Nano-crystals precipitation and upconversion luminescence properties in Er3+/Yb3+ co-doped fluoride phosphate glass-ceramics

Lou, Kai; Song, Zhiguo; Shang, Jihua; Yang, Zhen-Wen; Qiu, Jianbei

doi:10.1016/j.jnoncrysol.2010.11.117

Cited by 20 publications

(8 citation statements)

References 21 publications

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“…Equation (21) indicates that the population density N 2 of the 4 I 11/2 level is not dependent on the pump power when the ET2 process is highly efficient, which leads the pump-saturation of the UC green emission; the pump power dependence of N 4 decreases from N 4 / P 2 to P 1 which agrees well with the Fig. 6 measured UC green emission's slope 0.99.…”

Section: Uc Process Of 4 I 13/2 and Linear Decay Of 4 I 11/2supporting

confidence: 75%

Upconversion and pump saturation mechanisms in Er3+/Yb3+ co-doped Y2Ti2O7 nanocrystals

Feng-xiao

Song

Zhang

et al. 2014

Journal of Applied Physics

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Articles you may be interested inLuminescence thermometry below room temperature via up-conversion emission of Y2O3:Yb3+,Er3+ nanophosphors J.Intense green and red upconversion emission of Er3+,Yb3+ co-doped CaZrO3 obtained by a solution combustion reactionThe Er 3þ /Yb 3þ co-doped Y 2 Ti 2 O 7 nanocrystals were synthesized by the sol-gel method. X-ray diffraction, transmission electronic microscopy, and photoluminescence spectra were measured to verify the Y 2 Ti 2 O 7 nanocrystalline produced in the sample annealed at 800 C. The anomalous slopes of the fitted line in the log-log plots for upconversion emissions and the pump-saturation effect of near-infrared emission were observed in the nanocrystalline samples. A theoretical model of practical Er 3þ /Yb 3þ co-doped system based on the rate equations were put forward and explained the experimental phenomena well. V C 2014 AIP Publishing LLC.

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Section: Uc Process Of 4 I 13/2 and Linear Decay Of 4 I 11/2supporting

confidence: 75%

Upconversion and pump saturation mechanisms in Er3+/Yb3+ co-doped Y2Ti2O7 nanocrystals

Feng-xiao

Song

Zhang

et al. 2014

Journal of Applied Physics

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“…Recently, GCs have been further investigated because their luminescence properties may be increased by the crystalline environment around the RE ions [20,21,22,23]. Yu et al [24,25] reported an increase of about two orders of magnitude in the emission intensity of the Er 3+ /Yb 3+ co-doped phosphate GCs compared to the correspondent as prepared glasses.…”

Section: Introductionmentioning

confidence: 99%

Effect of Partial Crystallization on the Structural and Luminescence Properties of Er3+-Doped Phosphate Glasses

et al. 2017

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Er-doped phosphate glass ceramics were fabricated by melt-quenching technique followed by a heat treatment. The effect of the crystallization on the structural and luminescence properties of phosphate glasses containing Al2O3, TiO2, and ZnO was investigated. The morphological and structural properties of the glass ceramics were characterized by Field Emission-Scanning Electron Microscopy (FE-SEM), X-ray Diffraction (XRD), and micro-Raman spectroscopy. Additionally, the luminescence spectra and the lifetime values were measured in order to study the influence of the crystallization on the spectroscopic properties of the glasses. The volume ratio between the crystal and the glassy phases increased along with the duration of the heat treatment. The crystallization of the glass ceramics was confirmed by the presence of sharp peaks in the XRD patterns and different crystal phases were identified depending on the glass composition. Sr(PO3)2 crystals were found to precipitate in all the investigated glasses. As evidenced by the spectroscopic properties, the site of the Er3+ ions was not strongly affected by the heat treatment except for the fully crystallized glass ceramic which does not contain Al2O3, TiO2, and ZnO. An increase of the lifetime was also observed after the heat treatment of this glass. Therefore, we suspect that the Er3+ ions are incorporated in the precipitated crystals only in this glass ceramic.

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“…All diffraction peaks matched well with the standard data of hexagonal phase FAP (JCPDS 87‐2462). The crystallite size r can be estimated from the XRD patterns following the Scherrer equation:

r = \frac{λ \times 0.9}{β \times \cos θ},

where λ is the wavelength of the incident X‐ray radiation (Cu K α [λ = 0.154056 nm]), β is the full width at half maximum in radian, and θ is the diffraction angle . As shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

Spectral Properties of Pr³⁺‐Doped Transparent‐Glass‐Ceramic Containing Ca₅(PO₄)₃F Nanocrystals

et al. 2013

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A Pr3+ -doped transparent oxyfluoride glass-ceramic containing Ca 5 (PO 4 ) 3 F nanocrystals was prepared by melt quenching and subsequent thermal treatment. The crystallization phase and morphology of the Ca 5 (PO 4 ) 3 F nanocrystals were investigated by X-ray diffraction and transmission electron microscope, respectively. The volume fraction of the Ca 5 (PO 4 ) 3 F nanocrystals in the glass-ceramic is about 10% and the fraction of Pr 3+ ions incorporated into the Ca 5 (PO 4 ) 3 F nanocrystals is about 22%. The peak absorption cross sections at 435 and 574 nm increase up to 128% and 132% after crystallization, respectively. The peak stimulated emission cross sections of the 3 P 0 ?3 H 4 blue laser channel and 3 P 0 ?3 F 2 red laser channel for the glass-ceramic are 4.95 3 10 À20 and 29.8 3 10 À20 cm 2 , respectively. The spectral properties indicate that the glassceramic is a potential visible laser material.

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Nano-crystals precipitation and upconversion luminescence properties in Er3+/Yb3+ co-doped fluoride phosphate glass-ceramics

Cited by 20 publications

References 21 publications

Upconversion and pump saturation mechanisms in Er3+/Yb3+ co-doped Y2Ti2O7 nanocrystals

Upconversion and pump saturation mechanisms in Er3+/Yb3+ co-doped Y2Ti2O7 nanocrystals

Effect of Partial Crystallization on the Structural and Luminescence Properties of Er3+-Doped Phosphate Glasses

Spectral Properties of Pr³⁺‐Doped Transparent‐Glass‐Ceramic Containing Ca₅(PO₄)₃F Nanocrystals

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Nano-crystals precipitation and upconversion luminescence properties in Er3+/Yb3+ co-doped fluoride phosphate glass-ceramics

Cited by 20 publications

References 21 publications

Upconversion and pump saturation mechanisms in Er3+/Yb3+ co-doped Y2Ti2O7 nanocrystals

Upconversion and pump saturation mechanisms in Er3+/Yb3+ co-doped Y2Ti2O7 nanocrystals

Effect of Partial Crystallization on the Structural and Luminescence Properties of Er3+-Doped Phosphate Glasses

Spectral Properties of Pr3+‐Doped Transparent‐Glass‐Ceramic Containing Ca5(PO4)3F Nanocrystals

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Spectral Properties of Pr³⁺‐Doped Transparent‐Glass‐Ceramic Containing Ca₅(PO₄)₃F Nanocrystals