Effect of Tb3+ concentration in the visible emission of terbium-doped gadolinium oxysulfide microspheres

Hernández‐Adame, Luis; Palestino, Gabriela; Meza, O.; Hernández-Adame, Pablo Luis; Vega-Carrillo, Héctor René; Sarhid, Iyad

doi:10.1016/j.solidstatesciences.2018.07.021

Cited by 17 publications

(9 citation statements)

References 21 publications

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“…Figure 1 f show the photoluminescence (PL) spectra of the GOS phosphor. Under 280 nm excitation, sharp emissions ranging from 300 to 800 nm were observed for the GOS phosphor, which was due to transitions from 5 D 3,4 excited states to the 7 F J (J = 1–6) ground multiplets as assigned in the literature [ 1 , 21 ], with the ~544 nm green emission ( 5 D 4 → 7 F 5 transition) being the strongest. Among the three samples, GOS-1 μm had the strongest luminescence intensity, GOS-0.45 μm was the next, and GOS-11 μm was the weakest.…”

Section: Resultsmentioning

confidence: 68%

Size-Dependent Nonlinear Optical Properties of Gd2O2S:Tb3+ Scintillators and Their Doped Gel Glasses

Chen

Xie

et al. 2021

Molecules

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With the advancement of ultra-fast and high-energy pulsed laser output, lasers have caused serious harm to precision instruments and human eyes. Therefore, the development of optical limiting materials with a fast response, low optical limiting threshold, and high damage threshold are important. In this work, for the first time, it is reported that phosphors Gd2O2S:Tb3+(GOS) displays exceptional functionality in laser protection. GOS with sizes of 11 μm, 1 μm, and 0.45 μm are prepared. Based on the optical limiting and Z-scan technology systems under 532 nm and 1064 nm nanosecond laser excitation, the nonlinear optical properties of GOS are investigated. It is found that GOS exhibits outstanding optical limiting properties. In addition, the optical limiting response of GOS is size-dependent. Concerning the largest particle size, GOS has the best nonlinear optical response, while the precursor shows no nonlinear optical performance. Meanwhile, GOS doped gel glass also displays excellent optical limiting properties with high transmittance, which preliminarily validates the application of GOS and other scintillators in nonlinear optics and encourages more research to better realize the potential of GOS.

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Section: Resultsmentioning

confidence: 68%

Size-Dependent Nonlinear Optical Properties of Gd2O2S:Tb3+ Scintillators and Their Doped Gel Glasses

Chen

Xie

et al. 2021

Molecules

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“…Hernández-Adame et al [85] reported the synthesis of Gd 2 O 2 S:Tb 3+ . In this report, the authors studied the influence of the concentration of Tb 3+ in the luminescence intensity.…”

Section: Core-shell Systemsmentioning

confidence: 99%

An Overview of Gadolinium-Based Oxide and Oxysulfide Particles: Synthesis, Properties, and Biomedical Applications

et al. 2021

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In the last decade, the publications presenting novel physical and chemical aspects of gadolinium-based oxide (Gd2O3) and oxysulfide (Gd2O2S) particles in the micro- or nano-scale have increased, mainly stimulated by the exciting applications of these materials in the biomedical field. Their optical properties, related to down and upconversion phenomena and the ability to functionalize their surface, make them attractive for developing new probes for selective targeting and emergent bioimaging techniques, either for biomolecule labeling or theranostics. Moreover, recent reports have shown interesting optical behavior of these systems influenced by the synthesis methods, dopant amount and type, particle shape and size, and surface functionality. Hence, this review presents a compilation of the latest works focused on evaluating the optical properties of Gd2O3 and Gd2O2S particles as a function of their physicochemical and morphological properties; and also on their novel applications as MRI contrast agents and drug delivery nanovehicles, discussed along with their administration routes, biodistribution, cytotoxicity, and clearance mechanisms. Perspectives for this field are also identified and discussed.

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“…Eu 3+ ‐activated phosphors such as Y 2 O 3 :Eu 3+ , Y 2 (MoO 4 ) 3 :Eu 3+ , and KLa(MoO 4 ) 2 :Eu 3+ have been used as ~615 nm emitters 9–11 . Similarly, Tb 3+ ‐activated phosphors such as Y 2 O 3 :Tb 3+ , Y 2 SiO 5 :Tb 3+ , and Gd 2 O 2 S:Tb 3+ have been used as green‐emitting materials because of the strong 5 D 4 → 7 F 5 transition of Tb 3+ ions, which results in emission at ~545 nm 9,12,13 . In another case, the energy levels of Ce 3+ and Eu 2+ ions strongly interact with the host lattice, resulting in 4 f– 5 d transitions 8,14,15 .…”

Section: Introductionmentioning

confidence: 99%

“…7 F 5 transition of Tb 3+ ions, which results in emission at $545 nm. 9,12,13 In another case, the energy levels of Ce 3+ and Eu 2+ ions strongly interact with the host lattice, resulting in 4f-5d transitions. 8,14,15 In the Eu 2+ -activated phosphors, the emission occurs because of the transition from the 4f 6 5d 1 excited state to the 4f 7 ( 8 S 7/2 ) ground state.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence properties of Eu²⁺‐activated thiogallate phosphors

Cho,

Bok,

Huh

2023

Bulletin Korean Chem Soc

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This work analyzes the crystal structural properties and photoluminescence properties of six Eu2+‐activated thiogallates: CaGa2S4:Eu2+, SrGa2S4:Eu2+, EuGa2S4, BaGa2S4:Eu2+, Sr2Ga2S5:Eu2+, and Eu2Ga2S5. Photoluminescence parameters such as the absorption energy (Eabs), emission energy (Eem), zero‐phonon line energy (E0), Stokes shift (ΔS), and red shift (D) are discussed. This work is the first report on the photoluminescence parameters of these six Eu2+‐activated thiogallates and therefore provides important information about these materials.

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Effect of Tb3+ concentration in the visible emission of terbium-doped gadolinium oxysulfide microspheres

Cited by 17 publications

References 21 publications

Size-Dependent Nonlinear Optical Properties of Gd2O2S:Tb3+ Scintillators and Their Doped Gel Glasses

Size-Dependent Nonlinear Optical Properties of Gd2O2S:Tb3+ Scintillators and Their Doped Gel Glasses

An Overview of Gadolinium-Based Oxide and Oxysulfide Particles: Synthesis, Properties, and Biomedical Applications

Photoluminescence properties of Eu²⁺‐activated thiogallate phosphors

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Effect of Tb3+ concentration in the visible emission of terbium-doped gadolinium oxysulfide microspheres

Cited by 17 publications

References 21 publications

Size-Dependent Nonlinear Optical Properties of Gd2O2S:Tb3+ Scintillators and Their Doped Gel Glasses

Size-Dependent Nonlinear Optical Properties of Gd2O2S:Tb3+ Scintillators and Their Doped Gel Glasses

An Overview of Gadolinium-Based Oxide and Oxysulfide Particles: Synthesis, Properties, and Biomedical Applications

Photoluminescence properties of Eu2+‐activated thiogallate phosphors

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Photoluminescence properties of Eu²⁺‐activated thiogallate phosphors