Optical Materials Express
·
2018
·Vol. 8
·期 6
·1425-1434
·
IF 2.566
Cong Pan,Jun-Cheng Zhang,Min Zhang,Xu Yan,Hong-Di Zhang,Yun-Ze Long,Xin-Yuan Sun,Hai-Tao Jiang
Isomorphic materials tend to exhibit differentiated performance due to the small differences between the constituent atoms and the crystal structures. Inspired by the isomorphic strategy, herein we developed a novel trap-controlled mechanoluminescent (TC-ML) material, Pr3+-activated Sr2Nb2O7, that shows mechanoluminescence (ML) under the mechanical actions of compression and friction. Compared to the isomorphic Ca2Nb2O7:Pr3+ which requires a long-time delay to achieve high-contrast ML due to the strong long-lasting afterglow, Sr2Nb2O7:Pr3+ enables the obtaining of high-contrast ML in a short-time delay because of the weak short-lasting afterglow, which greatly simplifies the imaging process to facilitate the further application of ML. The investigations of structural and optical characteristics between Sr2Nb2O7:Pr3+ and Ca2Nb2O7:Pr3+ reveal that the unique ML of Sr2Nb2O7:Pr3+ should result from its lower trap concentration and shallower trap depth relative to Ca2Nb2O7:Pr3+. Our results are expected to deepen our understanding on the behavioral diversity of isomorphic phosphors and thereby broaden the horizon of designing and regulating TC-ML materials.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
OPTICS LETTERS
·
2022
·Vol. 47
·期 23
·6293-6296
·
IF 3.56
Chongyang Cai,Leipeng Li,Pei Li,Tao Li,Dengfeng Peng,Yanmin Yang,Yanmin Yang
Mechanoluminescent materials have attracted considerable attention over the past two decades, owing to the ability to convert external mechanical stimuli into useful photons. Here we present a new, to the best of our knowledge, type of mechanoluminescent material, i.e., MgF2:Tb3+. In addition to the demonstration of traditional applications, such as stress sensing, we show the possibility of ratiometric thermometry using this mechanoluminescent material. Under stimulation of an external force, rather than the conventional photoexcitation, the luminescence ratio of 5D3→7F6 to 5D4→7F5 emission lines of Tb3+ is confirmed to be a good indicator of temperature. Our work not only expands the family of mechanoluminescent materials, but also provides a new and energy-saving route for temperature sensing.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2023
·Vol. 11
·期 22
·2300911
·
IF 9
Binli Xiao,Puxian Xiong,Sheng Wu,Dongliang Jiang,Kang Chen,Yao Xiao,Peishan Shao,Yinzhen Wang
Mechanical luminescence (ML) is the conversion of mechanical energy into light energy when a material is subjected to a force. It is challenging to develop ML materials with tunable luminescent properties by single ion doping, which have broad application prospects in the fields of stress sensing and dynamic signature anticounterfeiting. In this study, a Pr 3+ doped Sr 2 Ga 2 GeO 7 tunable ML material is reported. Due to the traps resulting from unequal substitution of Pr 3+ –Sr 2+ in [SrO 6 ] heptahedra, the deep/shallow traps redistribution occurs towards a multicolor ML from red to green. In addition, even after continuous friction sliding force (15 N), the ML intensities can be recovered after ultraviolet pre-irradiation, indicating that Sr 2 Ga 2 GeO 7 : Pr 3+ has excellent ML emission stability. Based on thermoluminescence analysis, potential PersL and ML mechanisms are further elaborated by a lattice engineering (trap regulation) strategy. In all, the development of single-ion doped multicolor ML materials may have crucial research value and show a variety of potential applications in the fields of anticounterfeiting and information encryption.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2021
·
IF 5.316
Xin Li,Xusheng Wang,Rui Hu,Yanxia Li,Xi Yao
We report a novel mechanoluminescent phosphor Li 1−x Ca x Si x Ta 1−x O 3 :0.01Pr 3+ (x = 0–0.04). The crystal structure, photoluminescence (PL), optical diffuse reflectance spectra, afterglow (AG), fluorescence decay curves, and mechanoluminescence (ML) properties were investigated. To clarify the defect types and the mechanoluminescence mechanisms, an X-ray photoelectron spectroscopy (XPS) and thermoluminescence curve (TL) were measured. The dopants Ca 2+ and Si 4+ ions occupied the Li+ and Ta 5+ sites, respectively. An optimal sample Li 0.98 Ca 0.02 Si 0.02 Ta 0.98 O 3 :Pr 3+ was obtained with great enhancement in mechanoluminescence intensity, higher than that of non-doped sample LiTaO 3 :Pr 3+ by 262%. And the compression threshold, over which the ML intensity could not maintain the linear increase, has also been greatly improved. Furthermore, the stable output of Tribo-L was achieved, which was visible to the naked eye. A probable mechanism was proposed to illustrate the mechanoluminescent process in Li1-xCaxSixTa1-xO3:0.01Pr3 + (x = 0–0.04). The study indicates that adjusting trap distribution by substituting host ions may be a novel way to develop high-quality mechanoluminescence.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 27
·2214497
·
IF 19
Zhichao Liu,Xue Yu,Qingpeng Peng,Xiaodie Zhu,Jianqiang Xiao,Jiangtao Xu,Shouxiang Jiang,Jianbei Qiu,Xuhui Xu
Mechanoluminescence (ML) materials with long-wavelength emission bands are essential for future in vivo bioimaging, non-destructive testing of solids, etc. The lack of a defined mechanism, however, prevents the application of near infrared ML materials above 650 nm in several new fields. Here, the addition of Ga 3+ ions to Y 3 Al 5 O 12 : Cr 3+ manipulates matrix microstructure evolution, boosting near-infrared (NIR) zero-phonon line (ZPL) stress optical output of the Cr 3+ ion at 688 nm. The key factor changing the crystal field intensity D q /B due to the addition of Ga 3+ ions is what causes the luminescence amplification of ZPL. The ML fabricated by composite polydimethylsiloxane and Y 3 Al 4 GaO 12 : Cr 3+ (YAGG: Cr 3+ ) may penetrate chicken feet epidermal tissue and 4 mm pork tissue thanks to the strong NIR ZPL emission of YAGG: Cr 3+ phosphor. This discovery of enhancing near-infrared ZPL intensity by solid solution provides us with a new technique for optimizing NIR ML materials, as well as a new prospect for NIR ML materials in biological applications.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2024
·
IF 5.2
Chunqing Fu,Wei Meng,Xiaoyan Fu,Shuya Wang,Wenzhi Sun,Hongwu Zhang
X-ray irradiated La 2 Ti 2 O 7 :Pr 3+ was found to show long-time sustainable mechanoluminescence (ML), which can realize the high sensitivity and real time detection of stress burst for more than 72 h. Under the excitation of X-ray, La 2 Ti 2 O 7 :Pr 3+ shows red ML emissions located at 610, 624 and 638 nm, which are similar to the afterglow emission spectrum and can be ascribed to 1 D 2 - 3 H 4 , 3 P 0 - 3 H 4 and 3 P 0 - 3 H 2 of Pr 3+ . And the linear increases of compressive load can induce the linear increases of ML intensity of the sample, indicating that the X-ray induced ML emission can be utilized to accurately detect the stress applied on the object. Furthermore, X-ray irradiated La 2 Ti 2 O 7 :Pr 3+ possesses excellent stability and the repeatability of ML emission and the ML signals can keep stable even 50 load cycles after 1 h decay. The thermoluminescence results suggest that abundant electrons are trapped in shallow and deep answered for stable ML emission. More importantly, the deeply trapped electrons induced ML emissions from X-ray irradiated La 2 Ti 2 O 7 :Pr 3+ can be utilized to detect the stress bursts for a long time. When the sample is recharged by 5 min X-ray irradiation once, within 24 h decay, the 1500 N burst among many 1000 N cycles can be clearly detected, and the signal to noise ratio (S/N) reaches 1.32 and 1.26 after 12 and 24 h decay, respectively. And even after 72 h decay, the S/N of 2500 N still arrives at 1.23 and that of 4000 N reaches 1.97, indicative of long-time high sensitivity detection of abnormal stress. All these results suggest that the X-ray-irradiated La 1.97 Ti 2 O 7 :0.03Pr 3+ /resin sample can realize the high sensitivity and real time detection of stress burst for more than 72 h, which thus possesses great potential application in early warning of the emergency disasters such as bridge fracture, tunnel collapse and so on.
研究领域:
材料科学
·
光学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 29
·1-12
·
IF 2.8
Zhang Zeqing,Liu Wei,Li Lin,Li Huan,Zhang Zhijun,Cheng Shuai,Rao Guanghui,Zhao Jingtai
In recent years, materials exhibiting multimodal luminescence properties from deep red to near-infrared (NIR) wavelengths have been a focal point of research, particularly in the exploration of applications within the realms of stress sensing and dynamic signature anti-counterfeiting. A pyroxene-type layered crystal structure compound, CaMgGe 2 O 6 : Mn 2+ , has been reported as a mechanoluminescent (ML) material. Upon incorporation into the host, Mn 2+ ions preferentially substitute for Mg 2+ ions, emitting deep red to near-infrared light (600–800 nm) within this six-coordinated [MgO 6 ] octahedral environment. The congruence of photoluminescence and ML spectra indicates that both types of luminescence originate from the same emissive center. The doping of Mn 2+ ions introduces impurity band, effectively reducing the optical band gap, as evidenced by ultraviolet diffuse reflectance measurements. Thermoluminescence results reveal three defect centers within the phosphor, whose concentrations decrease with Mn 2+ doping, correlating with a reduction in ML intensity. The ML mechanism of the phosphor is elucidated through the analysis of local piezoelectric properties within the crystal. Overall, this study may pave new pathways for the development of efficient near-infrared mechanoluminescent materials, showcasing potential applications within the biological domain.
研究领域:
材料科学
·
光学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Advanced Optical Materials
·
2025
·Vol. 13
·期 14
·2403472
·
IF 7.2
Hongzhen Liu,Yuhe Shao,Chao Dou,Jing Zhao,Zhen Song,Quanlin Liu
Mechanoluminescence (ML) materials can convert mechanical energy into photoelectrons and have significant potential for applications in intelligent sensing, self-driven luminescent displays, and human-computer interaction. Among the numerous ML systems, Mn 2+ -doped wurtzite-based phosphors have become a prominent ML family. However, their ML emissions are typically confined to visible light, which substantially limits their utility in fields such as biomechanics and bioimaging. Here, it is demonstrated that the photoluminescence (PL) and ML emission of CaZnOS:Mn 2+ can be tuned from the red to near-infrared light (peaked at 770 nm) by regulating the Mn 2+ ion concentration. The electronic paramagnetic resonance, PL lifetime, and various spectra reveal that the near-infrared emission originates from the enhanced magnetic interaction of Mn 2+ pairs due to intrinsic defects. The heavy Mn 2+ -doped CaZnOS elastomer with near-infrared ML emission exhibits distinct advantages over low Mn 2+ -doped CaZnOS with only red emission in the field of biomechanical imaging. This work achieves near-infrared emission in CaZnOS phosphors singly doped with Mn 2+ ions for the first time, providing a perspective for spectra broadening of Mn 2+ ions-doped phosphors.
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
ACTA MATERIALIA
·
2018
·
IF 6.036
Jun-Cheng Zhang,Xin-Hua Fan,Xu Yan,Feng Xia,Weijin Kong,Yun-Ze Long,Xusheng Wang
Trap-controlled mechanoluminescence (ML) enables the direct observation of stress concentration of load-bearing objects through imaging the ML distribution, showing numerous prospects in stress detection, bio-imaging and optical displays. However, the applications of trap-controlled ML materials universally require long-time delay to fade the noise of symbiotic persistent luminescence (PersL) in order to achieve high-contrast ML images. In view of the difficulty to solve the PersL problem through individually eliminating the PersL traps, herein we propose a novel strategy of sacrificing trap density which decreases PersL and ML traps as a whole. By employing Sr 2+ substitution to decrease the trap density of Ca 2 Nb 2 O 7 :Pr 3+ , we identify a novel composition of (Ca 0.5 Sr 0.5 ) 2 Nb 2 O 7 :Pr 3+ displaying short-delay and high-contrast ML images, and evaluate its practicability through a 2-dimensional in-situ imaging experiment of dynamic stress distribution. The underlying mechanism is ascribed to the greater decrease ratio of PersL intensity than ML intensity as a result of the larger detrapping rate of traps due to stress (leading to ML) than that due to thermal energy (PersL). Furthermore, multi-spectral investigations of (Ca,Sr) 2 Nb 2 O 7 :Pr 3+ system reveal a distinctive electron transition process co-regulated by trap levels, charge transfer state and crystal field . The proposed strategy and the associated phosphors are expected to initiate the reconstruction of PersL-type ML materials and bring important implications for real-world stress imaging.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 44
·16670-16678
·
IF 8.067
Peishan Shao,Puxian Xiong,Yao Xiao,Qianyi Chen,Yongsheng Sun,Na Yan,Dongdan Chen,Zhongmin Yang
Mechanoluminescent (ML) materials, which can emit light under external mechanical stimuli, have attracted much interest in diverse applications such as stress sensing, anti-counterfeiting and 3D signatures. However, ML materials located within the ultraviolet (UV) spectral range are still limited. In this study, a series of LixY0.995GeO4:0.005Bi3+ (0.898 ≤ x ≤ 1.003) samples are synthesized by a high temperature solid-state reaction method. The crystal structure, ML, persistent luminescence (PersL) and photoluminescence (PL) are systematically studied. The excellent UVA PersL of LiYGeO4:Bi3+ can be ascribed to the existence of abundant trap sites created by the intentional loss of Li+ ions, which can improve the ML properties of the phosphors. This excellent material can make up for the deficiency of PersL materials in the UVA region (315–450 nm), and it may greatly expand the application of ML materials in the biomedical, energy and catalysis fields.
研究领域:
材料科学
·
光学
·
生物医学工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Yao Xiao,Puxian Xiong,Shuai Zhang,Kang Chen,Shuhang Tian,Yongsheng Sun,Peishan Shao,Kexin Qin,Mikhail G. Brik,Shi Ye,Dongdan Chen,Zhongmin Yang
Developing deep-red to near infrared (NIR) materials with multi-mode luminescence is challenging, which has promising utilization in various applications such as stress sensing and dynamic signature anti-counterfeiting. Different to the mainstream non-centrosymmetric mechanoluminescence (ML), a centrosymmetric perovskite compound (MgGeO 3 : Mn 2+ ) ML material is reported. Deep-red to NIR light (600–800 nm) from Mn 2+ ion is confirmed, which is attributed to the strong crystal field within the [MgO 6 ] polyhedron. The stiffness tetrahedral units and large defect accommodating space within the host are favorable for both ML and persistent luminescence (PersL). Mn 2+ ion is the only luminescent center, which is confirmed by spectral characterizations. Based on diffuse reflectance spectra, thermoluminescence analysis and density functional theory calculations, the inherent relationship between PersL, ML and PL is further clarified in detail. Due to the formation of Mn Mg defects, shallow trap significantly become shallower after adding Mn 2+ ions. This study reports a Mn 2+ -doped deep-red to NIR ML phosphor, and further describes the PersL and ML mechanisms via defect engineering regulation. In general, this study may also open up a new approach for the development of efficient NIR ML materials, and show various potential applications such as in anti-counterfeiting and information encryption fields.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
LUMINESCENCE
·
2024
·Vol. 39
·期 5
·e4754
·
IF 3.2
Hongbin An,Haonan Ju,Zhiliang Ren,Hang Yang,Xinru Huang,Dong Tu
Near-infrared mechanoluminescence is a phenomenon that produces high penetrating near-infrared light under external stimulation. Near-infrared light coincides with the biological window, lower optical loss, and the fact that the mechanoluminescence material is a medium that converts mechanical energy into light energy. The near-infrared mechanoluminescence material has potential application prospects in the fields of biological imaging, medical diagnosis, and monitoring of building materials. In this article, we report on a perovskite-type Sr 3 Sn 2 O 7 :Nd 3+ near-infrared mechanoluminescence material, and its peaks locate in the first near-infrared window (800–1000 nm) and the second near-infrared window (1080, 1350 nm), respectively. Under the condition of pre-sintering with Li 2 CO 3 as flux, the best sintering conditions are obtained, and the luminescence of material is in perfect agreement with the applied mechanical stress. In addition, a near-infrared mechanoluminescence sensor is proposed to solve the problem of building damage and timely maintenance.
研究领域:
材料科学
·
生物医学工程
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）