Maximizing the red emission of CaCO3:Eu3+ phosphors by using a Taguchi L9 orthogonal design

Candelario-Flores, L.; Miranda, Joan Reyes; Oliva, J.; Medina-Velazquez, D.Y.; Meza, M.A. Barrón; Garfias-García, Elizabeth; Garrido-Hernández, Aristeo; García, C.R.

doi:10.1016/j.jpcs.2021.110091

Cited by 4 publications

(3 citation statements)

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“…4b to give 3 main red emission bands observed at 537 nm, 593 nm, and 622 nm which corresponds to 5 D 1 → 7 F 1 , 5 D 0 → 7 F 1 , and D 0 → 7 F 2 transitions respectively which agrees with reports [24]. The most intense emission was observed to be 622 nm shows a red band due to the existence of the f-f transitions which was responsible for luminescence properties in trivalent rare earth ions (Eu 3+ ) [24] which is attributed to the dipole of 5 D 0 → 7 F 2 transition which is mainly by crystal environment and predominant emission with ions only occupies the sites with low symmetry [19]. The 593 nm is a strong magnetic and the intensity are strongly dependent on the Eu 3+ ion environment [24].…”

Section: Down-conversion Luminescence Properties Of Sla:eusupporting

confidence: 89%

“…The most intense emission was observed to be 622 nm shows a red band due to the existence of the f-f transitions which was responsible for luminescence properties in trivalent rare earth ions (Eu 3+ ) [24] which is attributed to the dipole of 5 D 0 → 7 F 2 transition which is mainly by crystal environment and predominant emission with ions only occupies the sites with low symmetry [19]. The 593 nm is a strong magnetic and the intensity are strongly dependent on the Eu 3+ ion environment [24]. The 537 nm is an electric and weak transition with absorptivity values reported to be less than 1 Lmol -1 cm -1 which occur due to the UV light [23].…”

Section: Down-conversion Luminescence Properties Of Sla:eumentioning

confidence: 99%

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A Novel Warm Red-Emission of SrLa0.9Eu0.1AlO4 Phosphor obtained by Combustion Method.

Etafo

2024

JER

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In this study, A novel warm redemitting phosphor Strontium Lanthanum Aluminate (SrLaAlO 4 :xEu ) doped with the trivalent Europium ions were synthesized via urea-based solution combustion method. The x mol% doping concentration of Eu 3+ was varied in x = 0.0, and 0.01 mol%. X-ray diffraction analysis show that all samples exhibit the reflected peaks of the tetragonal structure SrLaAlO 4 matching with the JCPDS No 24-1125 standard card. The SEM analysis show irregular grains for all samples with mean sizes which reduces from 0.996 to 0.909 µm. The optical band gap of 4.47 eV and refractive of 1.79 were obtained from the Tauc plots from the absorbance spectra. Photoluminescence spectra of the SrLaAlO 4 : 0.10Eu, under 279 nm excitation, show a very intense red emission peak band centered at 622 nm due to the 5 D 0 -7 F 2 transition of Eu 3+ . The CIE chromaticity color coordinates were calculated and found to have a color purity and CCT with 53.1 % and 2057 K respectively. All the results clearly indicate that Eu-doped SrLaAlO 4 phosphors can be used as a red color component for solid state lighting devices, especially for the fabrication of near-UV based white LEDs, bio-imaging, and labeling.

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Section: Down-conversion Luminescence Properties Of Sla:eusupporting

confidence: 89%

Section: Down-conversion Luminescence Properties Of Sla:eumentioning

confidence: 99%

A Novel Warm Red-Emission of SrLa0.9Eu0.1AlO4 Phosphor obtained by Combustion Method.

Etafo

2024

JER

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“…Lanthanide (e.g., Eu and Tb)-doped nanostructures are also a highly effective luminescent species and have been investigated extensively. It was demonstrated that the lanthanide doping of inorganic materials results in highly stable materials with large Stokes shifts, narrow emission peaks, and some of the longest photoluminescent lifetimes available [ 15 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]. QD-loaded inorganic structures have been used for numerous applications including but not limited to biosensing [ 25 ], as well as optical microresonators [ 26 ] and white light emitters [ 27 ].…”

Section: Introductionmentioning

confidence: 99%

Chiroptically Active Multi-Modal Calcium Carbonate-Based Nanocomposites

Donnelly,

Purcell-Milton,

Caffrey

et al. 2023

Nanomaterials

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The development of multimodal nano- and micro-structures has become an increasingly popular area of research in recent years. In particular, the combination of two or more desirable properties within a single structure opens multiple opportunities from biomedicine, sensing, and catalysis, to a variety of optical applications. Here, for the first time, we report the synthesis and characterization of multimodal chiroptically active CaCO3 nanocomposites. These composites have been prepared by a modified microemulsion method in the presence of an amino acid (cysteine). Following this, additional modalities have been introduced by loading the composites with luminescent nanoparticles or doping with Eu3+ ions. The luminescent composites have been produced by the incorporation of CuInZnS/ZnS or CdSe@ZnS/ZnS core/shell quantum dots, or via doping with trivalent europium. In this manner, we have produced chiroptically active composites with orange, green, and red luminescence. Overall, this work demonstrates the unique advantage and potential of our approach and new class of chiroptically active CaCO3 nanocomposites, which display tunable functionality to specific requirements via the incorporation of desired ions, nanoparticles, and chirality of the structure.

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Enhanced electrochemical behavior of naturally derived Eu3+: PEG/CaCO3 nanocomposite for supercapacitor application

Ramasamy,

Thenpandiyan,

Suresh

et al. 2024

Inorganic Chemistry Communications

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Maximizing the red emission of CaCO3:Eu3+ phosphors by using a Taguchi L9 orthogonal design

Cited by 4 publications

References 42 publications

A Novel Warm Red-Emission of SrLa0.9Eu0.1AlO4 Phosphor obtained by Combustion Method.

A Novel Warm Red-Emission of SrLa0.9Eu0.1AlO4 Phosphor obtained by Combustion Method.

Chiroptically Active Multi-Modal Calcium Carbonate-Based Nanocomposites

Enhanced electrochemical behavior of naturally derived Eu3+: PEG/CaCO3 nanocomposite for supercapacitor application

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