Doping effect of Tb 3+  ions on luminescence properties of Y 3 Al 5 O 12 :Cr 3+  phosphor

Skruodiene, Monika; Misevicius, Martynas; Sakalauskaitė, Marija; Katelnikovas, Artūras; Skaudžius, Ramūnas

doi:10.1016/j.jlumin.2016.07.041

Cited by 21 publications

(3 citation statements)

References 31 publications

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“…By substituting a simple composition, weak crystal strengths can be created for Cr 3+ due to the abundance of coordination environments. The emission spectrum of Cr 3+ ions tuning with various compositions due to different crystal fields associated with different compositions ( Liu et al, 2015 ; Katayama et al, 2016 ; Skruodiene et al, 2016 ; Xu et al, 2017 ; Malysa et al, 2018 ; Zhang et al, 2018 ; Skruodiene et al, 2019 ; Wu et al, 2021 ). To understand the persistent luminescence of Cr 3+ dopants, Katayama et al used the electron trapping theory to detect a strong emission in YAG:Cr 3+ at 690 nm from a 2 E→ 4 A 2 transition ( Katayama et al, 2016 ).…”

Section: Photoluminescence Propertiesmentioning

confidence: 99%

The developments of cyan emitting phosphors to fulfill the cyan emission gap of white-LEDs

Khan,

Chen

et al. 2023

Front. Chem.

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Future generations of solid-state lighting (SSL) will prioritize the development of innovative luminescent materials with superior characteristics. The phosphors converted into white light-emitting diodes (white LEDs) often have a blue-green cavity. Cyan-emitting phosphor fills the spectral gap and produces “full-visible-spectrum lighting.” Full-visible spectrum lighting is beneficial for several purposes, such as light therapy, plant growth, and promoting an active and healthy lifestyle. The design of cyan garnet-type phosphors, like Ca2LuHf2Al3O12 (CLHAO), has recently been the subject of interest. This review study reports a useful cyan-emitting phosphor based on CLHAO composition with a garnet structure to have a cyan-to-green emitting color with good energy transfer. It could be employed as cyan filler in warm-white LED manufacturing. Due to its stability, ability to dope with various ions suitable for their desired qualities, and ease of synthesis, this garnet-like compound is a great host material for rare-earth ions. The development of CLHAO cyan-emitting phosphors has exceptionally high luminescence, resulting in high CRI and warm-white LEDs, making them a viable desire for LED manufacturing. The development of CLHAO cyan-emitting phosphors with diverse synthesis techniques, along with their properties and applications in white LEDs, are extensively covered in this review paper.

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Section: Photoluminescence Propertiesmentioning

confidence: 99%

The developments of cyan emitting phosphors to fulfill the cyan emission gap of white-LEDs

Khan,

Chen

et al. 2023

Front. Chem.

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“…However, the most common preparation technique is coprecipitation method starting from soluble salts of the metals. Sol-gel synthesis route for mixed metal oxides and related compounds have some benefits over other methods such as simplicity, synthesis at low temperatures, effectiveness, suitability for different systems and cost efficiency [24][25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Sol-Gel Synthesis and Characterization of Non-Substituted and Europium- Substituted Layered Double Hydroxides Mg3/Al1-xEux

Smalenskaite

Sen²,

Salak

et al. 2017

CIC

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The Mg/Al layered double hydroxides (LDHs) were successfully synthesized by novel aqueous sol-gel method. A series of europium-substituted layered double hydroxides (Mg/Al/Eu LDHs) were also synthesized using the same sol-gel processing. The Eu 3+ substitution effects were investigated in the Mg3/Al1-xEux system by changing the amount of Eu 3+ in the crystal lattice from 0.05 to 10 mol%. The samples obtained were characterized by X-ray diffraction (XRD) analysis, Fourier Transform Infrared spectroscopy (FT-IR), thermogravimetric (TG) analysis, scanning electron microscopy (SEM) and fluorescence spectroscopy (FLS). The results revealed that europium enters into a hydrotalcite structure containing Mg 2+ and Al 3+ cations in the brucite-like layers.

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“…The solution was evaporated at the same temperature, and the obtained gels were dried at 140 C for 24 h in the drying furnace. To remove the organic residue and for all powders to remain amorphous, the compounds were heated at 600 C for 2 h under air [14][15][16].…”

mentioning

confidence: 99%

Synthesis and investigation of novel boron‐ and magnesium‐doped YAG:Ce and LuAG:Ce phosphor ceramics

Inkrataite,

Skruodiene,

Skaudzius

2024

Luminescence

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YAG:Ce and LuAG:Ce ceramics are widely used as scintillator materials that convert high‐energy radiation into visible light. For the practical application of such compounds, short decay times are a necessity. One way of shortening the existing decay times even more is to change the local environment of emitting ions by means of doping the matrix with additional elements, for example, boron or magnesium. Furthermore, boron ions also can help absorb gamma rays more efficiently, therefore improving overall applicability. Due to the aforementioned reasons, YAG and LuAG ceramics doped with cerium, boron, and magnesium were synthesized. Initial amorphous powders have been obtained by means of sol–gel synthesis and pressed into pellets under isostatic pressure and finally calcinated to form crystalline ceramics. The effects of boron and magnesium doping on the morphological, structural, and luminescence properties were investigated. The key results showed that doping with boron has indeed shortened the decay times of the garnet pellets. Overall, boron doping of ceramics is a relatively new research area; however, it is rather promising as it helps both to improve the luminescence properties and to increase particle growth rate.

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Doping effect of Tb 3+ ions on luminescence properties of Y 3 Al 5 O 12 :Cr 3+ phosphor

Cited by 21 publications

References 31 publications

The developments of cyan emitting phosphors to fulfill the cyan emission gap of white-LEDs

The developments of cyan emitting phosphors to fulfill the cyan emission gap of white-LEDs

Sol-Gel Synthesis and Characterization of Non-Substituted and Europium- Substituted Layered Double Hydroxides Mg3/Al1-xEux

Synthesis and investigation of novel boron‐ and magnesium‐doped YAG:Ce and LuAG:Ce phosphor ceramics

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