Comparison and analysis of Eu3+ luminescence in Y3Al5O12 and Y3Ga5O12 hosts material for red lighting phosphor

Yousif, A.; Som, Sudipta; Kumar, Vinod; Swart, H.C.

doi:10.1016/j.matchemphys.2015.09.042

Cited by 35 publications

(17 citation statements)

References 34 publications

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“…Meanwhile, the full width at half-maxima (fwhm) are ∼20 and ∼30 nm, respectively. It is reported that the CT band strongly depends on the nature of the ligands, which are the covalency of the Eu–O bond and the ligancy of Eu 3+ . Therefore, it is necessary to study the difference of the Eu–O bond covalency in YAG:Eu 3+ and YMAS:Eu 3+ .…”

Section: Resultsmentioning

confidence: 99%

“…Generally, Ω 2 is sensitive to the local crystal environment; a large Ω 2 value corresponds to the low symmetry site and the lower coordinate number of the Eu 3+ ions, as well as the short bond distance and high covalency of the Eu–O bond. ,, Therefore, the larger Ω 2 value means a lower symmetry site of Eu 3+ ions, shorter bond distance, and higher covalency of the Eu–O bond in YMAS:0.1Eu 3+ than in YAG:0.1Eu 3+ . For the covalency of the Eu–O bond, the conclusion is consistent with the computational results and calculation result of the Jørgensen formula.…”

Section: Resultsmentioning

confidence: 99%

“…For the covalency of the Eu–O bond, the conclusion is consistent with the computational results and calculation result of the Jørgensen formula. For the symmetry, as is known, the Y 3+ (Eu 3+ ) ions are located in D 2 sites in the YAG host, and on the basis of the branching rules of the 32 point groups and the above conclusions, the Y 3+ (Eu 3+ ) ions ought to occupy the C 2 even C 1 low-symmetry point groups in YMAS:Eu 3+ . Moreover, Ω 4 is related to the bulk property and the structural rigidity of the luminescent host lattice. , The Ω 4 values in YAG:0.1Eu 3+ and YMAS:0.1Eu 3+ are very approximate, which is reflected in the strongest 5 D 0 → 7 F 4 transition.…”

Section: Resultsmentioning

confidence: 99%

See 2 more Smart Citations

Study on the Local Structure and Luminescence Properties of a Y₂Mg₂Al₂Si₂O₁₂:Eu³⁺ Red Phosphor for White-Light-Emitting Diodes

et al. 2020

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Structure determines properties, and properties determine applications, which is an important ideology of natural sciences. For optical materials, it is vital to lucubrate the corresponding relationship between the local crystal structure and luminescence properties for their design, synthesis, and application. This work reports a newly designed Y2Mg2Al2Si2O12(YMAS):Eu3+ red phosphor, in which difunctional Eu3+ ion is used as a red-light activator and spectroscopic probe. The qualitative and quantitative studies on the relationship between the local crystal structure and the luminescence properties of YMAS:Eu3+ are performed experimentally and computationally, using the Y3Al5O12 (YAG):Eu3+ as contrast. Moreover, compared with YAG:Eu3+, the newly designed YMAS:Eu3+ has stronger luminescence, superior Commission Internationale de L’Eclairage chromaticity coordinates, a lower optimal doping concentration, and equally excellent thermal stability. The satisfactory color-rendering index of packaged white-light-emitting diodes demonstrates its potential performance as a red phosphor. Briefly, this work provides not only a new case for the study of the local crystal structure and luminescence properties but also a new possibility for the application of a red phosphor in solid-state lighting.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Study on the Local Structure and Luminescence Properties of a Y₂Mg₂Al₂Si₂O₁₂:Eu³⁺ Red Phosphor for White-Light-Emitting Diodes

et al. 2020

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“…There are small, but essential differences between the emission color of functionalized aerogels, xerogels and pure solid europium(III) phenanthroline nitrate, probably coming from different sites in the porous architecture of aerogels. In [19] small deviations of X-Y coordinates in europium doped inorganic oxides with a different doping concentration have been presented.…”

Section: Discussionmentioning

confidence: 97%

Preparation and luminescence of silica aerogel composites containing an europium (III) phenanthroline nitrate complex

Gutzov

Danchova

Kirilova

et al. 2017

Journal of Luminescence

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A simple two step procedure for the functionalization of hydrophobic silica aerogel microgranules with europium ions and / or 1,10-phenanthroline is demonstrated. The activation procedure is based on soaking aerogels in a europium nitrate solution, followed by functionalization with 1,10phenanthroline. The functionalized materials display strong red or blue emission at UV-excitation, coming from the formation of [Eu(phen) 2 ](NO 3) 3 or Si(IV)-1,10-phenathroline complexes in the porous system of the aerogels. The most probable site symmetry of the europium cation is C 2v confirmed by luminescence spectra analysis. Room temperature diffuse reflectance spectra and excitation / luminescence spectra are used to describe the optical properties of the hybrid composites. Excitation spectra prove an efficient energy transfer between 1,10phenanthroline and the Eu 3+ ion.

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“…Garnets are also well-known as a host family for optical applications; these compounds are based on the combination of a rare earth oxide and a metal oxide, the most representative materials of this group are Y 3 Al 5 O 12 (YAG) and Y 3 Ga 5 O 12 (YGG). YAG may be doped with Eu [ 17 ], Ce [ 18 ], or Nd [ 19 , 20 ] to enhance performance. It is important to highlight that Nd-YAG is one of the most important laser crystals for generating a 1.06-μm NIR emission.…”

Section: Introductionmentioning

confidence: 99%

Aluminate-Based Nanostructured Luminescent Materials: Design of Processing and Functional Properties

et al. 2021

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Interest in luminescent materials has been continuously growing for several decades, looking for the development of new systems with optimized optical properties. Nowadays, research has been focused on the development of materials that satisfy specific market requirements in optoelectronics, radioelectronics, aerospace, bio-sensing, pigment applications, etc. Despite the fact that several efforts have made in the synthesis of organic luminescent materials, their poor stability under light exposure limits their use. Hence, luminescent materials based on inorganic phosphors are considered a mature topic. Within this subject, glass, glass-ceramics and ceramics have had great technological relevance, depending on the final applications. Supposing that luminescent materials are able to withstand high temperatures, have a high strength and, simultaneously, possess high stability, ceramics may be considered promising candidates to demonstrate required performance. In an ongoing effort to find a suitable synthesis method for their processing, some routes to develop nanostructured luminescent materials are addressed in this review paper. Several ceramic families that show luminescence have been intensively studied in the last few decades. Here, we demonstrate the synthesis of particles based on aluminate using the methods of sol-gel or molten salts and the production of thin films using screen printing assisted by a molten salt flux. The goal of this review is to identify potential methods to tailor the micro-nanostructure and to tune both the emission and excitation properties, focusing on emerging strategies that can be easily transferred to an industrial scale. Major challenges, opportunities, and directions of future research are specified.

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Comparison and analysis of Eu3+ luminescence in Y3Al5O12 and Y3Ga5O12 hosts material for red lighting phosphor

Cited by 35 publications

References 34 publications

Study on the Local Structure and Luminescence Properties of a Y₂Mg₂Al₂Si₂O₁₂:Eu³⁺ Red Phosphor for White-Light-Emitting Diodes

Study on the Local Structure and Luminescence Properties of a Y₂Mg₂Al₂Si₂O₁₂:Eu³⁺ Red Phosphor for White-Light-Emitting Diodes

Preparation and luminescence of silica aerogel composites containing an europium (III) phenanthroline nitrate complex

Aluminate-Based Nanostructured Luminescent Materials: Design of Processing and Functional Properties

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Comparison and analysis of Eu3+ luminescence in Y3Al5O12 and Y3Ga5O12 hosts material for red lighting phosphor

Cited by 35 publications

References 34 publications

Study on the Local Structure and Luminescence Properties of a Y2Mg2Al2Si2O12:Eu3+ Red Phosphor for White-Light-Emitting Diodes

Study on the Local Structure and Luminescence Properties of a Y2Mg2Al2Si2O12:Eu3+ Red Phosphor for White-Light-Emitting Diodes

Preparation and luminescence of silica aerogel composites containing an europium (III) phenanthroline nitrate complex

Aluminate-Based Nanostructured Luminescent Materials: Design of Processing and Functional Properties

Contact Info

Product

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Study on the Local Structure and Luminescence Properties of a Y₂Mg₂Al₂Si₂O₁₂:Eu³⁺ Red Phosphor for White-Light-Emitting Diodes

Study on the Local Structure and Luminescence Properties of a Y₂Mg₂Al₂Si₂O₁₂:Eu³⁺ Red Phosphor for White-Light-Emitting Diodes