JOURNAL OF LUMINESCENCE
·
2020
·
IF 3.28
Qiang Liu,Jingdong Xu,Peixiong Zhang,Anming Li,Zhen Li,Hao Yin,Encai Ji,Zhenqiang Chen
A Sm 3+ /Ce 3+ co-doped Gd 0.1 Y 0.9 AlO 3 laser crystal was successfully grown and analyzed. The use of Ce 3+ co-doping for enhancing the Sm 3+ : 4 G 5/2 → 6 H 7/2 yellow emission was investigated in the Gd 0.1 Y 0.9 AlO 3 crystal for the first time. In comparison to Sm 3+ single-doped Gd 0.1 Y 0.9 AlO 3 crystal, the Sm 3+ /Ce 3+ co-doped Gd 0.1 Y 0.9 AlO 3 crystal had a higher luminescence branching ratio (48.9%) and luminescence emission cross section (5.01×10 −20 cm 2 ) corresponding to the laser transition 4 G 5/2 → 6 H 7/2 of Sm 3+ . It was found that the introduced Ce 3+ greatly enhanced the 602 nm emission by increasing the population of the laser excited level Sm 3+ : 4 G 5/2 . These results suggest that Sm 3+ /Ce 3+ co-doped Gd 0.1 Y 0.9 AlO 3 crystal may be an attractive host for developing solid state lasers at around 602 nm laser applications.
研究领域:
光学材料
·
激光物理
·
固体激光器
·
稀土掺杂
·
光子学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2020
·Vol. 31
·期 5
·3944-3950
·
IF 2.22
Tian Xiuna,Dou Hongjian,Wu Lingyuan
Based on the luminescence of Bi 3+ , novel temperature sensing materials CaZrO 3 :Bi 3+ and CaZrO 3 :Bi 3+ /Sm 3+ were successfully synthesized by solid-state reaction. The XRD patterns show that the synthesized materials have a pure phase of CaZrO 3 . The XPS results show that the Bi 3+ and Sm 3+ can be detected in CaZrO 3 :Bi 3+ /Sm 3+ . With the excitation of 318 nm, the CaZrO 3 :Bi 3+ material shows intense temperature-dependent luminescence. The maximum relative sensitivity can be obtained at 440 K (1.78% K −1 ). Under the excitation of 408 nm, the CaZrO 3 :Sm 3+ material shows the characteristic emission peaks of Sm 3+ . The spectral overlap between the emission spectrum of Bi 3+ and the excitation spectrum of Sm 3+ leads to an energy transfer from Bi 3+ to Sm 3+ in CaZrO 3 :Bi 3+ /Sm 3+ phosphor. With the excitation of 318 nm, the emission spectrum of CaZrO 3 :Bi 3+ /Sm 3+ material shows the characteristic peaks of Bi 3+ and Sm 3+ . The fluorescence decay curves also show the evidence of the energy transfer from Bi 3+ to Sm 3+ . The luminescence intensity ratio of Sm 3+ and Bi 3+ in CaZrO 3 :Bi 3+ /Sm 3+ shows obvious temperature dependence. Based on the luminescence intensity ratio, a large relative sensitivity is obtained at 443 K (1.15% K −1 ).
研究领域:
材料科学
·
光学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Chunkai Wang,Ruirui Cui,Jun Zhang,Chaoyong Deng
In this study, a Ba 3 MgTa 2 O 9 : x Sm 3+ orange-red phosphor was synthesized by a high-temperature solid-phase reaction method, and its fluorescence properties were analyzed. The Ba 3 MgTa 2 O 9 : x Sm 3+ phosphor exhibited three emission peaks at 561 nm ( 4 G 5/2 → 6 H 5/2 ), 595 nm ( 4 G 5/2 → 6 H 7/2 ), and 642 nm ( 4 G 5/2 → 6 H 9/2 ) under the excitation of 407 nm. The Ba 3 MgTa 2 O 9 :0.05Sm 3+ phosphor had good thermal stability and excellent color stability at different temperatures. Ba 3 MgTa 2 O 9 :0.05Sm 3+ phosphor is the best doping concentration phosphor, with a high color purity of 98.52 %. The XRD of the Sm 3+ ion-doped phosphor showed that its crystal structure and morphology were stable, and the doping of Sm 3+ ions did not affect its crystal structure significantly. Therefore, the Sm 3+ ion-doped phosphors in this study have potential applications and are expected to be used in the field of WLED.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2017
·
IF 2.446
Changlin Liao,Renping Cao,Wudi Wang,Wen Hu,Guotai Zheng,Zhiyang Luo,Pan Liu
NaY(MoO 4 ) 2 :R (R = Sm 3+ /Bi 3+ , Tb 3+ /Bi 3+ , Sm 3+ /Tb 3+ ) phosphors are synthesized by solid-state reaction method in air. The crystal structures, excitation and emission spectra, luminescence properties, the lifetimes, and the dopant concentration influences are investigated. The emission intensity of activators Sm 3+ and Tb 3+ can be enhanced ∼3.04 and 1.64 times due to energy transfer (ET) from Bi 3+ to Sm 3+ /Tb 3+ . NaY(MoO 4 ) 2 :Sm 3+ , Tb 3+ phosphor with excitation 300 nm shows a tunable emission from red to yellow with change Sm 3+ or Tb 3+ ion concentration. Emission intensity of NaY(MoO 4 ) 2 :Sm 3+ phosphor can be enhanced ∼2.24 times via co-doping Tb 3+ ion owing to ET from Tb 3+ to Sm 3+ ions. The results indicate that ET between sensitizer and activator (Bi 3+ → Tb 3+ , Bi 3+ → Sm 3+ , and Tb 3+ → Sm 3+ ) is beneficial to improve the luminescence properties of activator (Sm 3+ and Tb 3+ ). ET and luminous meachanisms are explained by energy level diagrams of Bi 3+ , Tb 3+ , and Sm 3+ ions.
研究领域:
材料科学
·
发光材料
·
光学物理
·
固态化学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2026
·
IF 4.6
Jingyi Gao,Haihong Du,Yu Cui,Tianchi Li,Li Wu,Yongfa Kong,Yi Zhang,Jingjun Xu
In modern high-power lighting systems, significant thermal effects can lead to the performance degradation of light-emitting diodes (LEDs), which places higher requirements on the thermal stability of luminescent materials for color conversion. Currently, the thermal stability of red phosphors remains a critical bottleneck for high-power white light-emitting diodes (wLEDs). To address this, we report a red phosphor, Ca2GdSbO6:Sm3+ (CGSO:Sm3+), exhibiting significant antithermal quenching. This remarkable property is attributed to a synergistic mechanism involving the rigid double-perovskite host structure and efficient thermally driven energy transfer from deep-level defects to the Sm3+ emitting centers. As a result, the phosphor exhibits outstanding thermal stability, with the emission intensity at 250 °C reaching 160% of its initial value at room temperature. A prototype wLED fabricated by using CGSO:Sm3+ as the red component achieves a high color rendering index (Ra = 90) and excellent color stability. These findings establish CGSO:Sm3+ as a promising candidate for high-performance lighting and offer a new design strategy for developing luminescent materials with high thermal stability.
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF LUMINESCENCE
·
2024
·
IF 3.3
Weiguang Ran,Zicheng Zhang,Fukai Wang,Huixin Jiang,Yue Shao,Xiaoli Ma,Jiayi Geng,Tingjiang Yan
In this paper, the novel BaY 2 (MoO 4 ) 4 :xSm 3+ phosphors with strong red emission and high thermal stabilization were prepared by a conventional method of high temperature solid state reaction in air atmosphere. Morphology, phase purity, element distribution, UV–Vis–NIR diffuse reflectance spectroscopy (DRS), and luminescence properties were investigated in detail. The crystal structure of the BaY 2 (MoO 4 ) 4 host was refined with the aid of the Rietveld refinement method by the GSAS program. The electronic band structure and phonon dispersion were performed using plane-wave density functional theory (DFT). The prepared BaY 2 (MoO 4 ) 4 :Sm 3+ phosphor exhibits excellent red emission under near-ultraviolet excitation. Strong red emission intensity and high thermal stability suggest potential application in backlighting or phosphor-covered white light-emitting diodes (pc-LEDs).
研究领域:
材料科学
·
光学
·
理论计算
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2012
·
IF 2.289
Pingfan Du,Lixin Song,Jie Xiong,Houbao Cao,Zhenqiang Xi,Shaoyi Guo,Naiyan Wang,Jianjun Chen
Samarium ions doped strontium molybdate (SrMoO 4 :Sm 3+ ) nanofibers (NFs) were fabricated by a simple electrospinning process. The obtained SrMoO 4 :Sm 3+ NFs are composed of scheelite-type tetragonal SrMoO 4 phase, and the NFs have an average diameter of ca. 90 nm. Under 275 nm ultraviolet (UV) excitation, the NFs show an orange-red fluorescent property symbolized by a characteristic emission (606 nm) resulting from the 4 G 5/2 → 6 H 7/2 energy level transition of Sm 3+ . And the photoluminescence (PL) emissi on intensity of the SrMoO 4 :Sm 3+ NFs is superior to that of the nanoparticles (NPs) counterpart under the same doping concentrations. The effect of Sm 3+ concentrations on the 4 G 5/2 → 6 H 7/2 emission intensity was also investigated. The result reveals that the concentration quenching will occur when the Sm 3+ content exceeds 2 at.%. In other words, the SrMoO 4 :Sm 3+ NFs have an optimal luminescent performance under such a doping concentration.
研究领域:
材料科学
·
纳米科技
·
发光材料
·
无机功能材料
✓ 已验证
DOI
高影响因子
MATERIALS RESEARCH BULLETIN
·
2026
·
IF 5.8
Li Zhang,Tong Yu,Hancheng Zhu,Meng Zhang,Ji Zhang,Xinzhao Zhang,Guorui Wang,Pengpeng Dai
A serious of orange-red Sr 2 TiSi 2 O 8 :Sm 3+ phosphors are synthesized and characterized. • The phosphor can reach a quantum yield of 47.8% along with excellent thermal stability. • Sm 3+ doped Sr 2 TiSi 2 O 8 can be used for white-LEDs. A family of orange-red-emitting Sr 2 TiSi 2 O 8 :Sm 3+ phosphors was fabricated through a conventional high-temperature solid-state reaction and comprehensively evaluated as candidates for white light-emitting diode (W-LED) applications. A systematic series of Sr 2(1- x ) TiSi 2 O 8 :2 x Sm 3+ compositions was obtained via a straightforward and economical synthetic procedure, and the phase purity, luminescence behavior, decay kinetics, and temperature-dependent stability were thoroughly examined. The composition Sr 1.98 TiSi 2 O 8 :0.02Sm 3+ which showed the best performance exhibited strong orange-red emission at 597 nm on pumping at 402 nm and showed reasonably good thermal stability between 298 K and 568 K. The photoluminescence output continually decreased as the temperature increased; however, the spectral shape and peak wavelength exhibited no shift. A peak internal quantum yield (IQY) of 47.8%, combined with satisfactory thermal stability up to 568 K, underscores the practical viability of these phosphors as a warm-orange spectral component in NUV-pumped trichromatic W-LED assemblies. Download: Download high-res image (241KB) Download: Download full-size image A new series of orange-red Sr 2 TiSi 2 O 8 :Sm 3+ phosphors was successfully synthesized using high-temperature solid-phase methods. The crystal structure, photoluminescence characteristics, lifetimes, and thermostability of Sr 2 TiSi 2 O 8 :Sm 3+ were thoroughly investigated.
✓ 已验证
DOI
高影响因子
CRYSTENGCOMM
·
2024
·
IF 2.6
Yuxia Li,Qi Luo,Xin Huang,Hao Lu,Yazhou Yuan,Xieming Xu,Shuaihua Wang,Shaofan Wu
In recent years, the development of new scintillation materials with red and near-infrared light emission has had significant advantages based on the development of an avalanche photodiode with high quantum yield. This study used a hydrothermal method to synthesize rare-earth-doped Cs2NaScCl6 crystals, in which a red emission of Cs2NaScCl6:Sm was investigated with high X-ray sensitivity and low detection limit. In addition, a tunable wavelength range of radioluminescence can be achieved, in which a near-white light emission can be generated by precisely controlling the proportion of Sm3+ and Tb3+ doping concentrations. Meanwhile, a Cs2NaScCl6:7%Sm scintillation film has been successfully prepared by direct coating with a thickness of 150 μm, which achieves a spatial resolution of 11.9 lp mm−1 based on X-ray imaging experiments. Therefore, this perovskite material has shown potential application as an eco-friendly multifunctional imaging material.
研究领域:
材料科学
·
医学影像
·
光学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 7
·1-12
·
IF 2.8
Xie Le-Tian,Zhou Xiao-Xiao,Tang Yu-Cheng,Yin Yang,Hao Yijin,Pei Jun,Zhang Bo-Ping
With the increasing demand for portable electronics, power electronics and other devices, energy storage materials with high power density and large energy storage density are becoming more and more important. BiFeO 3 -BaTiO 3 lead-free ferroelectric ceramics are deemed as a potential lead-free energy storage material due to their high spontaneous polarization and high Curie temperature. However, high remanent polarization has become a serious obstacle to its practical application. In this work, 0.67Bi (1- x ) Sm x FeO 3 -0.33BaTiO 3 (BS x F-BT, 0 ≤ x ≤ 0.10) was prepared by the conventional solid phase sintering method. The phase transforms from rhombohedral to pseudocubic, and the dielectric and electrical data reveal that relaxor ferroelectrics are favorable for achieving the small size polar nanoregions and enhanced relaxation behavior. Due to enhanced relaxation behavior by doping Sm 3+ , the recoverable energy storage density ( W rec ) reaches 1.99 J/cm 3 , and the energy storage efficiency ( η ) is 57% at a low electric field (190 kV/cm), which is higher than the undoped ceramic ( W rec = 0.272 J/cm 3 and η = 26%). This work also puts forward the concept of Ergodic relaxor ferroelectrics and Non-ergodic relaxor ferroelectrics to explain the improvement of energy storage performance.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
POLYMERS & POLYMER COMPOSITES
·
2019
·
IF 0.683
Qing Zhang,Guixian Su
Polysiloxane with amino group as the functional side chain was prepared via equilibrium polycondensation reaction. It was modified with salicylaldehyde and then incorporated with lanthanide ions (Dy3+ and Sm3+) to obtain two luminescent functionalized polysiloxane–lanthanide composite materials. The structures and properties of products were characterized by Fourier transform infrared spectroscopy, proton nuclear magnetic resonance spectroscopy, ultraviolet–visible absorption spectroscopy, fluorescent emission spectroscopy, and thermogravimetric analysis. The results show that two kinds of lanthanide ions were all incorporated successfully with the functionalized polysiloxanes. The coordination effect exists between the nitrogen atoms on the ligand and the lanthanide ions. In addition, the green and red light emissions that are characteristic of Dy3+ and Sm3+ were achieved.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2026
·
IF 4.8
Xiumei Guo,Yanzhi Zhang,Xingyang Peng,Heng Yu,Chengjun Pan,Ruirui Cui,Xiang Guo
The development of high-efficiency and thermally stable phosphors is crucial for improving the color rendering index (CRI) of near-ultraviolet (n-UV) pumped white light-emitting diodes (WLEDs). In this work, a novel orange-red emitting phosphor La 2 SrGa 4 Si 2 O 14 :Sm 3+ was successfully synthesized via a [Sr 2+ -Si 4+ ] co-substitution strategy to optimize the lattice of the traditional La 3 Ga 5 SiO 14 . Detailed structural analyses confirmed the successful substitution and phase purity. Excited by n-UV light at 402 nm, the phosphor exhibited a prominent emission peak at 600 nm, with an optimal doping concentration of 3 mol%. The material exhibits acceptable thermal stability, retaining 74% of its initial emission intensity at 423 K, together with an internal quantum efficiency of 32.3%, which is comparable to those of several reported Sm 3+ -activated silicate phosphors. When integrated into WLED devices with blue and green phosphors, it yielded high-quality warm white light with a low correlated color temperature of 4680 K and an exceptionally high CRI of 93.2, which represents a noticeable improvement compared with a commercial blue-chip + YAG:Ce WLED measured under identical experimental conditions. Furthermore, by utilizing the unique thermal response characteristics of Sm 3+ transitions, this material was explored for optical temperature sensing, achieving a maximum relative sensitivity of 2.06% K −1 . These results indicate that La 2 SrGa 4 Si 2 O 14 :Sm 3+ is a potential multifunctional material for high-CRI solid-state lighting and non-contact temperature sensing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
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