OPTIK
·
2017
·
IF 0.835
Renping Cao,Jijun Huang,Xiangfeng Ceng,Zuofu Hu,Ting Chen,Wen Hu,Xinqin Zhang
Ca 3 Nb 2 O 8 :Sm 3+ phosphor is synthesized by solid-state reaction method in air. Host Ca 3 Nb 2 O 8 emits blue light with excitation 260 and 314 nm, and its emission band peaking at ∼460 nm is attributed to the 3 T 1,2 → 1 A 1 transations in [Nb 2 O 8 6− ] group. Ca 3 Nb 2 O 8 :Sm 3+ phosphor with excitation 314 nm shows a systematically tunable emission by adjusting Sm 3+ ion concentration , and only emits reddish-orange light with excitation 407 nm. Excitation band indicates that Ca 3 Nb 2 O 8 :Sm 3+ phosphor may be effectively excited by (∼407 nm) near ultraviolet light-emitting diode chip. The optimal Sm 3+ ion concentration is ∼5 mol% in Ca 3 Nb 2 O 8 :Sm 3+ phosphor. Emission intensity of Ca 3 Nb 2 O 8 :Sm 3+ phosphor may be increased ∼1.4 times by co-doping Li + ions as charge compensator and fluxing agent roles. The experimental results will contribute to studying novel Sm 3+ -doped luminescent materials.
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 MATERIALS SCIENCE
·
2014
·Vol. 49
·期 6
·2672-2679
·
IF 2.305
Fan Xianzhong,Shang Kun,Sun Bing,Chen Lijian,Ai Shiyun
A Sm 3+ complex, tris-(2-thenoyltrifluoroacetone) mono-1,10-phenanthroline-Sm 3+ [Sm(TTA) 3 (Phen)], can be easily integrated in situ via covalent functionalization to surface-carboxylated graphene oxide (GO-COOH) from a ethanol solution. The Sm 3+ containing material has been comprehensively characterized via Fourier transform infrared spectra, X-ray photoelectron spectroscopy, UV–Vis absorption spectra, luminescence spectra, transmission electron microscopy, powder X-ray diffraction, thermogravimetric analysis (TG and DTG). The integration of rare earth complexes (RE) onto GO-COOH, as well as the individual nature of the hybrids, is confirmed. The GO-COOH with high load capacity can integrate more RE than GO. The brilliant optical properties of the GO-COOH-RE complex hybrids make them promising candidates applying in many practical fields, such as biomedical applications.
研究领域:
材料科学
·
光学
·
生物医学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Jianming Liu,Shengnan Liu,Ya Chen,Qiliang Zhao,Yajuan Zhao,Weidong Xiang,Xiaojuan Liang,Baodong Ren
Since being synthesized, CsPbX 3 (X = Cl, Br or I) quantum dots (QDs) have gained increased interest due to their superior performances in photovoltaic applications. Herein, Sm 3+ -doped CsPbBr 3 nanocrystallines (NCs) were successfully prepared in zinc borosilicate sodium (ZnO–B 2 O 3 –SiO 2 –Na 2 CO 3 , ZBSN) glass, and the as-prepared glass exhibited a strong red emission, which was attributed to the effects of the energy level transitions in Sm 3+ . Importantly, white light-emitting diodes (W-LEDs) were prepared by combining the glass with a blue InGaN chip, eliminating the need for a red phosphor to provide the red light, and white light was generated with a high colour rendering index (CRI: 82.6), a low correlated colour temperature (CCT: 4455 K) and colour coordinates in the white light region (0.3547, 0.3234). The glasses show excellent stability at 85 °C and 85% RH. Therefore, the Sm 3+ -doped CsPbBr 3 NCs glass can be used as a colour converter for application in lighting engineering.
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
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Renping Cao,Tengyu Huang,Jingheng Nie,Lei Zhang,Yuyu Chen,Lan Li,Bang Lan,Jing Wang
New tunable-color luminescent materials are getting a lot of attention. Double-doped activated ions are an important research method. Here, CaSrNb 2 O 7 :R 3+ (R 3+ = Sm 3+ , Bi 3+ , and Sm 3+ /Bi 3+ ) are synthesized by solid state method in the air. Phase purity and successful synthesis of samples are confirmed by X-ray diffractometer (XRD) patterns and energy disperse spectroscopy (EDS) diagram. The luminescence properties of samples are studied. CaSrNb 2 O 7 :Sm 3+ has an excitation spectrum due to the O 2- - Sm 3+ charge transfer band (CTB) and the 6 H 5/2 → 4 H 9/2 , 4 D 3/2 , 4 D 1/2 , 4 F 7/2 , and 4 I 11/2 transitions of Sm 3+ ion. The red-orange emission of CaSrNb 2 O 7 :Sm 3+ is observed because of the 4 G 5/2 → 6 H 5/2 , 6 H 7/2 , 6 H 9/2 , and 6 H 11/2 transitions of Sm 3+ ion. PLE spectrum of CaSrNb 2 O 7 :Bi 3+ comes from the metal-to-metal charge- transfer (MMCT) Bi 3+ - Nb 5+ and the 1 S 0 → 1 P 1 and 3 P 1 transitions of Bi 3+ ion. CaSrNb 2 O 7 :Bi 3+ shows blue emission due to the 3 P 1 → 1 S 0 transition of Bi 3+ ion. The excitation spectrum of CaSrNb 2 O 7 :Sm 3+ , Bi 3+ contains that of CaSrNb 2 O 7 :Bi 3+ and CaSrNb 2 O 7 :Sm 3+ . CaSrNb 2 O 7 :Sm 3+ , Bi 3+ with excitation at 314, 363, and 406 nm glows orange and red-orange, and red emission, respectively. We observe the energy transfer from Bi 3+ to Sm 3+ ions and the effect of Bi 3+ on luminescence properties of Sm 3+ ion by their spectra. The optimal Sm 3+ and Bi 3+ concentrations are confirmed by the concentration dependent spectra. The energy level diagrams of Sm 3+ and Bi 3+ are used to analyze the luminous mechanism. The results are conducive to the development of new Sm 3+ and Bi 3+ co-doped luminescent materials.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICA B-CONDENSED MATTER
·
2024
·
IF 2.8
Bingjie Han,Xinyu Chang,Haili Jiang,Yuhan Wang,Fengjun Tian,Kang Li,Sivagunalan Sivanathan,Xinghua Yang
Red inorganic phosphors are widely utilized in the field of artificial plant supplemental lighting. Nevertheless, their red light emission falls short of satisfying the plant's dual requirements for both deep-red and far-red light simultaneously. In this work, multiple red emission Sm 3+ and Sm 3+ -Mn 4+ activated CaGdMgNbO 6 (CGMNO) red phosphors were prepared by high-temperature solid-state reaction. The luminescence characteristics, thermal stability, energy transfer behaviour and optical temperature sensing properties were investigated. The 550–750 nm emission bands of CGMNO:Sm 3+ and CGMNO:Sm 3+ , Mn 4+ matched the absorption band of the plant. The inhibition of energy transfer between activated ions and the structural reconstruction of conduction band traps reveal the anomalous thermal quenching behavior of Sm 3+ ions at high temperatures. These results show that Sm 3+ -Mn 4+ co-activated CGMNO phosphors have potential applications in plant growth.
研究领域:
材料科学
·
植物学
✓ 已验证
产品关联
DOI
高影响因子
LUMINESCENCE
·
2018
·Vol. 33
·期 2
·438-442
·
IF 1.671
Ting Li,Zhijun Wang,Panlai Li,Shuchao Xu,Qiongyu Bai,Zhiping Yang
A novel tunable red emitting phosphor LiBaB 9 O 15 :Sm 2+ /Sm 3+ , Li + with broad excitation band was synthesized by a high temperature solid-state method. Luminescence properties were investigated in detail by luminescence, X-ray photoelectron spectroscopy (XPS) spectra and CIE chromaticity coordinates. XPS data confirmed that there were Sm 3+ in LiBaB 9 O 15 :Sm 3+ and Sm 2+ /Sm 3+ in LiBaB 9 O 15 :Sm 2+ /Sm 3+ , respectively. Spectral property of LiBaB 9 O 15 :Sm 3+ , LiBaB 9 O 15 :Sm 3+ /Sm 2+ and LiBaB 9 O 15 :Sm 2+ , Li + presented that the excitation band of Sm 3+ widened and the excitation band of Sm 2+ ranged from 350 to 450 nm. And the red light color is tunable with changing Li + concentration. The results indicated that LiBaB 9 O 15 :Sm 2+ /Sm 3+ , Li + may be promising red phosphor for white light emitting diodes.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2023
·
IF 3.8
Renping Cao,Jingyi Lin,Bang Lan,Fangrui Cheng,Ting Chen,Lan Li,Ru Liu,Jing Wang
Na 3 Sc 2 (PO 4 ) 3 :R (R = Bi 3+ , Sm 3+ , and Sm 3+ /Bi 3+ ) are successfully synthesized in air atmosphere. The high-temperature solid-state reaction method is used in this work. The X-ray diffractometer patterns confirm that all samples have the single pure phase Na 3 Sc 2 (PO 4 ) 3 . Na 3 Sc 2 (PO 4 ) 3 :Bi 3+ displays blue emission because of the Bi 3+ - Sc 3+ metal-to-metal charge-transfer and the 3 P 1 → 1 S 0 transition of Bi 3+ . Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ shows red-orange emission with four emission bands derived from the 4 G 5/2 → 6 H 5/2 (550 - 582 nm), 6 H 7/2 (582–625 nm), 6 H 9/2 (625–675 nm), and 6 H 11/2 (675–750 nm) transitions of Sm 3+ . The optimal Sm 3+ concentration in Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ is ∼8mol%. An adjustable color emission from blue to red-orange of Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ , Bi 3+ with excitation at 345 nm can be observed when the ratio between Sm 3+ and Bi 3+ ions is changed. Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ , Bi 3+ emits red–orange light under excitation 406 nm. The optimal Bi 3+ concentration in Na 3 Sc 2 (PO 4 ) 3 :8mol%Sm 3+ , Bi 3+ is ∼ 6mol%. The energy transfer from Bi 3+ to Sm 3+ in Na 3 Sc 2 (PO 4 ) 3 :Sm 3+ , Bi 3+ is verified by the spectral properties of samples. We discuss the influences of Bi 3+ or Sm 3+ concentration on luminescence properties of samples and analyze their luminous mechanism by energy level diagram. The experimental results of paper are useful for the research of new Bi 3+ and Sm 3+ doped phosphors.
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 MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 21
·1-15
·
IF 2.8
Yang Chong,Long Juling,Li Bin,Ma Rongbo,Cao Bin,Huang Weichao
A series of Sr 3 LiSbO 6 : Mn 4+ and Sr 3 LiSbO 6 : Mn 4+ , Sm 3+ red phosphors were synthesized using the high-temperature solid-state method. The phase, luminescence properties, and thermal stability of these phosphors were thoroughly investigated. The Sr 3 LiSbO 6 : Mn 4+ phosphors exhibited a strong far-red emission band ranging from 650 to 750 nm centered at 693 nm, which is attributed to the 4 E 2g → 4 A 2g transition of Mn 4+ . To further broaden the emission spectra of the Sr 3 LiSbO 6 : Mn 4+ phosphors, doping with Sm 3+ ions as a co-activator was performed. The Sr 3 LiSbO 6 : Mn 4+ , Sm 3+ phosphors exhibited two emission bands located at 601 nm and 693 nm (red and far red), which are well-matched with the absorption bands of phytochromes Red (P R) and phytochromes Far-Red (P FR) . Additionally, the emission intensity and thermal stability of the phosphors were improved. Sr 3 LiSbO 6 : Mn 4+ emits far-red light in the range of 650 nm-750 nm, while Sr 3 LiSbO 6 : Mn 4+ , Sm 3+ emits red light in the range of 500 nm-750 nm. In the context of Sr 3 LiSbO 6 : Mn 4+ , Sm 3+ , we designed a LED lamp for plant growth and carried out experiments on plant seed germination. The findings from these experiments demonstrate the positive impact of red LEDs on plant growth and development. Additionally, our results suggest the potential application of red phosphors with Sr 3 LiSbO 6 : Mn 4+ , Sm 3+ in plant growth.
研究领域:
材料科学
·
植物学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RARE EARTHS
·
2023
·
IF 4.9
Danyu Zhang,Yuxuan Luo,Junyu Chen,Lianjie Li,Hai Guo
Dual-excitation and dual-emission Y 4 GeO 8 :Bi 3+ ,Sm 3+ phosphors were manufactured by traditional solid-phase sintering technique. The X-ray diffraction, morphology, photoluminescence, energy transfer process and temperature sensing properties of Y 4 GeO 8 :Bi 3+ ,Sm 3+ samples were comprehensively evaluated. The Y 4 GeO 8 :Bi 3+ ,Sm 3+ phosphors exhibit characteristic emissions of Bi 3+ ( 3 P 1 → 1 S 0 ) and Sm 3+ ( 4 G 5/2 → 6 H) under both 290 and 347 nm excitations. In fluorescence intensity ratio and Commission International de L'Eclairage coordinates modes, Y 4 GeO 8 :Bi 3+ ,Sm 3+ samples present excellent temperature measurement performance. The maximum relative sensitivity ( S r-max ) values of the former are 1.55 %/K (460 K, 290 nm excitation) and 0.82 %/K (506 K, 347 nm excitation). The S r-max ( x ) values of the latter are 0.21 %/K (437 K, 290 nm excitation) and 0.15 %/K (513 K, 347 nm excitation). These results illustrate that Y 4 GeO 8 :Bi 3+ ,Sm 3+ phosphors can be used as a candidate material for a dual-mode optical thermometer under dual-excitation.
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
·
2022
·
IF 6.371
Xiaopeng Hu,Anlin Zhang,Rong Tang,Xiaoyue Jin,Junzhi Che,Xuan Ouyang,Chang Zhou,Lianwu Xie,Bin Deng,Ruijin Yu
A series of reddish-orange emitting Ca 2 InNbO 6 :Sm 3+ (CINO:Sm 3+ ) phosphors for white light-emitting diodes (w-LEDs) were synthesized using a high-temperature solid-state technique. The synthesized CINO:Sm 3+ phosphors are pure phases with monoclinic structures. The optimal Sm 3+ doping concentration is 0.02 mol, and concentration quenching is due to the dipole-dipole interaction. Upon 407 nm excitation, the as-prepared CINO:Sm 3+ phosphors exhibited strong reddish-orange emission around 602 nm, attributed to the 4 G 5/2 → 6 H 7/2 transition of Sm 3+ . Surprisingly, the CINO:Sm 3+ phosphors revealed an abnormal thermal quenching (ATQ) phenomenon, and when the temperature of the phosphors was raised to 380 K, their emission intensity increased by more than 15%. The CINO:0.02Sm 3+ phosphor had a high color purity (98.9%) and reddish-orange chromaticity coordinates (0.608, 0.388). Meanwhile, the manufactured w-LED demonstrated a good color rendering index ( R a = 93), decent CCT (5752 K), and Commission International de l′Eclairage (CIE) chromaticity coordinates (0.327, 0.335). The experimental results demonstrated the superiority of the CINO:Sm 3+ phosphors 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
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2022
·Vol. 106
·期 2
·1287-1298
·
IF 4.186
Xiaofeng Zhao,Yuancheng Teng,Yuxiang Li,Xiayu Zheng,Qiuyu Zheng,Rui Ma,Guangyuan Liu,Yang Liu,Rajeev Ahuja,Wei Luo
Rhabdophane has been considered an important permeable reactive barrier to isolate groundwater radionuclides, and evaluating its precipitation response to different species of radionuclide in acid solutions is critical. In this work, the effects of pH values on the precipitation behavior of Nd 3+ and Sm 3+ into La-rhabdophane are systematically investigated. Some specific issues such as ions removal, precipitation reaction kinetics, and crystal growth affected ions incorporation are discussed in detail, along with uncovering the veil of the Ln (La, Nd, and Sm) leaching mechanism of associated La 0.666 Nd 0.167 Sm 0.167 PO 4 monazite ceramic based on dissolution experiments and density functional theory. The results reveal that Nd 3+ and Sm 3+ can be removed more than 98% in pH = 1 solution within 12 h, whereas uneven precipitation process to form unexpected stoichiometric ratio of rhabdophane has been observed in 30–50 nm short crystal. Grain growth effects based on spark plasma sintering can contribute to homogenize the materials composition with obtaining La 0.666 Nd 0.167 Sm 0.167 PO 4 monazite ceramics. Furthermore, the binding energy of Ln–O in (1 0 0) surface of monazite plays an important role in controlling the leaching stability of Ln 3+ , associated with the leaching activities are energetically favorable in the order of La > Nd > Sm for La 0.666 Nd 0.167 Sm 0.167 PO 4 monazite.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Shuang-Yin Zhu,Dan Zhao,Rui-Juan Zhang,Qing-Xia Yao,Wen Liu
Researches on fluorescence intensity ratio (FIR) based temperature sensors have become more and more popular in recent years. Herein, we co-doped Pb 2+ and Sm 3+ into the host material Ba 2 MgY 2 (BO 3 ) 4 (BMYB) to prepare a new series of phosphors. The Pb 2+ activated phosphor BMYB:0.03 Pb 2+ presents a wide blue emission band centered at 416 nm under 278 nm laser excitation with internal quantum efficiency of 46%. In the presence of both Pb 2+ and Sm 3+ , energy transfer will occur between them, resulting in tunable color emission. Besides, the phosphor has an absolute sensitivity of 0.96% K −1 at 575 K, which makes it an excellent candidate for temperature sensing. These findings suggest that prepared phosphor is a potential candidate for color tunable phosphor and temperature sensing material.
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）