MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
C. Wang,X.Z. Zheng,L. Yue,P.J. Xia,M. Xu,W.B. Dai
The exploration of stable/efficient phosphor for n -UV chip pumped white light-emitting diodes ( w LEDs) remains an arduous task. Herein, a novel series of color tunable Eu 2+ /Tb 3+ /Sm 3+ tridoped Sc-based cyclosilicate phosphors (KBaScSi 3 O 9 : Eu 2+ /Tb 3+ /Sm 3+ ) have successfully designed and obtained via facile solid-state reaction based on comprehensive consideration of rigidly structural network of host, weak electron-phonon coupling strength and spectral adjustability of codopants via energy transfer (ET). The crystallographic occupancies of Eu, Tb and Sm primary in Ba/K, Ba and Ba sites in the monoclinic host, respectively were determined on the basis of the Rietveld refinements and crystal chemistry rules. The photoluminescence (PL) properties were systematically investigated in conjunction with structural analyses, implying that the ‘warm’ white light with excellent thermal stability is stemmed from combination of optimized blue (Eu 2+ ), green (Tb 3+ ) and red (Sm 3+ ) emissions via Eu → Tb → Sm ET strategy. Interestingly, Tb ions play both roles of green light luminescent center and ET bridge to achieve cascade ET for connecting Eu/Sm ion pairs because of the adverse metal-metal charge transfer (MMCT) effect (Eu 2+ + Sm 3+ → Eu 3+ + Sm 2+ ). Furthermore, the phosphor-converted w LEDs (pc- w LEDs), by encapsulating the optimal KBS: 4 %Eu/4 %Tb/6 %Sm with commercial n -UV LED chip, show high thermal stability with satisfactory electroluminescence (EL) performances. These results indicate the KBS: Eu/Tb/Sm phosphors are potential candidates for application in high power n -UV pumped pc- w LEDs.
研究领域:
材料科学
·
发光材料
·
固态照明
·
无机化学
·
光电子学
✓ 已验证
DOI
高影响因子
BULLETIN OF MATERIALS SCIENCE
·
2016
·Vol. 39
·期 1
·187-193
·
IF 0.895
CAO RENPING,QIN ZHENGDONG,JIANG SHENHUA,LIANG AIHUI,LUO ZHIYANG,YU XIAOGUANG
A series of CaNb 2 O 6 : x Sm 3+ (0 ≤
x
≤ 10 mol%) and CaNb 2 O 6 : Sm 3+ , Na + /B 3+ phosphors were synthesized by the solid-state reaction method in air. Their crystal structures and luminescence properties were investigated and analysed, respectively. Host CaNb 2 O 6 emitted blue light with excitation 270 nm. CaNb 2 O 6 : x Sm 3+ phosphors showed a systematically varied hue from blue to white by changing Sm 3+ ion concentration from 0 to 10 mol% with excitation of 270 nm and their chromaticity coordinates were the regions from (0.1665, 0.1767) to (0.2484, 0.2260). Luminescence properties of CaNb 2 O 6 : Sm 3+ phosphor were tuned and improved significantly by codoping B 3+ or Na + ions. Energy transfer between Nb \(_{\mathbf {2}}\textit {O}_{\mathbf {6}}^{\boldsymbol {2-}}\) group and Sm 3+ ion was observed and analysed via luminescence properties. The luminous mechanism was explained by energy level scheme and energy transfer process in CaNb 2 O 6 : Sm 3+ phosphor. The strong excitation band peaking at ∼ 407 nm indicated that the CaNb 2 O 6 : Sm 3+ , Na + /B 3+ phosphor has a potential application in white light-emitting diodes based on near-UV LED chip.
研究领域:
材料科学
·
无机化学
·
发光材料
·
固体物理
·
光电子学
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2024
·
IF 5.3
Chenglin Gong,Lin Lin,Yingzhen Wu,Yanan Zhang,Zhuohong Feng,Zhezhe Wang,Yantang Huang,Zhiqiang Zheng
In this research, double perovskite quantum dots Cs 2 AgInCl 6 : Tb 3+ /Sm 3+ /Bi 3+ are synthesized employing a high-temperature thermal injection method. The temperature-dependent emission spectra and the fluorescence decay curves of samples show the quantum dots can be applied to dual-mode temperature sensing employing fluorescence intensity ratio technique (between 656 nm (Sm 3+ ) and 549 nm (Tb 3+ )) and fluorescence lifetime thermometry (549 nm (Tb 3+ )), achieving maximal relative sensitivities of 3.24%/K (351 K) and 0.68%/K (373 K), respectively. This study offers valuable insights into the temperature sensing capabilities of these quantum dots, which shows that these quantum dots are promising high-sensitivity dual-mode temperature sensing materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS A-PHYSICAL
·
2022
·
IF 4.291
Bingjie Han,Jiabao Zhu,Chu Chu,Xinghua Yang,Yuhan Wang,Kairan Li,Yuting Hou,Kang Li,Nigel Copner,Pingping Teng
Optical temperature sensing and plant growth lighting multifunctional applications can be realized by red luminescent materials. In this paper, novel Sm 3+ and Sm 3+ -Mn 4+ activated Sr 2 GdTaO 6 (SGTO) red phosphors for plant growth and optical temperature sensing were comprehensively analyzed. The phase, luminescence property and thermal stability of the material were tested. For PL performance, SGTO:0.075Sm 3+ exhibits the maximum emission intensity in the range (560–670 nm). The emission range of SGTO:0.075Sm 3+ after introducing Mn 4+ is mainly dark red light emission in the range from 630 to 750 nm, and the optimum doping concentration of Mn 4+ is determined to be 0.3 %. The emission band of SGTO:0.075Sm 3+ and SGTO:0.075Sm 3+ , 0.003Mn 4+ matches the absorption band of the plants. For optical temperature sensing properties, the relative sensitivity ( S r ) and absolute sensitivity ( S a ) of SGTO:0.075Sm 3+ , 0.003Mn 4+ are 2.94 K −1 (298 K) and 0.635 K −1 (573 K), respectively. The results indicate that Sm 3+ -Mn 4+ activated SGTO red phosphor is a luminescent material with potential application in plant growth and optical temperature sensing field.
研究领域:
材料科学
·
植物学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Ze Fang,Xue Tian,Fengji Zheng,Xiaodong Jiang,Wanneng Ye,Yalin Qin,Xiaoxiong Wang,Yongcheng Zhang
Piezoelectric materials are widely used in electromechanical energy conversion, such as in sensors, transducers, and self-powered materials. In this paper, the influence of the Sm doping content on the microstructure and ferroelectric , piezoelectric , dielectric , and field-induced strain properties of 0.70Pb(Mg 1/3 Nb 2/3 )O 3 -0.30PbTiO 3 (PMN-PT) ceramics was investigated. Sm-doped PMN-PT ceramics with both high piezoelectric properties ( d 33 ∼1406 pC/N) and a large electromechanical coupling coefficient ( k p ∼0.69) were synthesized. Based on their piezoelectric effect, a maximum output voltage of 31 V was achieved under external forces. The output voltages showed satisfactory stability, repeatability, and sensitivity under periodic external forces; hence, Sm-doped PMN-PT piezoelectric ceramics are potential candidates for energy conversion and signal monitoring.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Journal of Science-Advanced Materials and Devices
·
2026
·Vol. 11
·期 3
·101207
·
IF 6.9
Lu Yang,Junjie Li,Jianzi Xu,Kun Zhang,Chunxin Ma,Wenjuan Wu,Xing Zhang
Lead-free piezoelectric ceramics with high Curie temperature are urgently demanded to replace toxic lead-based materials for environmental sustainability, among which BiFeO 3 –BaTiO 3 (BF-BT) systems show promising potential. Although chemical substitution is widely adopted to modulate properties, achieving balanced electromechanical performance in BF-BT ceramic remains challenging due to the complexity of A-site cations (Bi 3+ and Ba 2+ ) with different valence states and ionic radii. Herein, we systematically investigated site-selective Sm 3+ substitution effects on structure and properties of BF-BT ceramics. Bi-site substitution promoted grain growth and reduced leakage current via suppressed bismuth volatilization, while Ba-site substitution refined grains but severely disrupted ferroelectric ordering due to charge imbalance. Furthermore, 2/3Bi 0.995 Sm 0.005 FeO 3 -1/3BaTiO 3 (BF-BT-Bi-Sm0.005) achieved optimized comprehensive performance, exhibiting a piezoelectric coefficient of d 33 = 87 pC/N, mechanical quality factor of Q m = 101.5, Curie temperature of T m = 394 °C, and low leakage current density. These results demonstrate that low-level Bi-site substitution effectively coordinates defect chemistry, microstructure, and domain engineering to achieve superior electromechanical coupling, providing a rational design strategy for high-performance lead-free ceramics suitable for high-temperature sensing applications.
✓ 已验证
DOI
高影响因子
Crystals
·
2023
·Vol. 13
·期 7
·
IF 2.7
Qingliang Xu,Wanqing Qian,Raz Muhammad,Xinhua Chen,Xueqing Yu,Kaixin Song
The optical temperature sensor utilizing the fluorescence intensity ratio (FIR) has garnered significant attention in the past few years due to its rapid response, robust anti-interference capability, remote control feature, and other advantages. In this study, the high-temperature solid-phase approach was used to fabricate a variety of double perovskite-structured La2MgSnO6: Bi3+, Sm3+(LMS: Bi3+, Sm3+) phosphors. The Rietveld refinement data of XRD and the Gaussian fitting of the emission peak of LMS: 0.02Bi3+phosphor indicated Bi3+occupies three lattice sites. The calculation and analysis of average lifetime and energy transfer efficiency substantiated the presence of energy transfer from Bi3+to Sm3+, with a transfer efficiency of up to 59.07%. The emission intensity of LMS: 0.02Bi3+, 0.05Sm3+at 403 K maintains 50.2% at the condition of room temperature. The FIR fitting and calculation demonstrated that LMS: 0.02Bi3+, 0.05Sm3+phosphor possessed good optical temperature sensitivity, with a maximum absolute sensitivity Sa-maxof 0.0055 K−1and a maximum relative sensitivity Sr-maxof 0.88% K−1, demonstrating its valuable potential applications for optical temperature sensors.
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2025
·Vol. 13
·期 36
·18664-18673
·
IF 5.1
Minyu Jin,Wenhao Li,Luyue Niu,Yongshun Gu,Jiancai Xie,Shuo Liu,Feng Yan,Jing Ren,Jianzhong Zhang
Conventional mechanoluminescent (ML) materials are limited to stress sensing, restricting their application in integrated optical sensing. In this study, we develop a multimode-emitting phosphor, Sr2.996(Sn1.75Ge0.25)O7.002:0.004Sm3+, which exhibits simultaneously excellent ML properties through defect engineering of the host matrix and non-contact temperature sensing capability based on the fluorescence intensity ratio (FIR). The incorporation of Li+ boosts the ML intensity by approximately 4-fold, resulting in an ML signal 30 times stronger than its persistent luminescence (PersL). The enhancement drastically suppresses the PersL interference during stress sensing. Furthermore, the phosphor exhibits a high relative temperature sensitivity of 1.48% K−1 at 303 K. Experimental characterization and first-principles calculations elucidate the mechanism behind the ML enhancement. Multifunctional phosphors, capable of simultaneous non-contact stress and temperature sensing, have significant potential for application in advanced optical sensing systems, particularly in high-temperature, high-pressure machinery monitoring, and are expected to find practical applications in industrial monitoring, biomedical devices, aerospace and deep-water exploration.
研究领域:
材料科学
·
光学传感
·
发光材料
·
智能传感器
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2021
·
IF 5.876
Liu Yang,Yu-Long Liu,Xian-Xian Ji,Cheng-Guo Liu,Ying Fu,Fei Ye
Background A novel luminescent sensor with dual-emitting platforms, Tb@UiO-66 , was used for highly detecting Sm 3+ and teflubenzuron. Methods Tb@UiO-66 was synthesized on basis of the exchange of guest molecules, where Tb 3+ ions were encapsulated into the cages of UiO-66 . Significant finds The results of multiband fluorescence originated from the linker-to-cluster charge transfer and the characteristic emission of Tb III . Tb@UiO-66 displayed luminescence enhancements or quenches according to small molecules. Especially for Sm 3+ and teflubenzuron, the characteristic peaks of Tb@UiO-66 at 490, 545, 585, and 621 nm increased with the increasing of the concentration of the analytes, where Tb@UiO-66 exhibited the effect of luminescence enhancement. The detection limits for detecting Sm 3+ and teflubenzuron were 0.09 μM and 0.21 μM, and the changes of luminescence intensities could be observed by naked eyes under the UV light at 365 nm. Tb@UiO-66 could also be used to detect teflubenzuron in real water samples. Tb@UiO-66 could be reused for at least 5 cycles for the detection of Sm 3+ and teflubenzuron with the framework of Tb@UiO-66 uncollapsed. These results implied that the integration of Ln III luminescent materials and Zr-MOFs by doping method provided a new strategy for fabricating novel luminescent sensors for detecting polluting small molecules.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2015
·
IF 2.353
Renping Cao,Dedong Peng,Haidong Xu,Shenhua Jiang,Ting Fu,Wenjie Luo,Zhiyang Luo
A series of Sr 3 (VO 4 ) 2 :Sm 3+ ,P 5+ ,Na + phosphors are synthesized by using solid-state reaction method in air. The strongest emission band peaking at ∼600 nm is assigned to the 4 G 5/2 → 6 H 7/2 transition of Sm 3+ ion, and the strong excitation peak at ∼402 nm due to 6 H 5/2 → 4 F 7/2 transition indicates that these phosphors can be excited by near ultraviolet light emitting diode chip. Energy transfer (ET) between VO 4 3− group and Sm 3+ ion can be observed. Sr 3 (VO 4 ) 2 :Sm 3+ phosphor with excitation 320 nm exhibits a systematically varied hues from green to yellow by changing Sm 3+ ion concentration from 0 to 6 mol%. The luminous mechanism of Sr 3 (VO 4 ) 2 :Sm 3+ phosphor is explained by using the energy level diagrams of VO 4 3− group and Sm 3+ ion. The luminescence properties of Sr 3 (VO 4 ) 2 :Sm 3+ phosphor can be improved and tuned by codoping the P 5+ and Na + ions due to ET and charge compensation. Lifetimes of Sr 2.925 Sm 0.05 (VO 4 ) 2 , Sr 2.925 Sm 0.05 (V 0.9 P 0.1 O 4 ) 2 , and Sr 2.9 Na 0.05 Sm 0.05 (V 0.9 P 0.1 O 4 ) 2 phosphors are 1.208, 1.219, and 0.796 ms, respectively. The experiment results are helpful to adjust the luminescence properties of Sm 3+ -doped other phosphors.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2017
·
IF 5.951
Meiqi Chang,Yanhua Song,Jie Chen,Lei Cui,Zhan Shi,Ye Sheng,Haifeng Zou
A novel multifunctional core–shell, yolk–shell SiO2@TiO2:Eu3+/Sm3+ and hollow TiO2:Eu3+/Sm3+ structures were successfully synthesized. The relationship between morphology/ions doping and multifunctional properties including photoluminescence and photocatalysis has been discussed in detail for the first time using systematic characterization techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), photoluminescence (PL), ultraviolet–visible light (UV-vis) analysis, Fourier transform infrared (FT-IR) spectroscopy, Brunauer–Emmett–Teller (BET) surface area analysis, and X-ray photoelectron spectroscopy (XPS). Upon ultraviolet (UV) excitation, the products show the characteristic red and orange–red emission lines of Eu3+ and Sm3+, respectively. In addition, Judd–Ofelt intensity parameters (Ω2, Ω4) were used to investigate the symmetry and coordination state of Eu3+ ions in the products with different morphologies. The relative luminescence intensities were in the following order: yolk–shell > core–shell > hollow structure. This phenomenon can be ascribed to the unique yolk–shell configuration, which possesses appropriate interior cavity used for multiple reflections and scattering, allowing for more-efficient utilization of the light. Moreover, compared with yolk–shell and hollow structure, the core–shell spheres exhibit excellent photoactivity for the degradation of MO, because the existence of Ti–O–Si bonds increases the surface acidity of the sample, thereby activating the oxidation reaction. In addition, the electron activation in the TiO2 matrix can be facilitated through intermediate oxygen atoms. Moreover, products doped with different rare-earth (RE3+) ions exhibited distinguishable photocatalytic performance. The surfactant-free method provides a promising route toward the development of multifunctional materials for many applications in photocatalysis and PL.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2021
·
IF 4.527
Bingjie Han,Jing Ren,PingPing Teng,JiaBao Zhu,Yu Shen,ZhiAng Li,Xiaoliang Zhu,Xinghua Yang
At present, the combination of red, green and blue light (RGB) is one of the mainstream ways to obtain high-efficiency white light emitting diodes (w-LEDs). In this paper, we have prepared a new type of Sm 3+ activated Ca 2 LaSbO 6 (CLSO) orange-red phosphor by the high-temperature solid-phase method. The phase and morphology of the powders were characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FESEM), respectively. The luminescent properties, thermal stability of the materials have been tested and analyzed in detail. The results show that CLSO:Sm 3+ phosphors have several excitation bands in the range of 320–550 nm, and the excitation peak intensity at 405 nm is the largest, indicating that the material can be excited by blue light. The emission peak is composed of 564 nm (yellow), 601 nm (orange) and 648 nm (red), emission intensity reaches the extreme value when the Sm 3+ doping concentration is 5 mol%, the quenching phenomenon is due to the dipole-dipole (d-d) interaction of Sm 3+ ions. The activation energy ( E a ) of Sm 3+ in CLSO is 0.2689 eV. The CIE chromaticity coordinates of CLSO:Sm 3+ located at origin-red region. All results show that CLSO:Sm 3+ phosphor has potential application value in w-LEDs field.
研究领域:
材料科学
·
光学
✓ 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）