JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
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IF 3.5
Xuekai Wang,Yongze Cao,Xianglan Yan,Guojian Li,Xiangping Li,Jinshu Zhang,Baojiu Chen
Hexagonal Er 3+ /Yb 3+ co-doped LaZrTa 3 O 11 (LZTO) phosphor was prepared by molten salt synthesis with B 2 O 3 flux. Holding temperature, holding time, solute and solvent ratio were regulated. The green upconversion luminescence (UCL) integral intensity of the optimal sample can reach 29.2% of β-NaYF 4 :Er 3+ /Yb 3+ under 980 nm laser excitation. This outstanding pure green UCL is due to the low phonon energy, Er 3+ /Yb 3+ monolayer (2D) distribution, asymmetry of Er 3+ /Yb 3+ doped lattice sites, and low oxygen vacancy. The maximum relative temperature sensitivity attains 0.01221 K −1 at 303 K by employing luminescence intensity ratio (LIR) technique. LZTO:Er 3+ /Yb 3+ phosphor can be used in temperature sensing.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Nano Materials
·
2024
·
IF 5.3
Xiang Long,Jing Hu,Hongxiang Liu,Shaogui Wu
Ultraviolet-emitting fluorescent carbon dots (U-CDs) were successfully synthesized via a simple one-step hydrothermal method using benzene-1,3,5-tricarboxylic acid as the carbon source and o-phenylenediamine (OPD) as the nitrogen source. The U-CDs had an average particle size of 6.53 nm and were rich in functional groups such as amino, hydroxyl, carboxyl, and carbonyl moieties. Their fluorescence excitation and emission wavelengths were observed at 325 and 365 nm, respectively, with an impressive photoluminescence quantum yield of approximately 20%. The U-CDs also exhibited excellent water solubility, salt resistance, and photobleaching resistance. By harnessing these unique properties, a bifunctional fluorescent probe was developed to detect Hg2+ concentration and temperature. The probe showed a strong linear response to Hg2+ in the range of 0–42 μmol/L and to temperature between 30 and 60 °C, demonstrating high sensitivity and a low detection limit. These characteristics make the probe ideal for analyzing real samples. This work not only expands the family of carbon dots but also introduces a simple and cost-effective method to synthesize multifunctional U-CDs, advancing their application in temperature and metal ion sensors.
研究领域:
材料科学
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分析化学
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产品关联
DOI
高影响因子
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
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光学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2024
·
IF 5.7
Xiao Wang,Yanyan Li,Haitao Tang,Ruiming Li,Xiaodi Hao,Meng Li,Jiale Zhao,Liyan Yang,Yu Chen,Qianqian Lin,Mufang Li,Dong Wang
Double halide perovskites are widely utilized in photocatalysis, photovoltaics, and light emission owing to their nontoxicity and chemical stability. Their excellent temperature-dependent optoelectronic properties also provide the potential for temperature sensing. However, most double halide perovskites typically exhibit low photoluminescence quantum yields due to indirect bandgaps and parity-forbidden transitions, limiting their further applications. Here, we report the synthesis of Cs2NaInCl6 double perovskites via the hydrothermal method, introducing Sb3+ to enhance broad blue emission. Additionally, Mn²⁺ co-doping is employed to achieve tunable dual emission, ensuring the phase stability and efficient luminescence output of the Cs2NaInCl6. By testing photoluminescence spectra at a broad working temperature ranging from 300 to 500 K, a visible color change from purple to dark salmon was observed as the temperature increased, resulting in higher absolute and relative temperature sensitivity of 0.008 K-1 and 1.2% K-1, respectively. Furthermore, Cs2NaInCl6:Sb3+-Mn2+ was integrated into the fiber or attached it to the fiber surface. Under varying temperatures, the fiber exhibited a color change, demonstrating that Sb³⁺-Mn²⁺ co-doped Cs₂NaInCl₆ is a promising material for fiber-based optical temperature sensing in temperature and safety monitoring applications.. Notably, the thermal behavior of the sensor enables its application in wearable flexible display, lighting and anti-counterfeiting.
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
Advanced Optical Materials
·
2024
·
IF 8
Changhe Hu,Xiao Li,Wenfeng Xie,Jie Liu,Huhui Fu,Yaning Zhang,Jingbing Lu,Qi Xiong,Yuanqi Qian,M. Liu
Alkaline zirconium fluorides (A x Zr y F x+y , A = Li, Na, and K), featuring unique crystallographic structures, have recently emerged as a class of attractive hosts for fabricating lanthanide (Ln 3+ )-doped upconversion nanocrystals (UCNCs) that exhibited distinct morphology, upconversion luminescence (UCL) performance, and physicochemical property. In this paper, for the first time the controlled preparation of Yb 3+ /Er 3+ -doped UCNCs is reported based on the trigonal Cs 2 ZrF 6 host, leading to tunable morphology and size of the resulting UCNCs by varying the reaction temperature and time. By further incorporating Na + ions into the Cs 2 ZrF 6 crystal lattice, sub-10 nm Yb 3+ /Er 3+ /Na + tridoped UCNCs with highly improved crystallinity and thus greatly enhanced UCL intensity are obtained. Moreover, these resulting UCNCs display abnormal thermal enhancement of UCL over a temperature range from 333 to 493 K, enabling the fabrication of supersensitive luminescent nanothermometers for temperature sensing. Based on the luminescence intensity ratio of two nonthermally coupled levels (i.e., 4 F 9/2 and 2 H 11/2 ) of Er 3+ , the as-prepared Cs 2 ZrF 6 :Yb/Er/Na UCNCs exhibit an extremely large absolute sensitivity of 177.3% K −1 and a considerably high relative sensitivity of 1.52% K −1 at 333 K. These results unambiguously demonstrate that Cs 2 ZrF 6 is a suitable host material for preparing small-sized Ln 3+ -doped UCNCs as nanothermometer for high-performance ratiometric temperature sensing.
研究领域:
材料科学
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光学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2025
·
IF 7.2
Zehua Zhang,Lili Wang,Ruiliang Zuo,Zhenzhen Jiang,Guangyong Jin
The single-component white light emission microcrystals were synthesized in Bi 3+ /Sb 3+ /Ho 3+ ions tri-doped Cs 2 Ag 0.2 Na 0.8 LuCl 6 double perovskites by a simple precipitation method. In Bi 3+ /Sb 3+ ions double-doped Cs 2 Ag 0.2 Na 0.8 LuCl 6 microcrystals, the tunable emission from yellow (Bi 3+ ) to blue (Sb 3+ ) can be achieved under ultraviolet light excitation. Particularly, the white light emission is obtained after doping Ho 3+ ion because of the energy transfer processes of Bi 3+ →Ho 3+ and Sb 3+ →Ho 3+ . The chromaticity coordinates (CIE) of Cs 2 Ag 0.2 Na 0.8 LuCl 6 :5 mol% Bi 3+ ,1 mol% Sb 3+ ,15 mol% Ho 3+ microcrystal are (0.3354, 0.3394) under 315 nm excitation. Meanwhile, the white light emissions with different color temperatures are obtained through varying the excitation wavelength (255–365 nm). Additionally, temperature-dependent fluorescence spectra show that the emission intensity of Bi 3+ /Sb 3+ /Ho 3+ tri-doped Cs 2 Ag 0.2 Na 0.8 LuCl 6 microcrystal at 423 K remains 54% of that at 303 K. Moreover, the fluorescence intensity ratio (FIR) of 641 and 665 nm is highly temperature-dependent, the relative sensitivity ( S r ) reaches 1.06%/K at 303 K under 315 nm excitation. Simultaneously, the microcrystal shows thermochromism phenomenon, and the emission changes from white to blue-purple with the increase of temperature from 303 to 513 K. The novel temperature sensing is achieved based on CIE coordinates and temperature technology in Cs 2 Ag 0.2 Na 0.8 LuCl 6 :5 mol% Bi 3+ ,1 mol% Sb 3+ ,15 mol% Ho 3+ microcrystal by exciting at 315 nm. The corresponding maximum S r is 0.34%/K. Accordingly, Bi 3+ /Sb 3+ /Ho 3+ ions tri-doped Cs 2 Ag 0.2 Na 0.8 LuCl 6 double perovskite has potential applications in the fields of white light emitting diode and optical temperature sensing.
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
INORGANIC CHEMISTRY
·
2024
·
IF 4.3
Xi Chen,Yuexiao Pan,Yihong Ding,Hongzhou Lian,Jun Lin,Liyi Li
The quest for efficient and tunable luminescent materials has been at the forefront of research in the fields of chemistry and materials science. This work delves into the investigation of the luminescence properties of Er3+ ions triggered by 1% Te4+ in the environmentally benign perovskite Cs2NaYbCl6 (CNYC) crystals, aiming to enhance their efficiency and tune the luminescence color. The ratio of the green (2H11/2, 4S3/2–4I15/2) to red (4F9/2–4I15/2) emissions of Er3+ can be freely tunable by varying the concentration of Er3+ and producing the defects induced by codoping Te4+. The calculations reveal that the multiexcitonic excitations of Er3+ stem from f–f (4I15/2–4G11/2, 2H9/2) rather than d–f transitions. The broadened excitation, tuning of color, and enhancement of efficiency achieved in the luminescence perovskite crystals Cs2NaYbCl6:Te4+, Er3+ (CNYC:Te4+,Er3+) presents promising opportunities for the development of advanced optoelectronic devices with superior performance. Moreover, our investigation demonstrates the tunable luminescence response of CNYC:Er3+ to temperature variations, offering potential applications in temperature sensing.
研究领域:
材料科学
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光学
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物理化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2021
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IF 4.527
Yalin Qin,Fuxuan Han,Peikun Yan,Yaqi Wang,Yongcheng Zhang,Shujun Zhang
A transparent ferroelectric 0.75Pb(Mg 1/3 Nb 2/3 )O 3 -0.25PbTiO 3 :0.015Pr 3+ ceramic was synthesized and its temperature-sensing ability was investigated based on the fluorescence intensity ratio (FIR) method. The transparency was found to be of the order of 68% at 900 nm for a sample thickness of 0.7 mm, comparable to the theoretical value of ~71%, benefiting the photoluminescence of the Pr 3+ ions inside the ceramic. Instead of the traditional Boltzmann exponential style and varying sensitivity, a highly linear temperature response was obtained for the studied ceramic. Further, a constant FIR sensitivity of 0.70 %K -1 was achieved over the temperature range of -50–40 °C, making the ceramic suitable for thermometry at room temperature and below.
研究领域:
材料科学
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光学
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传感器技术
✓ 已验证
DOI
高影响因子
NANOTECHNOLOGY
·
2023
·Vol. 34
·期 23
·235704
·
IF 3.5
Yanxing Wang,Wenjing Li,Yaqun Ma,Bo Hu,Xueli Chen,Ruichan Lv
In this research, a thermally activated upconversion luminescence (UCL) probe with ratiometric temperature sensing under 1064 nm and 808 nm excitation was designed. Especially, Nd3+, Tm3+ and Ce3+ were doped in rare earth nanoparticles (RENPs) as UCL modulators. By optimizing the elements and ratios, the excitation wavelength is successfully modulated to 1064 nm excitation with UCL intensity enhanced. Additionally, the prepared RENPs have a significant temperature response at 1064 nm excitation and can be used for thermochromic coatings. The intensity ratio of three-photon UCL (1064 nm excitation) to two-photon UCL (808 nm excitation) as an exponential function of temperature can be used as a ratiometric temperature detector. Therefore, this designed thermochromic coatings may enable new applications in optoelectronic device and industrial sensor.
研究领域:
材料科学
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光学
✓ 已验证
DOI
高影响因子
Research
·
2023
·
IF 11
Jun Wu,Yinghui Li,Shengshun Duan,Zhehan Wang,Xu Jing,Yucheng Lin,Di Zhu,Wei Lei,Qiongfeng Shi,Li Tao
Temperature sensing is of high value in the wearable healthcare, robotics/prosthesis, and noncontact physiological monitoring. However, the common mechanic deformation, including pressing, bending, and stretching, usually causes undesirable feature size changes to the inner conductive network distribution of temperature sensors, which seriously influences the accuracy. Here, inspired by the transient receptor potential mechanism of biological thermoreceptors that could work precisely under various skin contortions, we propose an MXene/Clay/poly(N-isopropylacrylamide) (PNIPAM) (MCP) hydrogel with high stretchability, spike response, and deformation insensitivity. The dynamic spike response is triggered by the inner conductive network transformation from the 3-dimensional structure to the 2-dimensional surface after water being discharged at the threshold temperature. The water discharge is solely determined by the thermosensitivity of PNIPAM, which is free from mechanical deformation, so the MCP hydrogels can perform precise threshold temperature (32 °C) sensing under various deformation conditions, i.e., pressing and 15% stretching. As a proof of concept, we demonstrated the applications in plant electronics for the real-time surface temperature monitoring and skin electronics for communicating between human and machines. Our research opens venues for the accurate temperature-threshold sensation on the complicated surface and mechanical conditions.
研究领域:
材料科学
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生物医学工程
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电子皮肤
✓ 已验证
DOI
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2018
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IF 2.207
Yong Shi,Fengming Yang,Chuanzhen Zhao,Yan Huang,Mengzhu Li,Qingjun Zhou,Qiuyue Li,Zepeng Li,Junming Liu,Tong Wei
Up-conversion (UC) oxides comprise a huge family of materials with abundant optical functionalities and they merit extensive research. Some members of this family have been modified with proper rare earth (RE 3+ ) ions and their importance has recently been established in non-contact temperature sensors , although the thermal sensitivity (S) value was still low. In this study, we investigated Nd 3+ and Yb 3+ sensitized Ba 4 La 2 Ti 4 Nb 6 O 30 (BLTN:xNd 3+ /Yb 3+ ) with a tungsten bronze structure for use as optical thermometers for the first time. Under excitation at 980 nm, obvious near-infrared emissions corresponding to 4 F 7/2 / 4 S 3/2 → 4 I 9/2 , 4 F 5/2 / 2 H 9/2 → 4 I 9/2 , and 4 F 3/2 → 4 I 9/2 transitions were observed, and the UC mechanism involved was elaborated. Furthermore, the UC thermometric properties were investigated according to the fluorescence intensity ratio technique and the maximum S values determined for BLTN:xNd 3+ /Yb 3+ (x = 0.12 and 0.16) samples were both higher than 0.03 K –1 . The potential of BLTN:xNd 3+ /Yb 3+ for use in optical thermometers was estimated based on comparisons with other active materials.
研究领域:
材料科学
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光学工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 35
·18256-18266
·
IF 14.511
Fu-Lin Gao,Peng Min,Xuan-Zhi Gao,Changjun Li,Tingting Zhang,Zhong-Zhen Yu,Xiaofeng Li
Conventional temperature–pressure bifunctional sensors based on thermoresistive and piezoresistive effects could not meet the growing demand for detecting multiple signals due to their intractable signal-coupling problems. It is imperative to develop new approaches to detect multiple stimuli with single devices without complex decoupling processes. Herein, integrated temperature and pressure dual-mode sensors are fabricated by decorating elastic polydopamine-modified PDMS (PDA@PDMS) foam with thermoelectric PEDOT:PSS/carbon nanotube (CNT) components. The resultant PEDOT:PSS/CNT@PDA@PDMS (PCPP) sensor exhibits an accurate temperature sensing capability with an ultrahigh Seebeck coefficient of 40.5 μV K−1 and an ultralow detectable temperature of 0.05 K. Thanks to the elastic and porous PDMS foam and the thermoelectric PEDOT:PSS/CNT components, the PCPP sensor can detect both static and dynamic pressures with high sensitivity, fast response time, a wide detection range, and excellent durability. Notably, under the simultaneous stimulation of both temperature and pressure, the dual-mode PCPP sensor can convert these two stimuli to independent voltage and resistance signals on the basis of thermoelectric and piezoresistive effects. Meanwhile, the thermoelectric effect endows the sensor with human energy harvesting capacity by exploiting the temperature gradients between human skin and the environment. All these characteristics make the dual-mode PCPP sensor promising for wearable electronic skin applications.
研究领域:
材料科学
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电子皮肤
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能量收集
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）