Up-conversion white emission and other luminescence properties of a YAG:Yb2O3·Tm2O3·Ho2O3@SiO2 glass-nanocomposite

Kłonkowski, Andrzej M.; Kukliński, B.; Kubus, Mariusz; Ryl, Jacek; Szczodrowski, Karol; Wileńska, Dorota; Meyer, H.‐Jürgen

doi:10.1039/c8ra00118a

Cited by 2 publications

(3 citation statements)

References 35 publications

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“…Due to their broad absorption bands in the visible range, Cr +3 and Ce +3 have been proposed to create a solar powered Nd : YAG laser for applications in space and enhance the performance of photovoltaic cells . Eye‐safe lasers and white light emitting devices have been realized by the excitation of Yb +3 and efficient energy transfers to other lanthanides, such as Er +3 , Tm +3 and Ho +3 …”

Section: Introductionmentioning

confidence: 99%

“…[13] Eye-safe lasers [12] and white light emitting devices have been realized by the excitation of Yb + 3 and efficient energy transfers to other lanthanides, such as Er + 3 , Tm + 3 and Ho + 3 . [11,14] The fabrication of multi-doped ceramics includes two stages, namely, powder synthesis and its densification. Synthesis of the doped powder generally is based on a sol-gel approach, while, densification may be performed by advanced sintering techniques, such as spark plasma sintering (SPS).…”

Section: Introductionmentioning

confidence: 99%

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Photoluminescence of Doped YAG Transparent Ceramics Fabricated by Spark Plasma Sintering

Wagner

Ratzker

Kalabukhov

et al. 2019

Israel Journal of Chemistry

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Doped transparent ceramics have potential for a wide range of optical applications derived from their easily controllable fluorescence properties. The aim of this contribution is to present and discuss an effective fabrication method for doped transparent yttrium aluminum garnet ceramics. The powder synthesis route was adapted from common co‐precipitation methods and the powder densification was performed by spark plasma sintering. Parameters of the fabrication process were optimized for different lanthanide dopants in order to obtain highly transparent single‐ and multi‐doped ceramics. The photoluminescence properties of the samples were measured and discussed. The use of lithium fluoride as a sintering additive was confirmed to be favorable and post‐sintering heat treatments were shown to be necessary for certain dopants. Finally, the photoluminescence lifetime of dopants in a multi‐doped sample were measured and the energy transfer efficiency between dopants was determined.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Photoluminescence of Doped YAG Transparent Ceramics Fabricated by Spark Plasma Sintering

Wagner

Ratzker

Kalabukhov

et al. 2019

Israel Journal of Chemistry

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“…The interest in upconverting yttrium aluminum nanoparticles is increasing (Diaz-Torres et al, 2005;Li et al, 2005;Liu et al, 2007;Jain et al, 2018;Kamińska et al, 2020) because these materials can find applications in a wide variety of fields such as biomedicine, encoding, sensors, energy, security, and so on (Van der Ende et al, 2009;Chen and Xiaojun Zhao, 2012;Chen et al, 2014;Wang et al, 2015;Zhou et al, 2015;Kłonkowski et al, 2018). In this context, there is plenty of room for new materials based on lanthanide-doped YAG nanogarnets with upconversion properties.…”

Section: Introductionmentioning

confidence: 99%

Up-Converting Lanthanide-Doped YAG Nanospheres

et al. 2020

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The development of lanthanide-doped Y 3 Al 5 O 12 (Ln:YAG) garnet nanostructures is a hot topic in the field of inorganic nanophosphors due to the current interest in developing small nanoparticles for solid-state lighting (SSL), displays, lasers and scintillation applications. In this study, we report the preparation of homogeneous Ln:YAG (Ln: Ho/Yb ions) nanospheres through a combined two-steps coprecipitationsolvothermal synthesis at low temperature. The crystal growth takes place in ethylene glycol, which is an inexpensive, non-toxic and easily available solvent. Monodisperse and crystalline spherical YAG particles of 80 nm in diameter were obtained. Furthermore, the protocol can be extended to other compositions (Tb/Yb, Tm/Yb.. .) to explore different luminescent properties, without affecting the morphology of the material, indicating the robustness and practical utility of the reported methodology. Thermal treatment of the nanogarnets at 1200 • C is necessary for making materials optically active upon both UV and NIR excitation. The spherical morphology of annealed samples is preserved, what helps their further dispersion in solvents, barbotines, inks or printing vehicles. The lanthanide-doped nanogarnets exhibited the characteristic blue, green and red emissions from lanthanide upconversion photoluminescence (UCPL) upon NIR excitation. The UCPL mechanism was studied and CIE chromate coordinates were obtained. These nanogarnets were further evaluated as functional ceramic phosphors by incorporating them into commercial glazes. The materials exhibited an exceptional chemical stability in a harsh medium such as a fused glaze. Consequently, the visible emissions of the nanoparticles were transferred to the whole glass matrix, thus providing a functional glaze that emits intense blue and green light upon NIR excitation. These luminescent nanogarnets have promising applications in smart enamels, but can also be useful for lighting displays (white LEDs.. .), smart paintings or plastics, and anti-counterfeiting systems.

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Up-conversion white emission and other luminescence properties of a YAG:Yb₂O₃·Tm₂O₃·Ho₂O₃@SiO₂ glass-nanocomposite

Abstract: We present a glass-nanocomposite of the type YAG:YB3+, Tm3+, Ho3+@SiO2 as an alternative white phosphor based on up-conversion effect.

Cited by 2 publications

References 35 publications

Photoluminescence of Doped YAG Transparent Ceramics Fabricated by Spark Plasma Sintering

Photoluminescence of Doped YAG Transparent Ceramics Fabricated by Spark Plasma Sintering

Up-Converting Lanthanide-Doped YAG Nanospheres

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