DYES AND PIGMENTS
·
2017
·
IF 3.473
Renping Cao,Changlin Liao,Fen Xiao,Guotai Zheng,Wen Hu,Yimin Guo,Yuanxiu Ye
A series of LiLaMo 2 O 8 :Eu 3+ , R (R = Bi 3+ and Sm 3+ ) phosphors are synthesized by a high temperature solid-state reaction method in air. The crystal structures, fluorescence lifetimes , and luminescence properties are investigated in detail. LiLaMo 2 O 8 :Eu 3+ phosphor with excitation 395 nm shows red light in the range of 525–725 nm and it photoluminescence intensity may be enhanced ∼2.35 times due to energy transfer (ET) from a sensitizing species (Bi 3+ or Sm 3+ ) to Eu 3+ ion after Bi 3+ or Sm 3+ ion is co-doped. The optimal Eu 3+ , Bi 3+ , and Sm 3+ ion concentrations are 4%. Luminous mechanism of LiLaMo 2 O 8 :Eu 3+ , R (R = Bi 3+ and Sm 3+ ) phosphors and ET processes between Eu 3+ and Bi 3+ /Sm 3+ ions are analyzed and explained by their excitation and emission spectra and energy level diagrams of Eu 3+ , Bi 3+ , and Sm 3+ ions. The experimental results indicate that LiLaMo 2 O 8 :Eu 3+ , R (R = Bi 3+ and Sm 3+ ) phosphors may be used as potenial red emitting materials for white light emitting diodes (LEDs) based on either a near ultraviolet (∼395 nm) or blue (∼465 nm) chip.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Chong Yang,Juling Long,Bin Li,Rongbo Ma,Bin Cao,Chaoyong Deng,Weichao Huang
A series of CaLaMgSbO 6 : Sm 3+ orange-red phosphors were synthesized using a high-temperature solid-state method. These phosphors' phase, luminescence properties, and thermal stability were thoroughly investigated. Under 405 nm excitation, the CaLaMgSbO 6 : Sm 3+ phosphor exhibit a broadband orange-red emission with the maximum emission peak positioned at 598 nm. The optimal CaLaMgSbO 6 : 0.025Sm 3+ phosphor features CIE chromaticity coordinates of (0.5902, 0.4085) with an orange-red hue. Impressively, the emission intensity at 423 K remains at 78.7 % of its room temperature intensity, which shows its outstanding thermal stability. The emission spectra of light-emitting diodes (LEDs) fabricated with CaLaMgSbO 6 : 0.025Sm 3+ phosphor possess a large overlap with the absorption band of phytochromes. Meanwhile, the temperature-sensing properties of CaLaMgSbO 6 : Sm 3+ phosphors were studied across various wavelength bands using the fluorescence intensity ratio (FIR) technique. The relative sensitivity of FIR (I 598 /I 563 ) was found to be highest at 298 K, measuring 0.15 % K −1 . The above research results suggest that CaLaMgSbO 6 : Sm 3+ phosphors have potential applications in plant growth and optical temperature sensing.
研究领域:
材料科学
·
光学
·
植物学
✓ 已验证
产品关联
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
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 9
·6576-6591
·
IF 2.779
Wu Jinxiu,Wang Xin,Jia Huiling,Liu Zhaogang,Niu Xiaochao
Fluorescent nano-probes have great potential applications for diagnostics and therapy. In this work, the microwave-assisted Stöber method was used for the surface modification of the spherical nano-phosphor YPO 4 :2%Sm 3+ to solve the problems of hydrophilicity and biocompatibility of spherical fluorescent nano-material YPO 4 :Sm 3+ . Their structural, morphology and optical properties were determined using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectra, TG–DTA curve and fluorescence spectrophotometry. And the adsorption of YPO 4 :2%Sm 3+ @SiO 2 to bovine serum albumin was studied by the static isothermal adsorption method. Results indicated that YPO 4 :2%Sm 3+ @SiO 2 was uniformly monodisperse core–shell nano-sphere with an average diameter of 60–90 nm. The crystal structure and morphology of the phosphor YPO 4 :Sm 3+ was not changed after the surface modification, the thickness of the coating layer was approximately 10–20 nm and the fluorescence intensity and lifetime of the modified product were reduced. The adsorption of YPO 4 :2%Sm 3+ @SiO 2 to protein was the mono-molecular layer adsorption, the adsorption formula was Y = 0.0051 X −0.0000037 and the maximum adsorption amount q = 198.89 mg/g. This study successfully solved the problems of hydrophilicity and biocompatibility of spherical nano-phosphor YPO 4 :2%Sm 3+ .
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
OPTICAL MATERIALS
·
2021
·
IF 3.08
Kun Zhu,Haitao Lv,Yanmin Wang,Zhidong Pan
Sm 3+ doped calcium stannate (CaSnO 3 :Sm 3+ ) and (Sm 3+ , Zr 4+ )-co-doped calcium stannate (CaSnO 3 :Sm 3+ , Zr 4+ ) photoluminescent phosphors were synthesized via co-precipitation and subsequent sintering in oxidizing atmosphere at 1400 °C for 60 min with SnCl 4 ·5H 2 O, CaCl 2 ·2H 2 O, ZrO(NO 3 ) 2 · x H 2 O and Sm 2 O 3 as main raw materials. The synthesized samples were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, photoluminescent spectroscopy, luminescent decay curves, afterglow spectroscopy and thermo-luminescent glow curves. The results show that CaSnO 3 pure phase is synthesized in co-precipitation reaction at an optimum molar ratio of CaCl 2 ·2H 2 O:SnCl 4 ·5H 2 O of 1.4:1.0 and subsequent sintering at 1400 °C for 60 min. Calcium stannate as a host matrix can be doped with Sm 3+ ions or co-doped with Sm 3+ /Zr 4+ ions for the formation of white photoluminescent phosphors. CaSnO 3 :0.03Sm 3+ phosphor has an optimum photoluminescent intensity. Also, the fluorescent emission intensity of CaSnO 3 :0.03Sm 3+ ，0.04Zr 4+ phosphor under excitation of 365 nm wavelength can be enhanced due to Zr 4+ ions doping at an optimum doping amount y of 0.04. The CIE 1931 chromaticity coordinates change from (0.3600, 0.3535) for CaSnO 3 :0.03Sm 3+ phosphor to (0.3622, 0.3574) for CaSnO 3 :0.03Sm 3+ , 0.04Zr 4+ phosphor as the average crystalline size decreases from 71.5 to 68.3 nm and the unit cell volume increases from 0.2686 to 0.2775 nm 3 . In addition, the electron transition mechanism for the photoluminescent and long afterglow properties was also discussed.
研究领域:
材料科学
·
光学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
SOLID STATE SCIENCES
·
2015
·
IF 1.839
Yan-Jing Gu,Bing Yan
A series of organic–inorganic hybrid materials were prepared by linking lanthanide (Eu 3+ , Sm 3+ ) complexes to mesoporous SBA-15/SBA-16 through 8-hydroxybenz[de]anthracen-7-one modified silane (HBA-Si) as linker. The physical characterizations of these hybrids revealed that they all have high surface area, uniformity in mesostructure. The luminescence properties of these covalently bonded materials (denoted as Ln(HBA-SBA-15) 3 phen and Ln(HBA-SBA-16) 3 phen) were compared with ternary complexes (Ln(HBA) 3 phen) (Ln = Eu, Sm). Eu(HBA-SBA-15(16)) 3 phen hybrids display better thermal stability, whose luminescent lifetimes and quantum efficiencies were matchable with those of Eu(HBA) 3 phen complex in spite of its much lower effective condensation of Eu 3+ species. In addition, the luminescent performance of functionalized SBA-15 hybrids was more favorable than that of functionalized SBA-16 hybrids, revealing that SBA-15 was a better host material for lanthanide complex than mesoporous silica SBA-16.
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
Inorganics
·
2024
·Vol. 12
·期 12
·327
·
IF 3.1
Ronghua Jian,Tao Pang
This work reports the light-to-heat conversion (LHC) behavior of NaNdF4doped with Sm3+. Due to the cross-relaxation between Nd3+and Sm3+, the improved LHC is obtainable by introducing 5% Sm3+. When the laser power density is only 1.72 W/cm2, the spot temperature of NaNdF4:5%Sm3+powder reaches as high as 138.7 ± 4.04 °C. More importantly, the photoheating response to the pump laser has favorable linear characteristics within a specific power range. A simple physical model is applied to analyze the relationship between photothermal heating and pump power. Finally, the temperature-responsive luminescence anti-counterfeiting is designed by combining the LHC material with the NaYF4:Yb3+/Ho3+/Ce3+microcrystals. This novel strategy only requires two laser beams, and thus is more convenient to apply.
研究领域:
材料科学
·
光学
·
物理化学
✓ 已验证
DOI
高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Rong Zhuang,Bijun Fang,Shuai Zhang,Xiaolong Lu,Jianning Ding
A series of [(Ba (1-0.3y) Ca 0.3y ) 1-x Sm x ][Ti (0.8+0.2y) Hf (0.2-0.2y) ]O 3 (Sm 3+ -doped (1-y)Ba(Ti 0.8 Hf 0.2 )O 3 -y(Ba 0.7 Ca 0.3 )TiO 3 , abbreviated as Sm 3+ -doped BCTH, or (1-y)BHT-yBCT:xSm 3+ , x = 0.0005–0.03, y = 0.2–0.7, y representing the mole fraction of (Ba 0.7 Ca 0.3 )TiO 3 ) nano phosphors were prepared by a hydrothermal method . The Sm 3+ ions doping amount and triple-point morphotropic phase boundary (TMPB) composition dependent photoluminescence properties were systematically investigated. The hydrothermal synthesized powders present rather pure pseudo-cubic perovskite phase structure at room temperature and locate on the rhombohedral side of MPB. Under the excitation of 409 nm light, the powders exhibit dominant orange-red emission peaks with characteristic emission of the Sm 3+ ions at around 564 nm, 596 nm, 644 nm, and 703 nm, relating to the transitions of 4 G 5/2 → 6 H 5/2 , 6 H 7/2 , 6 H 9/2 and 6 H 11/2 , respectively. The BHT-0.5BCT:0.005Sm 3+ powder exhibits optimal emission in these Sm 3+ -doped BCTH powders. Furthermore, the phase transition temperature can be characterized by the multi-feature changes of the temperature dependent fluorescence intensity.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yixi Lu,Bin Cao,Bin Li,Tingting Zhang,Hai Wu,Chaoyong Deng,Weichao Huang
To fulfill bifunctional applications of the optical thermometry and fingerprint detection, Sm 3+ -doped La 3 SnGa 5 O 14 phosphors were synthesized. Under 403 nm excitation, the phosphor showed strong orange-red emission with the peaks at 562, 599, 644, and 707 nm, originating from the 4 G 5/2 → 6 H n/2 (n = 5, 7, 9, and 11) transition of Sm 3+ . Interestingly, La 3 SnGa 5 O 14 : Sm 3+ had excellent thermal stability of the PL peak at 599 nm and anti-thermal quenching property of the PL peak at 562 nm. Leveraging this unique behavior, an optical thermometer based on the fluorescence intensity ratio (FIR) was designed and had a maximum relative sensitivity (S r ) of 0.2348 % K −1 at 423 K. Furthermore, the fluorescent latent fingerprints images prepared with La 3 SnGa 5 O 14 : Sm 3+ phosphor were well visualized, and the level 1–3 features could be identified under ultraviolet irradiation. These findings suggest that the La 3 SnGa 5 O 14 : Sm 3+ phosphor has potential applications in optical thermometry and fingerprint detection.
研究领域:
材料科学
·
光学物理
·
分析化学
·
法庭科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yutong Wang,Sha Jiang,Jialiang Xie,Linlin Xie,Chuanliang Feng,Yongjie Wang,Guotao Xiang,Li Li,Yanhao Huang,Xianju Zhou,Feng Wang
Ratiometric luminescent thermometry is favored for its unique advantages and significant potential applications, particularly in the biomedical field. That has driven growing interest in the development of novel luminescent materials with ultra-high sensitivity in the physiological temperature range. Our study focuses on materials that exhibit temperature-induced phase transition within the physiological temperature range, thus facilitating the development of highly sensitive luminescent thermometers. Through a series of experimental explorations, we have discovered that LiYO 2 :1%Sm 3+ undergoes a phase transition from a monoclinic structure to a tetragonal structure within the temperature range of 320–330 K. Subsequently, a luminescent thermometer based on LiYO 2 :Sm 3+ phosphor was designed, capitalizing on the contrasting thermal response of the emissions associated with monoclinic and tetragonal structures, achieving ultra-high sensitivity of 17.51% K −1 at 322 K, making it suitable for the application in the biomedical field. Especially, the optimal temperature range for LiYO 2 : Sm 3+ thermometer aligns well with mitochondrial temperature, presenting potential applications in cancer diagnosis and photothermal therapy.
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
MOLECULES
·
2024
·Vol. 29
·期 23
·5495
·
IF 4.2
Anlin Zhang,Yue Yang,Yuqing Peng,Hao Zhou,Wei Tang,Jianhong Jiang,Yiting Wu,Shiying Cai,Lianwu Xie,Bin Deng
In this study, a series of Sr6LuAl(BO3)6:Sm3+red phosphors were successfully prepared with a high-temperature solid-phase technology. The Rietveld refinement analysis of the X-ray diffraction (XRD) diffraction patterns indicated that the as-prepared phosphors belong to theR3¯space group of the hexagonal crystal system. Under 404 nm near-ultraviolet excitation, the Sr6LuAl(BO3)6:Sm3+phosphor exhibits narrowband emission within the range of 550 to 750 nm. The primary emission peak is observed at a wavelength of 599 nm, corresponding to6H5/2→4F7/2. The optimum doping concentration of the Sr6LuAl(BO3)6:xSm3+phosphor is 10 mol%. Nearest-neighbor ion interaction is the mechanism of concentration quenching. The synthesized phosphors demonstrate exceptional thermal stability, with a high quenching temperature (T0.5> 480 K). Furthermore, the assembled white light-emitting diode (w-LED) device exhibits a low color temperature (5464 K), an excellent color rendering index (Ra= 95.6), and CIE coordinates (0.333, 0.336) close to those of standard white light. Collectively, these results suggest the enormous potential of Sr6LuAl(BO3)6:Sm3+phosphors for applications in w-LEDs.
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2020
·
IF 4.65
Changyan Ji,Zhi Huang,Xiuying Tian,Hengping He,Jin Wen,Yangxi Peng
A series of red emitting phosphors Mg 3 Y 2-x Ge 3 O 12 :xSm 3+ (0≤x ≤ 0.06) were successfully synthesized. Samples Mg 3 Y 2-x Ge 3 O 12 :Sm 3+ exhibited a cubic structure pertaining to the I a-3d (230) space group and the particle sizes range from 1 μm to 5 μm. The optical properties displayed that the optimum doping concentration of Sm 3+ is 4%. The phosphor Mg 3 Y 1.96 Ge 3 O 12 :0.04Sm 3+ not only exhibited a broad band gap of 5.54 eV but also showed a high color purity of 97.6%. In addition, the strongest emission intensity located at 566 nm belonged to the 4 G 5/2 → 6 H 5/2 transition when excited at 405 nm. Thermal quenching test revealed that the sample Mg 3 Y 1.96 Ge 3 O 12 :0.04Sm 3+ are excellent powders with splendid thermal stability, in which only 3.6% of the PL intensity is quenched at 473 K in comparison with that of 298 K. As a result, the W-LEDs based on Mg 3 Y 1.96 Ge 3 O 12 :0.04Sm 3+ yielded a high R a of 91.1, a low CCT of 4881 K, and CIE coordinates of (0.3476, 0.3466) in a 20 mA driven current. This research work provided important guidance for the synthesis of Sm 3+ doped red component with excellent luminesce properties and high thermal stability characteristics used in W-LEDs.
研究领域:
材料科学
·
光学工程
✓ 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）