JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2023
·Vol. 107
·期 2
·956-967
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IF 3.9
Sai-Dong Xue,Yu-Jing Yang,De-Long Zhang
Growth of Er 3+ -doped 100-nm thick LiNbO 3 (LN) films on Z-cut LiTaO 3 (LT) single-crystal by e -beam evaporation and in-situ anneal at 600–800°C was studied. Crystalline phase, crystallographic orientation, Er 3+ spectroscopic properties, constituent element valence states, defects, Er 3+ concentration and stoichiometry of the films were characterized. The results show that the films are in LN single-crystal state and orient along with c crystallographic axis. Constituent elements Li, O and Er are present in their respective single valence states Li + , O 2− , Er 3+ , while the Nb is in two valence states Nb 5+ and Nb 4+ . The films have Li 2 O-contents around congruent point. Antisite(Nb Li 4+ ) is the major defect. Its concentration decreases, while Li 2 O-content, crystallinity degree, and fluorescence intensity increase with increased growth temperature. The presence of Er 3+ in the grown films is in the form of LN crystalline phase. Its concentration is considerably lower than that in initial target material because of lower e -beam evaporation efficiency of heavy Er 3+ .
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2025
·Vol. 131
·期 6
·1-7
·
IF 2.8
Yuan Lifang,Wang Junzhong,Huang Zhijin,Shen Kaixiang
Long afterglow phosphors have garnered significant attention for their ability to emit light long after excitation ceases. Afterglow emission relies on metastable trap levels within the bandgap of the host materials. Effective trap engineering strategies to optimize traps are critical in determining the afterglow performance. In this study, we investigate the codoping of Bi 3+ and Er 3+ into LiTaO 3 to enhance afterglow performance. Through high-temperature solid-state synthesis, a series of LiTaO 3 :x%Bi 3+ , y%Er 3+ (x = 0 or 0.5%, y = 0.1–4.0%) samples were prepared successfully. Structural characterization confirmed the successful incorporation of Bi 3+ and Er 3+ into the Li⁺ sites without disrupting the host lattice. Photoluminescence studies revealed that Bi³⁺ codoping significantly enhances the green emission of Er³⁺, with optimal performance achieved at 1.0% Er 3+ doping. Thermoluminescence (TL) analysis demonstrated the presence of traps with the depth of 0.748 eV, enabling prolonged afterglow emission at room temperature. The afterglow mechanism involves charge carrier storage in traps under UV excitation, followed by thermal release and recombination at luminescent centers, facilitated by energy transfer from Bi 3+ to Er 3+ . This work provides a strategy for designing a long afterglow phosphor through controlled codoping, offering insights into trap engineering and energy transfer processes in perovskite-based luminescent materials.
研究领域:
材料科学
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光学材料
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固体物理
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发光学
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DOI
高影响因子
Advanced Science
·
2019
·Vol. 7
·期 3
·1902538
·
IF 15.804
Mengting Si,Dandan Wang,Rui Zhao,Du Pan,Chen Zhang,Caiyan Yu,Xia Lu,Huiling Zhao,Ying Bai
As one of the most promising cathodes for next-generation lithium ion batteries (LIBs), Li-rich materials have been extensively investigated for their high energy densities. However, the practical application of Li-rich cathodes is extremely retarded by the sluggish electrode–electrolyte interface kinetics and structure instability. In this context, piezoelectric LiTaO 3 is employed to functionalize the surface of Li 1.2 Ni 0.17 Mn 0.56 Co 0.07 O 2 (LNMCO), aiming to boost the interfacial Li + transport process in LIBs. The results demonstrate that the 2 wt% LiTaO 3 -LNMCO electrode exhibits a stable capacity of 209.2 mAh g −1 at 0.1 C after 200 cycles and 172.4 mAh g −1 at 3 C. Further investigation reveals that such superior electrochemical performances of the LiTaO 3 modified electrode results from the additional driving force from the piezoelectric LiTaO 3 layer in promoting Li + diffusion at the interface, as well as the stabilized bulk structure of LNMCO. The supplemented LiTaO 3 layer on the LNMCO surface herein, sheds new light on the development of better Li-rich cathodes toward high energy density applications.
研究领域:
材料科学
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电化学
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能源存储
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功能材料
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固态离子学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Tianshuai Lyu,Pieter Dorenbos,Zhanhua Wei
Developing X-ray charged dosimeters with excellent charge carrier storage capacity and stability is challenging. Such energy storage dosimeters have fascinating use in developing novel applications, for instance, in radiation detection, advanced multimode anti-counterfeiting, and flexible X-ray imaging of curved objects. Herein, novel LiTaO 3 :Ln 3+ ,Eu 3+ (Ln = Tb or Pr) perovskite dosimeters are reported by combining the vacuum referred binding energy (VRBE) diagram of LiTaO 3 and the optimization of dopant’s concentration and compound synthesis condition. Based on the VRBE diagram prediction, charge carrier capturing and de-trapping processes in Eu 3+ and/or Ln 3+ (Ln = Tb or Pr) doped LiTaO 3 will be studied to unravel the role of Eu 3+ as a good electron trapping centre and to discover a record storage phosphor. The ratios of the thermoluminescence intensity of the optimized LiTaO 3 :0.005Tb 3+ ,0.001Eu 3+ to that of the state-of-the-art BaFBr(I):Eu 2+ , Al 2 O 3 :C, or NaLuF 4 :Tb 3+ are 5.2, 8.8, or 2.8, respectively. The charge carriers can be stored more than 1000 h in LiTaO 3 :0.005Tb 3+ ,0.001Eu 3+ . Proof-of-concept anti-counterfeiting application will be demonstrated by combining the colour-tailorable photoluminescence, afterglow, thermally, or optically stimulated luminescence in LiTaO 3 :0.005Tb 3+ ,xEu 3+ and LiTaO 3 :0.005Pr 3+ ,0.001Eu 3+ . Multimode anti-counterfeiting application will be proposed by combining a high absolute X-ray scintillation light yield of 19000 ± 1800 ph/MeV of LiTaO 3 :0.005Tb 3+ ,0.001Eu 3+ . Proof-of-concept flexible X-ray imaging application will be demonstrated by using the optimized LiTaO 3 :0.005Tb 3+ , 0.001Eu 3+ dispersed in a silicone gel film.
研究领域:
材料科学
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辐射探测技术
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光学材料
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DOI
高影响因子
Laser & Photonics Reviews
·
2025
·
IF 10
Xinru Huang,Hang Yang,Yi Wei,Haonan Ju,Wei Wang,Dong Tu,Guogang Li
Mechanical quenching (MQ) represents a distinctive mechano-optical response, in which the afterglow intensity is quenched under the applied mechanical stress. Compared with mechanoluminescent (ML) materials, the research on physical mechanism and sensing application of MQ materials is still insufficient. Moreover, existing mechano-optical materials typically respond only to dynamic stress, while ML materials are unable to exhibit luminescence under static stress, restricting their utility in stress-sensing applications. In this work, the MQ characteristics of CaZnOS:Cu + are systematically studied, which displays a linear mechano-optical response to dynamic and static stress. Furthermore, this material shows a sensitive response to micro-strain in stretching tests. Therefore, a novel mechanical switch device is introduced combined with CaZnOS:Cu + and a ML material LiTaO 3 :Tb 3+ . By comparing the alteration in luminescence intensity during stretching, different stages of stress are digitally encoded, achieving both dynamic and static stress sensing and effectively differentiating the information output. These findings provide a new approach for multi-mode dynamic and static stress sensing by utilizing mechano-optical materials and pave a significant avenue for the information integration of mechano-optical materials in the field of stress sensing.
研究领域:
材料科学
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光学
·
力学
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Hengli Liu,Xinxin Yang,Xiaofang Zhao,Wei Liu,Huan Li,Lin Li,Yusong Du,Guihua Li,Jin Han,Shuai Cheng,Guanghui Rao,Jingtai Zhao
The elasticoluminescence (EML) performance is significantly influenced by lattice defects and piezoelectric properties, which can be effectively modulated through the incorporation of a certain amount of ferroelectric materials. In this study, a series of novel ferroelectric phosphors Li 0.97 Nb 1- x Ta x O 3 : 0.01Pr 3+ were synthesized via a conventional solid-state reaction method under ambient atmospheric conditions. The defects, piezoelectric properties, and their relationship with optical performance were systematically investigated using X-ray diffraction, X-ray photoelectron spectroscopy, photoluminescence, diffuse reflectance spectroscopy, high-resolution transmission electron microscopy, and dielectric measurements. The incorporation of Ta 5+ ions resulted in a reduction in ferroelectric domain size and an enhancement in dielectric properties, thereby improving piezoelectric performance. Moreover, the introduction of Ta 5+ ions induced the formation of new impurity defects, resulting in an increased concentration of defect complexes. Both the enhanced piezoelectric response and the higher density of defect complexes contribute to the improvement of mechanoluminescence performance. This study can present a viable strategy for the development of advanced mechanoluminescent materials.
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高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Xin Yang,Shaopeng Lin,Decai Ma,Siwei Long,Yunzhong Zhu,Huashan Li,Biao Wang
We synthesized LiTaO 3 :Er 3+ phosphors by molten salt method, and systematically investigated their phase structure, micro-morphology, up-conversion luminescence, and optical temperature sensing properties. The up-conversion luminescence was demonstrated to arise from two near-infrared photon absorption process, which can be optimized by tuning Er 3+ dopant concentration. The corresponding mechanism was proposed based on the transitions between dopant states as illustrated in an energy level diagram. The optical temperature sensing properties were explored by utilizing the fluorescence intensity ratio method. Notably, a wide operation scope ranging from 100 to 500 K was obtained, along with a relatively large energy gap (Δ E = 698 cm −1 ) and a high absolute sensitivity ( S a = 3.34 × 10 −3 K −1 at 492 K). The impressive properties of LiTaO 3 :Er 3+ phosphors in combination with the incomparable multifunctional feature of host material reveal their potential for developing integratable up-conversion optical thermometry.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
CHEMISTRY-A EUROPEAN JOURNAL
·
2025
·Vol. 31
·期 24
·e202500249
·
IF 3.7
Baoqing Sun,Ting Li,Congliang Shen,Mingyue Zhang,Zhaoyu Guang
Graphical Tb 3+ , Sm 3+ mono-/co- doped LiTaO 3 phosphors are prepared by high-temperature solid-state reaction. Emission color of LiTaO 3 : Tb 3+ , Sm 3+ shifts from green to yellow as Sm 3 ⁺ concentration increases due to energy transfer from Tb 3+ to Sm 3+ . Time-resolved color evolution from green to orange is achieved by combining the trap-assisted afterglow of Tb 3+ and stable photoluminescence of Sm 3+ . Currently, static fluorescent anti-counterfeiting technology struggles to cope with the increasingly sophisticated counterfeiting techniques, making the dynamic multimode regulation scheme an urgent necessity. Herein, Tb 3+ , Sm 3+ mono-/co-doped LiTaO 3 (LTO) phosphors are prepared by high-temperature solid-state method. Under 254 nm excitation, the emission chromaticity of LTO: Tb 3+ , Sm 3+ is modulated from green to yellow by increasing Sm 3+ content due to Tb 3+ → Sm 3+ energy transfer. The diverging luminescence thermal stability of LTO: Tb 3+ and LTO: Sm 3+ is uncovered, which is governed by their distinct vacuum-referenced binding energy (VRBE) levels and charge compensation mechanisms. Based on the time-domain difference between the trap-assisted afterglow of Tb 3+ and the photoluminescence of Sm 3+ , a dynamic anti-counterfeiting pattern that changes from green to orange over time is designed. This work provides a novel material design strategy for time-resolved color signatures and multi-modal dynamic optical encryption.
研究领域:
材料科学
·
光学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Hanwei Zhang,Xiaoyun Zhang,Tianyi Zeng,Aichun Dou,Panpan Zhang,Mingru Su,Yu Zhou,Yunjian Liu
The application of Ni-rich ternary cathode materials is restricted by the irreversible phase transition and interfacial side reactions during long-term cycling. Herein, a LiTaO 3 coating and Ta 5+ doping strategy are simultaneously achieved by a simple solid-phase synthesis. The surface side-reaction and undesired phase transition of LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA) are effectively restrained by this approach, which utilizes residual lithium to afford the coating. The NCA-LTO 3 (The modified NCA with a LiTaO 3 coating content of 3 wt%) delivers a high reversible capacity of 168.04 at 5 C (140.56 mAh g −1 for NCA), revealing the enhanced rate capability. More importantly, the cycling life could be greatly maintained after 200 cycles with a significant capacity retention of 94.1% (61.2% for NCA) at 1 C. Mechanism analysis indicates that such improvement is ascribed to the coating of conductor LiTaO 3 and doping Ta 5+ greatly promoting the Li-ion diffusion and stabilizing the interface of NCA. The study proposes a highly convenient strategy for interfacial optimization of cathode materials toward assisting the large-scale production of high-performance NCA.
研究领域:
材料科学
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电化学
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能源存储
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固态化学
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电池技术
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DOI
高影响因子
Inorganic Chemistry Frontiers
·
2023
·Vol. 10
·期 16
·4869-4880
·
IF 7
Ruiting Zhang,Yahong Jin,Yanmei Li,Haoyi Wu,Yihua Hu
Inorganic photochromic materials hold great scientific and technological promise in the field of optical information storage due to their numerous advantages, including an extended color change duration, exceptional fatigue resistance, and robust thermal stability. However, their practical application has been hindered by relatively slow coloring and bleaching rates. In this study, we present a P-type photochromic perovskite material, LiTaO3:Bi3+/Sm3+, with an ultra-fast optical response. LiTaO3:Bi3+/Sm3+ exhibits a rapid coloring time of approximately 25 seconds and an ultra-fast bleaching time of approximately 1 second, achieved through alternating 254 nm and 365 nm light irradiation. Notably, the photobleaching rate of LiTaO3:Bi3+/Sm3+ is currently the fastest among all reported inorganic photochromic materials. The prepared LiTaO3:Bi3+/Sm3+ material exhibits a maximum color change contrast of 26.49% and excellent fatigue resistance. The codopant Bi3+ plays a critical role in creating traps within the host lattice, which greatly enhances photochromism contrast and enables efficient long afterglow luminescence. These dual properties make the material suitable for dual-mode optical information storage in both bright and dark fields. Finally, the excellent optical properties of LiTaO3:Bi3+/Sm3+ are demonstrated in its application for erasable optical information storage vividly.
研究领域:
材料科学
·
光学工程
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
·
2026
·
IF 4.7
Siyu Liao,Dongyang Jiang,Yuxian Duan,Zhi Li,Weida Chen,Zeli Deng,Guanghong Liu,Qianxu Ye,Shijie Sun,Liexing Zhou,Jinming Cai,Hongyou Li,Guo Chen
Lithium tantalate (LiTaO 3 ) powder was synthesized via a simple and efficient method employing LiF and Ta 2 O 5 as raw materials, making its inaugural application in the piezoelectric catalytic degradation of organic dye. Subjected to ultrasonic vibration, LiTaO 3 powder degraded 100% Rhodamine B dye within a 16-min period, demonstrating the reaction rate constants ( k ) of 0.28012 min −1 . Even after six catalytic cycles, the degradation rate remained 94%. Mechanistic investigations revealed that hydroxyl radicals (•OH) and superoxide radicals (•O 2 − ) predominantly drive the piezoelectric catalytic degradation of RhB. This research introduces innovative strategies and methodologies for synthesizing and utilizing new piezoelectric catalysts, thus making significant contributions to the development of efficient and sustainable technologies for environmental remediation.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Jiajia Tan,Jianfeng Yan,Xu Feng,Qi Zhang,Xingzhong Wu,Lei Yuan,Qiang Fu,Shifeng Zhou
Transparent glass composites with high crystallinity (HC-TGC) exhibit significant potential for applications in nonlinear optics, solid-state laser systems, and optical information processing technologies. However, achieving HC-TGC is often hindered by the substantial refractive index mismatch between functional crystals and the glass matrix. To address this challenge, we propose an in situ refractive index buffering strategy. Using LiTaO 3 as a prototype TGC, we controlled the precipitation of a secondary LiAlSi 2 O 6 crystalline phase, which was found to markedly enhance optical transparency. Both the theoretical and experimental analyses reveal that this secondary phase acts as a “refractive index buffer”, effectively reducing the refractive index contrast (Δn) between the LiTaO 3 nanocrystals and the surrounding glass matrix, thereby minimizing light scattering. As a result, we successfully obtained LiTaO 3 TGC with high crystallinity (>85 wt.%) and excellent optical transparency (>70% at 1.5 mm). The composite demonstrates a robust second-harmonic generation (SHG) response, as well as a unique transverse second-harmonic generation (TSHG) effect. Furthermore, utilizing this HC-TGC, we developed a TSHG optical setup and demonstrated its application in monitoring ultrashort optical pulses. This work introduces a generalizable design strategy for creating highly transparent, functional HC-TGCs, paving the way for advancements in integrated nonlinear photonics.
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高影响因子
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