Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 42
·15112-15120
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IF 7.393
Wei Tang,Chuandong Zuo,Yingkui Li,Chaoyang Ma,Xuanyi Yuan,Zicheng Wen,Yongge Cao
Owing to the impact of robust thermal quenching, lanthanide-based luminescence thermometer operation can usually only be achieved within a comparatively small temperature scope (ambient temperature to 800 K). Here, this study presents a method for addressing the mentioned limits, and a luminescence thermometer with an ultra-wide temperature range has been achieved, which adopted Pr3+-doped Ba(Zr0.16Mg0.28Ta0.56)O3 transparent ceramic to be the optical temperature probe. Based on the high luminescence intensity and excellent thermal stability of the 3P0–3F2 hypersensitive transition of Pr3+ in Ba(Zr0.16Mg0.28Ta0.56)O3 transparent ceramic, the intensity ratio of the emissions at 624 nm and 649 nm was employed for temperature sensing in an ultra-wide range (293–873 K), and the maximal relative sensitivity reached 1.05% K−1, outperforming most existing luminescence temperature measurement transparent ceramics. Furthermore, in Pr3+-doped Ba(Zr0.16Mg0.28Ta0.56)O3 transparent ceramic, the lifetime of the 3P0–3H4 transition also exhibits prominent optical thermometry performance (303–873 K). The results presented in this work may be of high significance for the design of novel ratiometric/lifetime dual-mode optical temperature sensors in the high-temperature measurement field.
研究领域:
材料科学
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光学工程
·
温度测量技术
✓ 已验证
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2025
·
IF 7.2
Xiaoxuan Fan,Yonggui Zheng,Ran Tao,Lirong Xu,Shanshan Jiang,Hainan Li,Tianya Tan,Shuo Cao,Xuemei Lu,Kexin Wang,Jiwei Wang
Long-afterglow photocatalytic technology offers promising potential for all-weather pollutant treatment, yet its efficiency is often constrained by competition between afterglow emission and photocatalytic reactions. To address this, we developed a Pr 3+ -doped Ca 2 Al 2 SiO 7 (CASO) photocatalyst enriched with oxygen vacancies (V O ). The introduction of oxygen vacancies significantly increases trap concentration, enhancing both the intensity and duration of the afterglow emission. A persulfate-assisted photo-Fenton system was designed based on V O -CASO: Pr 3+ enabling the self-activated degradation of tetracycline hydrochloride (TC) under ultraviolet afterglow. The photo-Fenton reaction consumes excess holes accumulated during the afterglow process, improving carrier utilization efficiency and mitigating rapid recombination. Additionally, persulfate addition can enrich reactive species and facilitate the Fe 2+ /Fe 3+ cycle. Benefiting from these synergistic effects, V O -CASO: Pr 3+ has achieved 75% TC degradation within 1 h, significantly outperforming traditional systems. This study provides a new strategy for enhancing long-afterglow photocatalytic performance, paving the way for sustainable pollutant degradation technologies.
研究领域:
环境科学
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材料科学
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光催化技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2016
·
IF 9.407
Jun-Cheng Zhang,Yun-Ze Long,Xu Yan,Xusheng Wang,Feng Wang
Recoverable mechanoluminescence (ML), characterized by nondestructive and repetitive luminescence in response to a mechanical stress, has shown considerable promise in a variety of practical applications including lighting and display, as well as stress sensing and imaging. However, the progress in utilizing ML processes has been constrained by the difficulties in developing new ML materials and in ascertaining ML mechanism. In this paper, we report a new strategy to constructing recoverable ML materials by doping piezoelectric hosts with luminescent lanthanide ions, which simultaneously create luminescent centers and carrier traps in the host lattice. The viability of the strategy has been confirmed by assessing a series of Pr3+ activated calcium niobates composed of mCaO·Nb2O5 (m = 1, 2, and 3). Furthermore, systematical characterizations of the series of calcium niobates also reveal an unusual host dependent ML phenomenon. Our results are expected to expand the scope of designing ML materials and to deepen our understanding of ML mechanism, thereby promoting further utilization of recoverable ML.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
Materials Advances
·
2022
·Vol. 3
·期 7
·3267-3277
·
IF 0
Yan Cui,Yan Gao,Zhichao Meng,Tao Hu,Yeqing Chen,Yan Chen,Qingguang Zeng
Optical thermometry offers promising applications in the fields of microelectronics and biomedicine, as well as in fire pre-warning systems. In this research, Pr3+-activated SrZn0.33Nb0.67O3 phosphors were successfully prepared via solid-state reactions. Under ultraviolet excitation, the SrZn0.33Nb0.67O3:x%Pr3+ (x = 0.25/0.75/1.25/2) phosphors exhibit bright blue and red emissions, located at 491 nm (3P0 → 3H4), 619 nm (1D2 → 3H4) and 651 nm (3P0 → 3F2). Specifically, two fluorescence intensity ratio (FIR) models of 1D2 → 3H4versus3P0 → 3H4 (Red1/Blue) and 1D2 → 3H4versus3P0 → 3F2 (Red1/Red2) in the temperature range of 300–500 K are adopted for temperature sensing. Our results show that the designed phosphor can serve as a novel potential self-calibrated optical thermometer. Moreover, the temperature sensitivity of the FIR thermometer is significantly enhanced when Ga3+ is incorporated into the SrZn0.33Nb0.67O3. Specifically, the maximum absolute and relative sensitivity for the 6% Ga3+ co-doped sample are increased five- and two-fold, respectively, compared with the undoped sample. This work may provide useful inspiration for effectively improving the temperature-sensing performance of optical thermometers.
研究领域:
材料科学
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光学工程
·
生物医学工程
✓ 已验证
产品关联
DOI
Journal of Materials Chemistry C
·
2021
·Vol. 9
·期 41
·14730-14739
·
IF 7.393
Shao Yan,Yanjie Liang,Jingwei Liu,Dongxun Chen,Shihai Miao,Jianqiang Bi,Kangning Sun
Inorganic luminescent materials that emit in the ultraviolet-B (UVB) region (280–320 nm) have gained considerable attention in recent years because of the growing demands for applications in photochemistry and photomedicine. However, most of the available UVB phosphors are photoluminescent, for which continuous external excitation is essential. This common but very inconvenient luminescence form hinders the further development of UVB luminescence technology. Here, we report the design and development of a series of Pr3+-doped garnet-based UVB persistent phosphors by combining conduction band engineering, the vacuum referred binding energy (VRBE) diagram and persistent energy transfer control. The developed UVB persistent phosphors can not only be charged using a standard 254 nm UV lamp but also natural sunlight, leading to an intense and long-lasting UVB afterglow of more than 60 h. Besides, the persistent luminescence properties and trap charging and detrapping processes are comprehensively investigated using persistent luminescence excitation spectra and thermoluminescence experiments to uncover the possible luminescence mechanism in these phosphors. More importantly, the unique UVB persistent light emission from these garnet phosphors can be clearly imaged and recorded using a UVB camera in a bright indoor-lighting environment because of the zero-background noise from indoor ambient light, indicating that these UVB persistent phosphors have important application potential for optical tagging and optical data storage in a bright environment.
研究领域:
无机材料科学
·
光物理学
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生物医学工程
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2017
·Vol. 19
·期 36
·24513-24521
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IF 4.123
Zheng Gong,Yuxue Liu,Jian Yang,Duanting Yan,Hancheng Zhu,Chunguang Liu,Changshan Xu,Hong Zhang
Spinel-phase Zn2Ga2.98−xGe0.75O8:Cr0.020,Prx (ZGGO:Cr3+,Pr3+) near infrared (NIR) persistent luminescence nanoparticles (PLNPs) with different amounts of Pr3+ dopant were prepared by a hydrothermal method in combination with a subsequent annealing in a vacuum. For these nanoparticles, the averaged particle size decreases from 64 to 37 nm with increasing Pr3+ doping concentration from 0 to 0.025 and Cr3+ and Pr3+ ions are uniformly doped into the interior and surface of a single nanoparticle. It can be found that Pr3+ doping leads to the appearance of more anti-site pairs () around distorted octahedral Cr3+ ions and enhanced NIR emissions around 697 nm, which originate from the 2E(2G) → 4A2(4F) and 4T2(4F) → 4A2(4F) transitions of the interior and surface Cr3+ ions in the nanoparticles. In particular, for the interior Cr3+ ions in the Pr3+ doped nanoparticles, the enhanced NIR luminescence can be attributed to the suppressed energy transfer of the excited electrons from the 4T2(4F) level to the trap level related to anti-site pairs () around the distorted octahedral Cr3+ ions. Our results suggest that Pr3+ doped ZGGO:Cr3+ PLNPs have potential applications for bio-imaging.
研究领域:
材料科学
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生物医学工程
·
光学
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2019
·
IF 4.029
Xudong Qi,Yan Zhao,Enwei Sun,Juan Du,Kai Li,Ye Sun,Bin Yang,Rui Zhang,Wenwu Cao
The photoluminescence , dielectric relaxation, ferroelectric hysteresis, and field-induced strain properties of Pr 3+ -doped 0.24Pb(In 1/2 Nb 1/2 )O 3 -0.42Pb(Mg 1/3 Nb 2/3 )O 3 -0.34PbTiO 3 (PIN-PMN-PT:Pr 3+ ) multifunctional ceramics have been investigated. It was found that Pr 3+ doping enhanced the dielectric diffuseness and relaxation behavior of PIN-PMN-PT ceramics. Slim P - E loops and S - E curves appear in PIN-PMN-PT:Pr 3+ ceramics when the Pr 3+ doping concentration reaches 1.4 mol%. Local domain configurations associated with phase transitions were investigated by piezoresponse force microscopy (PFM). Large electrostrictive coefficient Q 33 (˜0.03 m 4 /C 2 ) and high energy-storage efficiency η (92%) were obtained in 2 mol% Pr 3+ -doped PIN-PMN-PT ceramic in the ergodic relaxor (ER) phase at room temperature. The giant electrostrictive effect and excellent energy-storage performance are related to the field-induced dynamic behavior of polar nanoregions (PNRs). The results show that the PIN-PMN-PT:Pr 3+ system is an excellent multifunctional material for making electromechanical and energy storage devices.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2023
·
IF 5.4
Huimin Li,Shan Wang,Ran Pang,Lihong Jiang,Da Li,Su Zhang,Chengyu Li,Hongjie Zhang
Contactless thermometer based on fluorescence intensity ratio shows unparalleled characteristics compared with traditional contact thermometers. However, few materials are suitable for high temperature (above 573 K) measurement. In this work, Pr 3+ was selected as the emitter and Y 3 GaO 6 :xPr 3+ luminescent thermometers were designed. The phase, crystal structure and morphology were identified using X-ray diffraction, Rietveld refinement and scanning electron microscope. The spectra with multiple ranges were temperature sensitive due to the cross-relaxion mechanism that occurs in the luminescence process. The parameters for temperature measurement were determined based on the peak intensity ratio of 506 and 610 nm at different temperatures (from 293 to 823 K). Y 3 GaO 6 :0.01Pr 3+ displays excellent temperature sensitive performance, in which the relative sensitivity values increase along with the temperature in a wide temperature range and reach 4.09 % K −1 . The thermometric visualization in Y 3 GaO 6 :xPr 3+ can be achieved due to the widely varying luminescence colors at different temperatures.
研究领域:
材料科学
·
光学工程
·
无机化学
·
传感器技术
·
功能材料
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2024
·
IF 7.2
Hongwei Zheng,Xiaoming Wang,Zhuo Li,Tianhui Liu,Hui Fu,Hu Zhang,Zupei Yang,Huan Jiao
The exploration of new luminescent materials is driven by potential applications in solid-state lighting and display technologies. In this paper, we employed an anionic condensation approach to craft novel oxonitridosilicate compounds by substituting 3O2– with 2N3– in a carefully selected system. This approach enabled us to synthesize a highly condensed oxonitridosilicate compound LaSr4Si5N9O2, which crystallizes in the orthorhombic crystal system with the space group Ama2 (no. 40) and lattice parameters a = 9.2986(1) Å, b = 23.4382(1) Å, c = 5.371(1) Å, V = 1170.55(1) Å3, and Z = 4. The condensation appears inside the layer, with dreier rings originating from neighboring tetrahedra connected by bridging nitride (N[2]). This enriches the possibility of using the approach to design multiple layered or other featured oxonitridosilicates. Furthermore, we investigated the luminescence properties when doped with rare-earth ions. The Pr3+-doped LaSr4Si5N9O2 exhibits a remarkably narrow-band red emission (λem ≈ 618 nm, fwhm ≈ 54 nm) when excited by UV and blue light.
研究领域:
材料科学
·
固态照明
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显示技术
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DOI
高影响因子
ADVANCED MATERIALS
·
2024
·Vol. 36
·期 50
·2411804
·
IF 27.4
Huimin Li,Yanmin Yang,Pei Li,Dengfeng Peng,Leipeng Li
Mechanoluminescent materials have broad application prospects in advanced displays, stress imaging, and anti-counterfeiting owing to their ability to convert mechanical stimuli into light. However, most previous studies have focused on the visible and near-infrared regions. Although natural ultraviolet C (UVC) light is nearly absent on the Earth's surface, it plays an important role in many fields. Therefore, the development of smart materials capable of emitting UVC mechanoluminescence (ML) and expanding the application scenarios of UVC ML are significant but challenging. Here the ML property of Sr 2 P 2 O 7 :Pr 3+ is examined, which stems from the 5d→4f transition of Pr 3+ and is located over the UVC region. The peak wavelength of the UVC ML of Sr 2 P 2 O 7 :Pr 3+ is ≈230 nm, which is, to the best of this knowledge, the shortest ML wavelength reported to date. It is further demonstrated that the UVC ML of Sr 2 P 2 O 7 :Pr 3+ is associated with trapped charge carriers and can be conveniently regulated by adjusting the X-ray excitation time. Relying on this unique characteristic, the potential of the UVC ML of Sr 2 P 2 O 7 :Pr 3+ as an indicator of the X-ray radiation dose is demonstrated. This study enriches the family of mechanoluminescent materials and expands the available wavelength of ML to the UVC region.
研究领域:
材料科学
·
生物医学工程
·
辐射物理
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光学功能材料
·
核医学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Sikai Wang,Ziyang Wu,Lei Sun,Jinjun Ren,Xiaoxin Zheng,Jianzhong Zhang,Jing Ren
To overcome the challenges associated with conventional ultraviolet-C (UV-C) light-emitting devices—such as toxic mercury, aging of organic adhesives, and various stability concerns—an efficient UV-C emitting nano-glass composite (nano-GC) has been developed. The transparent nano-GCs embedded with Pr3+-doped Li(Al7B4O17) nanocrystals (NCs), achieved through precise modulation of the fluoride content in the glass matrix network. The unique architecture of these nano-GCs synergistically combines the high luminescence efficiency characteristic of crystalline phase with the robustness of glass. Upon excitation by deep-UV, X-ray and high energy electron-beam, the nano-GCs exhibit pronounced 5d-4f interconfigurational emissions of Pr3+, with their emission profile closely aligning with the germicidal effectiveness curve. Although the transmittance of nano-GCs is reduced compared to that of precursor glass (PG), their UV-C luminescence output is significantly enhanced—e.g., a sixfold increase under e-beam pumping. These nano-GCs achieve an impressive photoluminescence quantum yield of up to 25.93%, surpassing most previously reported Pr3+ doped glasses and nano-GCs. Moreover, the nano-GCs exhibit robust X-ray excited luminescence, with an intensity more than twice that of the commercial Bi4Ge3O12 (BGO) crystal, and exhibit a highly linear response to X-ray dose, accompanied by a decay time of 24.13 ns under γ-ray excitation. Collectively, this study presents a novel approach to the development of disinfection phosphors and fast scintillators.
研究领域:
材料科学
·
光学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2023
·
IF 5.4
Zhihao Zhang,Huimin Li,Ran Pang,Wenjing Wang,Da Li,Lihong Jiang,Su Zhang,Hongjie Zhang
Phosphor-converted light emitting diodes (pc-LEDs) are essential for current lighting and display areas because of their unique properties of being uncomplicated, durable and economical. In previous studies, Pr 3+ doped red-emitting phosphors have attracted enormous research interest due to their high color purity. However, their photoluminescence excitation (PLE) spectra are always hard to be combined with LED chips. This mismatch is a great obstacle to achieve Pr 3+ phosphors utilizing in LED devices. Here, to circumvent this issue, Pr 3+ -doped Ca 3 MgTiGe 3 O 12 (CMTG) red-emitting phosphor was optimized with PLE band shifting from 330 nm to 360 nm after tuning with Bi 3+ co-doping based on the structure and phosphorescence properties. The chip-matched excitation makes it a good candidate for white LEDs (wLEDs) fabrication to improve the output quality of device. Meanwhile, the high color purity of 93.02 % was obtained, which is conducive to widening the color gamut of backlight display applications. The photoluminescence (PL) spectra, fluorescence lifetime, and X-ray photoelectron spectroscopy (XPS) analysis were employed and discussed in detail to explain the role of Bi 3+ played in the system. Finally, wLEDs were fabricated with CMTG:Pr 3+ , Bi 3+ , showing a high color rendering index (Ra) of 94.4. And the color gamut covers ∼80 % of the National Television System Committee (NTSC) standard, suggesting great potential for applications of wLEDs and backlight display.
研究领域:
材料科学
·
发光材料
·
固态照明
·
显示技术
·
无机化学
·
光电子学
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DOI
高影响因子
危险品化学品经营许可证（带存储）