JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Zhanglin Chen,Songmo Du,Fei Li,Shijia Zhang,Shuo Zhao,Zhaobo Tian,Jie Zhang,Xuanyi Yuan,Guanghua Liu,Kexin Chen
Photoluminescent materials, serving as optical probes, constitute a significant medium for reliable remote sensing of fundamental state parameters such as temperature and pressure. Herein, we report a novel Mn 4+ -activated perovskite-type La 3 Mg 2 SbO 9 phosphor (LMS:Mn 4+ ) for bifunctional application in both thermometry and manometry. Upon excitation with 341 nm, LMS:Mn 4+ (0.7% Mn 4+ ) emits a bright narrow-band red light peaking at 705 nm with an FWHM (full width at half maximum) of 32 nm. As a thermometer, when the temperature surpasses 298 K, non-radiative transitions from the 2 E g excited state lead to a sharp decrease in decay lifetimes with increasing temperature. This allows for lifetime-based luminescence thermometry with a relative sensitivity of 2.52% K −1 at 391 K. Moreover, LMS:Mn 4+ was processed into a temperature-sensing coating and its non-contact thermometry functionality was validated. In manometry applications, the LMS:Mn 4+ probe experiences substantial pressure-dependent redshift with a sensitivity of 1.20 nm/GPa in the testing range of 9.48 GPa, which is about 3.3 times that of conventional ruby probes. Furthermore, its FWHM consistently remains below 37 nm, which contributes to a high reliability of pressure measurements. The above results indicate that the LMS:Mn 4+ constitutes a promising bifunctional luminescence probe material in thermometry and manometry.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2018
·Vol. 6
·期 41
·11178-11183
·
IF 5.976
Yan Gao,Yao Cheng,Tao Hu,Zeliang Ji,Hang Lin,Ju Xu,Yuansheng Wang
In this study, a double-perovskite Pr3+:Gd2ZnTiO6 thermometric phosphor is designed and successfully synthesized for the first time via a high-temperature solid-state method. By taking advantage of the intervalence charge transfer state (IVCT) interfered Pr3+ luminescence, the synthesized phosphor exhibits excellent optical thermometric performance in terms of both the fluorescence intensity ratio and luminescence lifetime. Specifically, by using the fluorescence intensity ratio between Pr3+: 3P0 → 3H4 and 1D2 → 3H4 transitions as a temperature detecting signal in the range of 293–433 K, the maximum absolute and relative sensitivities reach as high as 0.63 K−1 and 1.67% K−1, respectively; taking the fluorescence lifetime of the 1D2 state as a detecting signal in the range of 433–593 K, the corresponding sensitivities are 0.096 μs K−1 and 1.48% K−1. The results demonstrate that a thermal reading with high sensitivity over a wide range of temperature can be realized by this novel dual-mode design.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2017
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IF 2.536
Mengjiao Ma,Congcong Li,Dengkun Shu,Chaohua Wang,Peng Xi
A photoluminescent terbium (Tb) complex involving a novel benzoic-acid compound with a unique coordinated structure, namely 1,4-bis(carbonylmethyl)terephthalate (BCMT), has been designed and synthesized. The new coordinate structure and energy-transfer mechanism between the ligand and Tb(III) ions were investigated in detail. The results demonstrated that the BCMT–Tb(III) complex shows strong fluorescence intensity (4 × 10 6 a.u.) and long fluorescence lifetime (1.302 ms), owing to the favorable degree of energy matching between the triplet excited level of the ligand and the resonant level of Tb(III) ions. Based on the analysis of three-dimensional luminescence spectra , the as-prepared Tb(III) complex can be effectively excited in the range of 250–310 nm, and it shows high color purity, with a bright green appearance.
研究领域:
材料科学
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光化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Shifang Wang,Mingzheng Sun,Xiaolang Fan,Bowei Liu,Chuangchuang Qiao,Shuang Jing,Xufeng Zhou,Wei Li,Yangbo Wang,Huaiyong Li
Broad band near-infrared (NIR) emitting phosphors activated with Cr 3+ ions hold great potential for diverse applications. Microcrystalline barium gallate powders activated with Cr 3+ were synthesized, and their phase structure, photoluminescence properties as well as their potential uses in luminescence thermometry and plant cultivation, are investigated. It is revealed that Ba 1.3 Ga 12 O 19.3 : Cr 3+ exhibits high efficiency NIR emission in the 650–950 nm range upon blue excitation. At 80 K, the emission is dominated by narrow-peaks resulting from 2 E→ 4 A 2 transition. However, as the temperature rises, thermal coupling between the 2 E and 4 T 2 states leading to increased population of 4 T 2 state, the emission transforms into broad-band. At the same time, a significant decrease in lifetime is observed. This is attributed to the substantial difference in the transition probabilities of 2 E and 4 T 2 states, as well as the initiation of the nonradiative process, specifically the crossover from the 4 T 2 to the 4 A 2 state. Luminescence thermometers based on both luminescence intensity ratio (LIR) and lifetime of Ba 1.3 Ga 12 O 19.3 : 0.45 % Cr 3+ are proposed. High relative sensitivities of 6.78 %·K −1 at 113 K, and above 1 %·K −1 until 293 K is achieved from the LIR-based thermometer, and high values (ca. 1 % K −1 ) over a wide temperature range of 173–573 K are achieved from the lifetime readout.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2020
·Vol. 16
·期 48
·2004118
·
IF 11.459
Meiling Tan,Feng Li,Ning Cao,Hui Li,Xin Wang,Chenyang Zhang,Daniel Jaque,Guanying Chen
Luminescence nanothermometry is promising for noninvasive probing of temperature in biological microenvironment at nanometric spatial resolution. Yet, wavelength- and temperature-dependent absorption and scattering of tissues distort measured spectral profile, rendering conventional luminescence nanothermometers (ratiometric, intensity, band shape, or spectral shift) problematic for in vivo temperature determination. Here, a class of lanthanide-based nanothermometers, which are able to provide precise and reliable temperature readouts at varied tissue depths through NIR-II luminescence lifetime, are described. To achieve this, an inert core/active shell/inert shell structure of tiny nanoparticles (size, 13.5 nm) is devised, in which thermosensitive lanthanide pairs (ytterbium and neodymium) are spatially confined in the thin middle shell (sodium yttrium fluoride, 1 nm), ensuring being homogenously close to the surrounding environment while protected by the outmost calcium fluoride shell (CaF 2 , ≈2.5 nm) that shields out bioactive milieu interferences. This ternary structure enables the nanothermometers to consistently resolve temperature changes at depths of up to 4 mm in biological tissues, having a high relative temperature sensitivity of 1.4–1.1% °C −1 in the physiological temperature range of 10–64 °C. These lifetime-based thermosensitive nanoprobes allow for in vivo diagnosis of murine inflammation, mapping out the precise temperature distribution profile of nanoprobes-interrogated area.
研究领域:
生物医学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2019
·
IF 2.961
Lijun Gao,Cong Li,Chongzhou Wang,Jing Cui,Liming Zhou,Shaoming Fang
The rare earth complex (Eu(PBA) 3 ) with the active functional group ( OH) was prepared by p -hydroxybenzoic acid (PBA) and europium chloride in the ethanol solution. Then, the photoluminescence polyurethane (Eu(PBA) 3 /PU) materials were synthesized by the reaction of the functional groups on the complex with the isocyanates in the polyurethane reaction system. The content of the complex has great influence on photoluminescence performances of Eu(PBA) 3 /PU materials. The fluorescence intensity increases with the increase of Eu(PBA) 3 content. Especially, the obtained Eu(PBA) 3 /PU materials possess good fluorescence emission purity and a long luminescence lifetime , which have potential applications in optical display instruments.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF LUMINESCENCE
·
2021
·
IF 3.599
Dangli Gao,Yuqian Liang,Jie Gao,Hong Xin,Long Wang,Sining Yun,Xiangyu Zhang
Applications of rare-earth (Re)-doped upconversion (UC) micro/nanocrystals in varying areas have sparked a growing, constant demand for deliberate control over the luminescent profile and lifetime. A general strategy for adjusting UC luminescence is to control the dopant Re 3+ concentration. However, the progress of elevating dopant concentration is significantly limited owing to frequently encountering severe concentration quenching. Herein, by designing UC system using Tm 3+ with super long intermediate energy level lifetime and Yb 3+ with a simple two-level structure as a activator/sensitizer combination, we have achieved the unusually intense deep ultraviolet (UV) UC emissions at 290 nm and 345 nm, near UV emission at 361 nm, visible blue emissions at 452 nm and 478 nm, and near infrared (NIR) emission at 803 nm in NaYF 4 :Yb/Tm microtubes under 980 nm excitation. The luminescence intensity reaches about 56 times and 8 times enhancement for the UV and blue emission, respectively, with the increase of dopant Yb 3+ contents from 20 to 80 mol%. While luminescence lifetimes for all emissions decrease, particularly, for NIR emission at 803 nm, from 1507 μs down to 384 μs. Importantly, upon 980 nm irradiation, these UC NaYF 4 :Yb/Tm microtubes exhibit superior optical performance as a promising candidate of advanced anti-counterfeiting applications and other applications including UV light triggered reactions and multiplexing information storage.
研究领域:
材料科学
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光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2021
·
IF 5.316
Tao Wang,Sumin Hou,Huafang Zhang,Yi Yang,Wen Xu,Tianyong Ao,Miao Kang,Gencai Pan,Yanli Mao
Low-dimensional organic-inorganic hybrid perovskite materials have attracted much attention in photoelectric devices due to their exotic performance in optoelectronics compared with their bulk and thin-film counterparts. In this article, using a simple ligand-assisted deposition method, we successfully synthesized uniform methylammonium lead iodide (MAPbI 3 ) perovskite nanorods, nanotriangles and nanocubes, and investigated their photoelectric properties after fabricated into photodetectors (PDs) on SiO 2 /Si substrates. It is found that the synthesized MAPbI 3 nanorods not only have extremely small optical band gap (minimum of ~1.36 eV), but also have long photoluminescence (PL) lifetime (longest of ~7.81 μs) and high absolute PL quantum yields (maximum of ~ 45%), and the PL lifetime is more than about one order of magnitude higher than that the reported previously. The PDs based on MAPbI 3 nanorods presented a wide spectral response “window” from 350 to at least 950 nm, and exhibited a photoresponsivity of 12.2 mA/W, a detectivity of 2.67 × 10 11 Jones, the on/off ratio of more than 800, the rise/decay time constants of 18/25 ms, under the excitation at 405 nm. Further analysis suggests that the dramatically improved photo-electric conversion properties of the nanorods PDs could be closely related with their morphology dependent properties, including bandgap, PL lifetime, trap density (n trap ) and carrier concentration. These results provide a simple and effective method for preparing different morphology low-dimensional MAPbI 3 , and discuss the mechanism of morphology-dependent photoelectric performance of PDs, which is of great significance for potential applications in the field of photoelectronic devices.
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
Scientific Reports
·
2014
·Vol. 4
·期 1
·1-8
·
IF 5.078
Cao Sheng,Li Chengming,Wang Lin,Shang Minghui,Wei Guodong,Zheng Jinju,Yang Weiyou
CuInS 2 (CIS) quantum dots (QDs) have tunable photoluminescence (PL) behaviors in the visible and near infrared spectral range with markedly lower toxicity than the cadmium-based counterparts, making them very promising applications in light emitting and solar harvesting. However, there still remain material- and fabrication- related obstacles in realizing the high-performance CIS-based QDs with well-resolved Mn 2+ d-d emission, long emission lifetimes as well as high efficiencies. Here, we demonstrate the growth of high-quality Mn 2+ -doped CuInS-ZnS (CIS-ZnS) QDs based on a multi-step hot-injection strategy. The resultant QDs exhibit a well-resolved Mn 2+ d-d emission with a high PL quantum yield (QY) up to 66% and an extremely long excited state lifetime up to ~3.78 ms, which is nearly two times longer than the longest one of “green” QDs ever reported. It is promising that the synthesized Mn 2+ -doped CIS-ZnS QDs might open new doors for their practical applications in bioimaging and opto/electronic devices.
研究领域:
材料科学
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光学
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHIMICA ACTA
·
2018
·Vol. 185
·期 3
·1-9
·
IF 5.705
Li Yuemei,Li Yongmei,Wang Rui,Zheng Wei
Optical sensing of temperature by measurement of the ratio of the intensities of the 700 nm emission and the 800 nm emission of Ga(III)-doped ZnO (GZO) nanoparticles (NPs) and of GZO NPs coated with a silica shell are demonstrated at 980 nm excitation. It is found that the relative sensitivity of SiO 2 @Yb/Tm/GZO is 6.2% K −1 at a temperature of 693 K. This is ~3.4 times higher than that of Yb/Tm/GZO NPs. Obviously, the SiO 2 shell structure decreases the rate of the nonradiative decay. The decay time of the 800 nm emission of the Yb/Tm/GZO NPs (15 mol% Ga; 7 mol% Yb; 0.5 mol% Tm) displays a biexponential decay with a dominant decay time of 148 μs and a second decay time of ~412 μs. The lifetime of the Yb/Tm/GZO NPs at 293 K, and of the SiO 2 @Yb/Tm/GZO NPs are ~412 μs. Both the Yb/Tm/GZO and SiO 2 @Yb/Tm/GZO can be used up to 693 K. These results indicate that the SiO 2 shell on the Yb/Tm/GZO is beneficial in terms of sensitivity and resolution.
The enhancement the decay time and thermal sensitivity in the SiO 2 @Yb/Tm/GZO shell@core structure have been studied compared to the Ga(III)-doped Yb/Tm-doped ZnO (Yb/Tm/GZO). The SiO 2 @Yb/Tm/GZO have good thermal accuracy up to 693 °C.
研究领域:
光学传感
·
纳米材料
·
热力学测量
·
稀土掺杂材料
·
无机功能材料
✓ 已验证
DOI
高影响因子
PHOTOCHEMISTRY AND PHOTOBIOLOGY
·
2012
·Vol. 88
·期 4
·860-866
·
IF 2.413
Cheng-Hui Zeng,Yang-Yi Yang,Yi-Min Zhu,Hong-Ming Wang,Tian-Shu Chu,Seik Weng Ng
A new dinuclear terbium complex [Tb 2 (4-msal) 6 (H 2 O) 4 ]·6H 2 O ( 1 ) (4-msal = 4-methylsalcylate) was synthesized. Its structure was determined by single crystal X-ray diffraction, and the complex was characterized by PXRD, FT-IR, fluorescence, TGA and DTA. Complex 1 exists as discrete molecules that are linked by extensive O–H … O hydrogen bonds into a 3D network. The luminescence lifetimes of 3 μ m methanol solution and solid sample of 1 are 1.321 and 1.009 ms, respectively. The quantum yield of solid sample is 6.0%. The luminescence quenched more than 50% when 3% (vol/vol) different impurities (acetone, acetonitrile, chloroform, dichloromethane, dioxane, DMF, DMSO, ethanol, ether, ethyl acetate, glycol, H 2 O, hexane, TEA, THF and toluene or their mixture) were added. The inverse linear relationship between the L g value of fluorescence intensity and the volume ratio of the minor component (to a maximum of 20%) is interpreted in terms of L g I = a − bX ( I : luminescence intensity; X : volume ratio of impurities in methanol; a , b are constants). So 1 is a potential luminescent sensor for analyzing the purity of methanol.
研究领域:
化学
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材料科学
·
分析化学
✓ 已验证
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2024
·
IF 18.5
Kunjie Liu,An Hou,Jiawei Lin,Mingzhen Quan,Yan Xiong,Zhongnan Guo,Jing Zhao,Quanlin Liu
Organic–inorganic metal halides (OIMHs) possess low preparation costs and high photoluminescence quantum yield. Within a specific range, the temperature-dependent nature of OIMHs' luminescent lifetime facilitates temperature sensing and thermal imaging functionalities. In this study, a non-toxic (C 10 H 22 N) 6 SbBr 9 ·H 2 O ([C 10 H 22 N] + is 4-(tert-buty)cyclohexanamine cation) with a 0D structure crystallized in the Pbcn space group is obtained. Under blue light excitation at room temperature, it demonstrates intense broad emission centered at 635 nm. Further investigation into the correlation between temperature and photoluminescence lifetime has unveiled exceptional temperature sensing precision. The relative sensitivities within the range of power system temperature alert 30–70 °C lie between 2.5% and 4.5% K −1 . This matches the typical high-temperature warning threshold for power systems. Moreover, after immersion in water and alcohol, the compound maintains remarkable stability, with multiple heating/cooling cycles confirming its reliability under test temperatures. Additionally, a composite thin-film device composed of (C 10 H 22 N) 6 SbBr 9 ·H 2 O, showcasing its potential as a stable and durable thermal imaging temperature sensing device is fabricated.
研究领域:
材料科学
·
光学工程
✓ 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）