The single-band red upconversion luminescence from morphology and size controllable Er3+/Yb3+ doped MnF2 nanostructures

Bai, Zhenhua; Lin, Hui; Johnson, Jeffery L.; Gui, Sa Chu Rong; Imakita, Kenji; Montazami, Reza; Fujii, Minoru; Hashemi, Nastaran

doi:10.1039/c3tc32143f

Cited by 51 publications

(32 citation statements)

References 37 publications

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“…The quenching effect of Mn 2þ ions is probably ascribable to the depopulation of nonradiative energy transfer from the Er 3þ to Mn 2þ ( 2 H 9/2 / 4 S 3/2 / 4 T 1 ), especially at high doping concentration of Mn 2þ ions [72]. In our study, we find that the largest emission intensity can be achieved when UCNPs doping 2.5% Mn 2þ ions, the emission intensity of which is 1.49 times than that of undoped UCNPs [39,43,60,63]. And the red to green intensity ratio (I R /I G ) increases from 3.42 to 3.97.…”

Section: Structure Morphology and Luminescent Properties Of Uchns-pacontrasting

confidence: 41%

Multifunctional hollow CaF2:Yb3+/Er3+/Mn2+-poly(2-Aminoethyl methacrylate) microspheres for Pt(IV) pro-drug delivery and tri-modal imaging

et al. 2015

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Section: Structure Morphology and Luminescent Properties Of Uchns-pacontrasting

confidence: 41%

Multifunctional hollow CaF2:Yb3+/Er3+/Mn2+-poly(2-Aminoethyl methacrylate) microspheres for Pt(IV) pro-drug delivery and tri-modal imaging

et al. 2015

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“…Here, λ = 0.1540 nm, θ = 11.38 • and n is taken to be equal to 1. Herein, we obtain the interlayer spacing equaling 0.39 nm [51,52]. Furthermore, it can be observed that the phase concentration of graphene is much lower than that of graphite as observed in Figure 5c.…”

Section: X-ray Diffractionmentioning

confidence: 96%

Synthesis of Graphene Nanosheets through Spontaneous Sodiation Process

Thomas

Kavak

Hashemi

et al. 2018

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Abstract:Graphene is one of the emerging materials in the nanotechnology industry due to its potential applications in diverse areas. We report the fabrication of graphene nanosheets by spontaneous electrochemical reaction using solvated ion intercalation into graphite. The current literature focuses on the fabrication of graphene using lithium metal. Our procedure uses sodium metal, which results in a reduction of costs. Using various characterization techniques, we confirmed the fabrication of graphene nanosheets. We obtained an intensity ratio (I D /I G ) of 0.32 using Raman spectroscopy, interlayer spacing of 0.39 nm and our XPS results indicate that our fabricated compound is relatively oxidation free.

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“…These processes include cooperative energy transfer [19][20][21][22][23], energy migration [24,25], and cross energy relaxation [26]. For instance, paramagnetic Mn 2+ ions can be used to manipulate the cooperative energy transfer and adjust the fluorescence spectrum of (Yb 3+ , Er 3+ ) co-doped composites.…”

Section: Introductionmentioning

confidence: 99%

Strong tunability of cooperative energy transfer in Mn2+-doped (Yb3+, Er3+)/NaYF4 nanocrystals by coupling with silver nanorod array

et al. 2015

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Fluorescent rare-earth ions are useful for efficient energy transfer via multichannels with different properties. Tuning these transfer processes in functional rare-earth materials has attracted considerable attention to satisfy the various demands of diverse practical applications. In this study, strong tunabilities of cooperative energy transfer and nonlinear upconversion emissions are realized using (Yb 3+ , Er 3+ )/NaYF 4 nanocrystals with and without doped Mn 2+ ions by adopting a plasmonic nanocavity composed of a silver nanorod array. The plasmon nanocavity can not only increase the energy transfer between Mn 2+ and (Yb 3+ , Er 3+ ) but also significantly enhance the radiative emission. This reveals a prominent nonlinear gain in the nanocavity nanosystems. These observations suggest the prospective applications in the design and preparation of rare-earth nanocrystals with excellent tunabilities of multiple functionalities.

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The single-band red upconversion luminescence from morphology and size controllable Er3+/Yb3+ doped MnF2 nanostructures

Cited by 51 publications

References 37 publications

Multifunctional hollow CaF2:Yb3+/Er3+/Mn2+-poly(2-Aminoethyl methacrylate) microspheres for Pt(IV) pro-drug delivery and tri-modal imaging

Multifunctional hollow CaF2:Yb3+/Er3+/Mn2+-poly(2-Aminoethyl methacrylate) microspheres for Pt(IV) pro-drug delivery and tri-modal imaging

Synthesis of Graphene Nanosheets through Spontaneous Sodiation Process

Strong tunability of cooperative energy transfer in Mn2+-doped (Yb3+, Er3+)/NaYF4 nanocrystals by coupling with silver nanorod array

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