JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2025
·
IF 3.8
Mengqiu Guan,Wenhan Han,Kailei Lu,Yuhong Xie,Zijie Li,Yucheng Ye,Guixin Wang,Jianqi Qi,Tiecheng Lu
In response to the urgent demand for windows with multi-mode self-calibrated temperature feedback operating over a wide range in extreme environments, herein, Pr 3+ –Er 3+ co-doped Y 2 Zr 2 O 7 (YZO) transparent ceramics were developed. After annealing treatment to remove defects, these ceramics exhibit high transparency and temperature-dependent wide-range photoluminescence, in which the in-line transmittance is up to 77.8% at 760 nm (theoretical limit is 78%), and the luminescence band spans blue to red. Furthermore, based on the luminescence intensity ratio technology, a multi-mode temperature sensing window using highly transparent YZO:Pr/Er ceramics was designed. The developed photothermal window shows relatively high sensitivity, in which absolute sensitivity ( S a ) and relative sensitivity ( S r ) reached 0.0105 K −1 at 363 K and 1.295% K −1 at 301 K, respectively. The developed thermometer could provide a reference for self-calibrated thermometer window, and its wide spectral operating range ensures the reliability of temperature measurement, which has the potential to be used in some extreme conditions.
研究领域:
材料科学
·
光学工程
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Shanshan Zhao,Saima Kanwal,Weiwen Su,Hui Lin,Zhaoxia Han,Songlin Zhuang,Dechao Yu,Dawei Zhang
On basis of fluorescence intensity ratio (FIR) over certain narrow coupled levels of rare-earth ions, up-conversion of RE-doped materials perform excellent temperature-sensing abilities for thermometry applications. A series of Pr 3+ /Gd 3+ co-doped Ca 2 Al 2 SiO 7 phosphors (Ca 2 Al 2 SiO 7 :Pr 3+ /Gd 3+ ) were prepared by a conventional high-temperature solid-state reaction. Under excitation of blue ∼445 nm, the Ca 2 Al 2 SiO 7 :Pr 3+ /Gd 3+ phosphor yields intense photoluminescence (PL) bands around 489, 528, 537, 580, 604, 613, and 646 nm due to electronic transition of 3 P 0 → 3 H 4 , 3 P 0 → 3 H 5 , 3 P 1 → 3 H 5 , 3 P 1 → 3 H 6 , 1 D 2 → 3 H 4 , 3 P 0 → 3 H 6 , and 3 P 0 → 3 F 2 of Pr 3+ , respectively. Their relative intensities are sensitively determined by Pr 3+ contents, which, from 0.1 % to 5 %, tune the emission color from pink to warm white under excitation of 445 nm. It is of great interest that intense irradiation using a blue ∼445 laser does make efficient ultraviolet B (UVB) up-conversion at about 297, 306, and 313 nm, just stemming from the 6 P 3/2 → 8 S 7/2 , 6 P 5/2 → 8 S 7/2 , and 6 P 7/2 → 8 S 7/2 of Gd 3+ , respectively. A typical two-photon absorption process was proved to account for the UVB up-conversion, i.e. successive absorption of two blue ∼445 nm photons populating Pr 3+ 4f5d excited state, which further efficiently transfer its energy to the 6 I J / 6 P J states of Gd 3+ neighbor for UVB emission. Moreover, the thermally coupled levels (TCLs) of Gd 3+ : 6 P 3/2 - 6 P 7/2 , and Gd 3+ : 6 P 5/2 - 6 P 7/2 were thoroughly investigated for temperature sensing in 298–598 K. Maximum relative sensitivity of the 6 P 3/2 - 6 P 7/2 TCLs, i.e. S r (I 306 /I 313 ), is proved to be 0.96 % K −1 at 298 K, and that of the 6 P 5/2 - 6 P 7/2 TCLs, i.e. S r (I 297 /I 313 ), is 1 % K −1 at 373 K. The relevant thermal stabilities of the Ca 2 Al 2 SiO 7 :Pr 3+ /Gd 3+ thermometric candidate was well validated with 10 cycles of heating and cooling processes in 298–598 K. Such continuous explorations of Pr 3+ /Gd 3+ co-doping system will significantly promote the development of robust UVB up-converting phosphors as well as their practical applications in the field of high-resolution optical thermometry.
研究领域:
材料科学
·
光学
·
热测量技术
✓ 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
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Yushan Deng,Xi Ouyang,Manwen Yao,Xi Yao
Heterovalent ion doping has influenced the further development of piezoelectric applications. Pr 3+ doping in relaxor ferroelectrics is rarely focused on piezoelectric performance enhancement. 0.51 Pb(Ni 1/3 Nb 2/3 )O 3 -0.49 Pb(Hf 0.3 Ti 0.7 )O 3 (PNN-49PHT) ceramics with Pr 3+ doping ceramics were designed and fabricated by a two-step precursor method. Excellent dielectric diffusion coefficient ( γ ) of 1.96 was achieved at the low Pr 3+ doping concentration of 0.2 %. Increased relaxation enhanced the nanoscale domains formation, resulting in a giant strain response ( d* 33 ) of 1400 pm/V at 10 kV/cm, and a total strain ( S tol ) of 0.27 % at 20 kV/cm. Structural refinement unveiled that the high piezoelectricity originated from the mainly substitution of Pr 3+ for Pb 2+ at the A-site, inducing lattice distortion and phase transitions. Local domain switching and long-range ordered destruction were investigated by piezoresponse force microscopy (PFM) and Scanning Electron Microscopy (SEM). These findings contribute to the advancement of piezoelectric devices and provide valuable insights for the design and optimization of high-performance piezoelectric ceramics .
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
DALTON TRANSACTIONS
·
2021
·Vol. 50
·期 24
·8457-8466
·
IF 4.39
Shao Yan,Yanjie Liang,Yafei Chen,Jingwei Liu,Dongxun Chen,Zhengwei Pan
Visible and infrared persistent phosphors have gained considerable attention in recent years and are being widely used as glow-in-the-dark materials in dark environments. In contrast, the progress in persistent phosphors emitting at the other end of the spectrum, i.e., the shorter-wavelength ultraviolet-C (UVC; 200–280 nm), is rather slow. Here we report the design and synthesis of a well-performing Pr3+-doped UVC emissive persistent phosphor, Lu2SiO5:Pr3+, which exhibits intense UVC persistent luminescence peaking at 270 nm and a long persistence time of more than 12 h after excitation with a 254 nm UV lamp. Besides, the UVC persistent luminescence of a UV pre-irradiated sample can be repeatedly revived after repeated short-illumination with low-energy white light via a process called photostimulated persistent luminescence. Owing to the distinct spectral features of UVC light and the self-sustained luminescence properties, the UVC persistent luminescence of the Lu2SiO5:Pr3+ persistent phosphor can be clearly monitored and imaged using a corona camera in bright environments including direct sunlight and indoor light. The Lu2SiO5:Pr3+ persistent phosphor is expected to find promising applications in the covert optical tagging field.
研究领域:
材料科学
·
光学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xinwen Liu,Guolong Tan,Zhiwei Zhou,Weiwei Li,Yu Yang,Zaichun Sun,Bingchu Mei
As one of the quickest inorganic scintillators, BaF 2 crystal is projected to be used in medical treatment, high energy physics, geological research, and other sectors. A series of Pr:BaF 2 polycrystalline transparent ceramics with nominal Pr 3+ concentrations (0.1–5 at%) were synthesized via HP sintering in this research. XRD , FE-SEM, and TEM measurements were used to analyze the phase composition and microstructure of BaF 2 precursor powders with varying Pr-doping levels, and the results demonstrated that as concentration increases, the size of the nanopowders decreases. Furthermore, the morphology shifted from uniform square to uneven sheet. Cross-sectional SEM pictures of all samples revealed a clean grain boundary with no remaining pores or contaminants. The absorption spectra , emission spectra, and fluorescence lifetime of a group of Pr:BaF 2 transparent ceramics with excellent optical transmittance were measured and discussed after hot-pressing the precursor powders synthesized via co-precipitation method at 900 °C under an axial pressure of 50 MPa for 4 h.
研究领域:
材料科学
·
光学工程
✓ 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
·
光学工程
·
生物医学工程
✓ 已验证
产品关联
DOI
JOURNAL OF MATERIALS SCIENCE
·
2018
·Vol. 54
·期 4
·2897-2907
·
IF 2.993
Wu Honge,Fang Ming,Fei Guang Tao,Hu Ze Min,De Zhang Li
LaF 3 nanocrystals (NCs) are usually used as good host matrix for down-conversion phosphors owing to their impressive photophysical properties. In this study, Pr 3+ -activated LaF 3 with hollow hexagon nanostructures (HHNs) is achieved by a green and eco-friendly hydrothermal method without any catalyst, template, or surfactant. The pore structure of the LaF 3 HHNs is greatly affected by the content of Pr 3+ ions and hydrothermal reaction time. The LaF 3 : Pr 3+ NCs excited by 467 nm light show strong emission peaks locating in visible light region (centered at 612 and 635 nm) and the first biological window region (existed in 689 and 721 nm), respectively. The relative photoluminescence (PL) intensity of LaF 3 : Pr 3+ NCs from 20 to 60 °C (biological temperature) decreases slightly and decreases only 20% at 120 °C. The PL emission intensity could reach the maximal value with doping ~ 1.5% Pr 3+ ions. Based on the outstanding photophysical properties, LaF 3 : Pr 3+ NCs will be used for both warm white light-emitting diodes and bio-imaging.
研究领域:
材料科学
·
光学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
INORGANIC CHEMISTRY
·
2020
·
IF 4.825
Hang Zhang,Yujun Liang,Hang Yang,Shiqi Liu,Haoran Li,Yuming Gong,Yongjun Chen,Guogang Li
As increasing demand for noncontact temperature sensing, the development of a high-performance optical thermometer probe is more and more urgent. In this work, an efficient dual-mode optical thermometry strategy based on the Pr3+/Dy3+ energy transfer (ET) in some typical double-perovskite oxides is presented, which offers a promising way to design FIR/lifetime dual-mode optical thermometry with excellent temperature-measuring sensitivity and signal discrimination. According to this strategy, double-perovskite La2MgTiO6:Pr3+/Dy3+ phosphors are successfully synthesized. On the basis of diverse thermal responses between Pr3+ and Dy3+, the FIR of Pr3+ to Dy3+ (four FIR mode) in this material displays outstanding optical thermometry performance from 298 to 548 K. The maximum absolute and relative sensitivities (Sa and Sr) of mode 1 are 0.09 and 2.357% K–1, being better than the current optical temperature measurement materials. For the fluorescence lifetime mode, the Sa-max and Sr-max values reach 2.85 × s 10–4 and 1.814% K–1. Furthermore, the dual-mode optical thermometry mechanism was presented and studied. It also demonstrated excellent optical thermometry performance in the other Pr3+/Dy3+ codoped double-perovskite oxides, such as LaMg0.598Nb0.402O3, NaLa(MoO4)2, NaGd(MoO4)2, and NaLa(WO4)2, proving the universality of the presented strategy. This article presents an effective Pr3+/Dy3+ ET pathway for developing new and highly sensitive FIR/lifetime dual-mode optical temperature sensing materials.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Luhui Zhou,Peng Du,Quan Zhang,Jiujun Zhu,Yafei Hou,Laihui Luo,Weiping Li
The Pr 3+ -doped Ba 0·77 Ca 0·23 TiO 3 ferroelectric ceramics , which were sintered by means of a high-temperature solid-state reaction technology, were prepared. The Rietveld X-ray diffraction refinement and Raman spectrum proved that the resultant compounds had tetragonal phase. With the addition of Pr 3+ ions, the highest remanent polarization of the resultant ceramics was nearly two times higher than that of the pure Ba 0·77 Ca 0·23 TiO 3 ceramics. With the aid of a theoretical calculation based on the temperature-dependent dielectric constant, it is found that the synthesized compounds pertained to the relaxor-like ferroelectrics . Furthermore, through the piezoresponse force microscopy technique, the effect of Pr 3+ ions doping on the domain structure of the Ba 0·77 Ca 0·23 TiO 3 ferroelectric ceramics was studied. Additionally, the prepared ferroelectric ceramics can exhibited the characteristic emissions of Pr 3+ ions when excited by 450 nm light. The strongest emission intensity was achieved when the dopant content was 0.5 mol% and the dipole-quadrupole interaction contributed to the relevant concentration quenching mechanism.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2023
·Vol. 11
·期 13
·4492-4499
·
IF 6.4
Xulong Lv,Xihui Shan,Yi Zhang,Yanjie Liang
Photostimulated luminescence (PSL) materials have attracted considerable attention in many important fields, varying from radiation dosimetry and biomedical imaging to security encryption and optical data storage. Nevertheless, monochromatic light illumination is usually used as the stimulus source to realize the absolute separation between the PSL signal and the excitation light. Furthermore, a dark environment is considered necessary to get rid of the interference from polychromatic ambient light. Herein, we report a glow-in-the-daylight material, YBO3:Pr3+, which can emit intense and long-lasting ultraviolet-C (UVC) persistent luminescence in a bright indoor lighting or outdoor sunlight environment after ceasing X-ray excitation. We note that although the YBO3:Pr3+ phosphor shows very weak UVC afterglow in darkness, remarkable enhancement of UVC persistent luminescence can be observed in a bright ambient light environment. The UVC persistent luminescence peaking at 274 nm can last for more than 24 h under the illumination of 900 lux white LED light, and the UVC luminescence signal is free from the interference of the ambient light. This enhancement of UVC persistent luminescence is assigned to the continuous and efficient photostimulation of polychromatic ambient light, which has been confirmed by comprehensive spectroscopic investigations. The appealing glow-in-the-daylight phenomenon from the YBO3:Pr3+ phosphor will not only lay the foundation to develop more UVC persistent phosphors suitable for working in a bright environment, it will also promote the widespread use of these storage phosphors across a broad range of applications such as microbial inactivation and optical tagging.
研究领域:
材料科学
·
光学工程
·
生物医学工程
✓ 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）