Concentration dependent spectroscopic behavior of Sm3+-doped sodium fluoro-phosphates glasses for orange and reddish-orange light emitting applications

Jlassi, I.; Mnasri, S.; Elhouichet, Habib

doi:10.1016/j.jlumin.2018.03.023

Cited by 45 publications

(17 citation statements)

References 87 publications

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“…It is known that the concentration quenching or surface quenching would reduce the lifetime of emission. − The lifetime of red and green emissions under 808 nm excitation for the core only and core@shell nanoparticles were further detected. For the core NaYF 4 : x %Er, the red UCL emission lifetime reduced from 450 to 326 μs with Er 3+ concentration increased from 5 to 100% (Figure a), while the green UCL emission lifetime was reduced from 530 to 330 μs (Figure S6).…”

Section: Resultsmentioning

confidence: 97%

Highly Erbium-Doped Nanoplatform with Enhanced Red Emission for Dual-Modal Optical-Imaging-Guided Photodynamic Therapy

Mao

Xiao

et al. 2018

Inorg. Chem.

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Generally, luminescence quenching at high doping concentrations typically limits the concentration of doped ions in the lanthanide material to less than 0.05−20 mol %, and this is still a major hindrance in designing nanoplatforms with improved brightness. In this research, a nanoplatform capable of dual-modal imaging and synergetic antitumor cells therapy was designed. NaYF 4 :x%Er@NaXF 4 (x = 5, 25, 50, and 100; X = Lu and Y) core@shell nanoparticles with Er 3+ ion concentration up to 100 mol % were synthesized, and the luminescence properties under near-infrared (NIR) excitation were detected. The results show the strong coupled of surface and concentration quenching effects in upconversion nanoparticles (UCNP). Upconversion luminescence (UCL) and NIR-II emission intensity increased with negligible concentration quenching effect under 980 and 800 nm NIR lasers because of the growth of epitaxial shells. Therefore, the enhanced red luminescence transfers energy to photosensitizer ZnPc as the photodynamic therapy (PDT) agent for tumor inhibition efficacy.

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Section: Resultsmentioning

confidence: 97%

Highly Erbium-Doped Nanoplatform with Enhanced Red Emission for Dual-Modal Optical-Imaging-Guided Photodynamic Therapy

Mao

Xiao

et al. 2018

Inorg. Chem.

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“…Seven excitation peaks centered at 364, 379, 407, 420, 442, 467, and 481 nm could be assigned to the characteristic electron transitions of Sm 3þ from ground state 6 H 5/2 to excited state 4 D 3/2 , 6 P 7/2 , 6 P 3/2 , 6 P 5/2 , 4 G 9/2 , 4 I 13/2 , and 4 I 11/2 , respectively. [34] The main excitation peak centered at 407 nm indicates that the KSN-xSm powders could be well excited via the blue light.…”

Section: Microstructuresmentioning

confidence: 99%

Microstructures and Luminescent Properties of Sm³⁺‐Doped KSr₂Nb₅O₁₅ Prepared by Molten Salt Synthesis Method

Cao

Feng

Chen

et al. 2022

Physica Status Solidi (a)

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Recently, photochromic ceramics with luminescence modulation behavior gradually developed into a hot point in inorganic materials, and the coupling between photochromic and luminescent properties will enhance the readout rate of information and convenience. [1,2] Mainstream photochromic systems include (K 0.5 Na 0.5 )NbO 3 (KNN), [3] Na 0.5 Bi 2.5 Nb 2 O 9 (NBN), [4] Na 0.5 Bi 0.5 TiO 3 (NBT), [5] SrSnO 4 (SS), [6] BaMgSiO 4 (BMS), [7] PbWO 4 (PWO), [8] and their compounds. [9,10] Due to the stable and excellent luminescence properties of rare-earth ions dopants, [11][12][13] most of the inorganic photochromic compounds relied on the introduction of rare-earth activator to obtain luminescence properties, and realized the luminescence modulation by the resonance energy transfer from luminescent center to photochromic center. [3][4][5][6][7][8][9] KSr 2 Nb 5 O 15 (KSN) lead-free ferroelectric materials exhibit excellent multifunctional features, including dielectric, ferroelectric, thermoelectric, electro-optic, photocatalytic, and photoluminescent, photochromic areas. [14][15][16][17] Due to the typically tetragonal tungsten bronze (TTB) structure, doping modification of KSN can be flexibly executed, and there are abundant sites available for occupying with alkali, alkali-earth, and rare-earth cations. [18] The photochromic effects of KSN ceramics were reported in our previous work in 2019. [17] The absorbance (and reflectivity) of KSN ceramics could be reversibly changed by alternating the light irradiation (395 nm) and thermal treatment, which exhibit various potential applications in optical information storage and recording, optical antifake, and sensors. [7,19,20] For tungsten bronze type host, the luminescent properties of Eu 3þ -doped NaSr 2 Nb 5 O 15 , [21] Dy 3þ -doped KBa 2 Nb 5 O 15 , [22] and RE 3þ (RE ¼ La, Pr, Nd)-doped KSr 2 Nb 5 O 15 [16] have been reported, and these systems exhibited the predominance in the charge transfer transition between rare-earth activator and hosts, and good luminescent emission properties. Moreover, compared with other systems, the KSN-based materials possess the TTB type structure and significant anisotropy on the optical properties, including photochromic, luminescent, and luminescence modulation properties. [23] Based on these features, the KSNbased textured ceramics with obvious grain orientation have

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“…It can be seen in FIGURE 1 that there are 14 centered absorption bands at 341, 362, 377, 403, 439, 475, 947, 1080, 1234, 1376, 1476, 1520, 1583, 2022 nm corresponding to the transitions from 6 H5/2 to 4 D7/2 , 4 D3/2 , 4 D1/2 , 4 F7/2 , 4 G9/2 , 4 I11/2 , 6 F11/2 , 6 F9/2, 6 F7/2 , 6 F5/2 , 6 F3/2 , 6 H15/2 , 6 F1/2 , 6 H13/2. The most striking Sm2O3 ion absorption is 403 and 1234 nm in the Vis and NIR regions and the intensity of the absorption band is directly proportional to the concentration of rare earth ions where the absorption band increases with increasing Sm2O3 concentration [6,[17][18][19][20]. Emission Spectra FIGURE 2 shows the excitation spectrum of the Sm 3+ doped borate glasses measured at the wavelength of 300-550 nm monitored at 599 nm emission.…”

Section: Absorption Propertiesmentioning

confidence: 99%

Spectroscopic and Radiative Properties of Sm3+ Doped Sodium-Lead-Zinc-Lithium-Borate Glasses

Rajagukguk

Simamora

et al. 2021

SPEKTRA

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The glasses with a composition of (65 - x) B2O3 – 5ZnO – 5Li2O – 15 Na2O – 10PbO – x Sm2O3 (x = 0.0; 0.05; 0.1; 0.5; 1.0; 2.0 and 4.0 mol.%) which has been prepared using the melt quenching technique (1100oC for 3 hour). The spectroscopic properties can be determined by investigating the absorption, excitation, and emission spectra of a glass sample. There are 14 centered absorption bands starting from 6H5/2. The excitation spectrum of the Sm3+ doped borate glasses was measured at the wavelength of 300-550 nm which is the strongest intensity (4F7/2 at 403 nm) used as the excitation wavelength to measure the glass emission spectrum. The emission peaks transition starts from 4G5/2. The Judd-Ofelt theory has been applied to the absorption spectrum of Sm3+ doped borate glass to estimate the intensity parameters (Ωλ, λ = 2, 4 and 6) which are then used to calculate the radiative properties. The energy of the optical bandgap is in the range 3.85-3.77 eV for direct transitions and 3.42 - 4.22 eV for indirect transitions. The decay times obtained were 3.42, 3.99, 3.98, 2.96, 1.67, 1.48 ms for 0.05 - 4.00 mol%. Using the CIE chromaticity diagram for borate glass it can be determined that the glass from this work has a high performance for use as an orange emitting material application.

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Concentration dependent spectroscopic behavior of Sm3+-doped sodium fluoro-phosphates glasses for orange and reddish-orange light emitting applications

Cited by 45 publications

References 87 publications

Highly Erbium-Doped Nanoplatform with Enhanced Red Emission for Dual-Modal Optical-Imaging-Guided Photodynamic Therapy

Highly Erbium-Doped Nanoplatform with Enhanced Red Emission for Dual-Modal Optical-Imaging-Guided Photodynamic Therapy

Microstructures and Luminescent Properties of Sm³⁺‐Doped KSr₂Nb₅O₁₅ Prepared by Molten Salt Synthesis Method

Spectroscopic and Radiative Properties of Sm3+ Doped Sodium-Lead-Zinc-Lithium-Borate Glasses

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Concentration dependent spectroscopic behavior of Sm3+-doped sodium fluoro-phosphates glasses for orange and reddish-orange light emitting applications

Cited by 45 publications

References 87 publications

Highly Erbium-Doped Nanoplatform with Enhanced Red Emission for Dual-Modal Optical-Imaging-Guided Photodynamic Therapy

Highly Erbium-Doped Nanoplatform with Enhanced Red Emission for Dual-Modal Optical-Imaging-Guided Photodynamic Therapy

Microstructures and Luminescent Properties of Sm3+‐Doped KSr2Nb5O15 Prepared by Molten Salt Synthesis Method

Spectroscopic and Radiative Properties of Sm3+ Doped Sodium-Lead-Zinc-Lithium-Borate Glasses

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Microstructures and Luminescent Properties of Sm³⁺‐Doped KSr₂Nb₅O₁₅ Prepared by Molten Salt Synthesis Method