,Jingliang Zhang,AoTian Zhang,Hang Liu
In this paper, a series of Sm 3+ single-doped and Sm 3+ /Er 3+ co-doped lead-free double perovskite cesium sodium bismuthate hexachloride(Cs 2 NaBiCl 6 ) fluorescent materials are successfully synthesized by solvothermal method, and their multimode luminescence properties and temperature sensing properties are systematically studied. The yellow, orange and green tunable luminescence of Cs 2 NaBiCl 6 :Sm 3+ /Er 3+ phosphor are achieved by adjusting the excitation wavelength(380, 410, 980 nm). The material exhibits multi-color luminescence characteristics under different excitation. Moreover, the anti-counterfeit design exhibits robust security and resistance to duplication. Based on the luminescence intensity ratio(LIR) technology, the relative sensitivity(S R ) of Cs 2 NaBiCl 6 :15 %Sm 3+ /20 %Er 3+ reaches 3.06 %K −1 (313 K) under 410 nm excitation. The study provides a new idea for the development of multi-functional lead-free perovskite materials in the field of optical anti-counterfeiting and precision temperature measurement.
研究领域:
材料科学
·
光学安全
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温度传感
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固体物理
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无机化学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）