Optical spectra of Dy3+-doped GdVO4 and Ca3Sc2Ge3O12 crystals and evaluation of the Ω2/Ω6 ratio as a quality factor for the classification of Dy3+-activated crystalline hosts

Cavalli, E.

doi:10.1016/j.optmat.2016.04.008

Cited by 10 publications

(3 citation statements)

References 27 publications

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“…The radiation lifetimes of 4 F 9/2 manifold for LuScO 3 :Dy, LuYO 3 :Dy, and YScO 3 :Dy were calculated to be 460.79, 497.69, and 435.96 μs, respectively. Among them, the radiation lifetime of LuYO 3 :Dy was the longest, still longer than those of LiNbO 3 :Dy crystal (387 μs) 36 and GdVO 4 :Dy crystal (411 μs), 37 but lower than that of YAG:Dy ceramics (2.02 ms) 11 . With the largest spontaneous transition probability, the branching ratios corresponding to 4 F 9/2 → 6 H 13/2 transition at 573 nm for LuScO 3 :Dy, LuYO 3 :Dy, and YScO 3 :Dy were 74.05%, 73.57%, and 74.36%, respectively, indicating a greater potential for yellow laser at 573 nm.…”

Section: Resultsmentioning

confidence: 99%

Comparative spectroscopic investigation of Dy³⁺ ions in different sesquioxide solid solution ceramics

et al. 2022

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A comparative study of the spectroscopic properties of LuScO3:Dy, LuYO3:Dy, and YScO3:Dy was conducted to evaluate their application prospects in yellow laser generation. The absorption cross sections of Dy‐doped LuScO3, LuYO3, and YScO3 at 446 nm were calculated to be 0.67, 1.51, and 1.05 × 10−21 cm2, respectively. The Judd–Ofelt (J–O) theory was used to determine the J–O parameters as well as the spontaneous transition probability and fluorescence branching ratios. The fluorescence spectra of LuScO3:Dy, LuYO3:Dy, and YScO3:Dy were dominated by yellow emission corresponding to the 4F9/2 → 6H13/2 transition, with cross sections of 0.78, 1.10, and 0.76 × 10−20 cm2, respectively. The Inokuti–Hirayama model was applied to fit the non‐exponential decay curve of Dy‐doped sesquioxide solid solution ceramics in order to investigate the process of energy transfer. The impact of bond length and distortion degree on spectral properties and energy‐transfer parameters was investigated. It was concluded that among Dy‐doped sesquioxide solid solutions, LuYO3:Dy ceramics are the most promising materials for generating yellow lasers.

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Section: Resultsmentioning

confidence: 99%

Comparative spectroscopic investigation of Dy³⁺ ions in different sesquioxide solid solution ceramics

et al. 2022

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“…When Dy 3+ occupies a high symmetry site with an inversion center, the blue emission ( 4 F 9/2 → 6 H 15/2 ) usually dominates over other emission peaks. In contrast, the yellow emission ( 4 F 9/2 → 6 H 13/2 ) is the most intense. , The yellow/blue (Y/B) ratio can be intentionally modulated by varying the chemical composition or the concentration of Dy 3+ ions in perspective to obtain single-phase white-light-emitting phosphors . This Y/B ratio also provides information about the local environment around the Dy 3+ ions: the higher the ratio of yellow-to-blue emission (≫1) often indicates a lower site symmetry of Dy 3+ . , …”

Section: Introductionmentioning

confidence: 99%

“… 25 This Y/B ratio also provides information about the local environment around the Dy 3+ ions: the higher the ratio of yellow-to-blue emission (≫1) often indicates a lower site symmetry of Dy 3+ . 24 , 25 …”

Section: Introductionmentioning

confidence: 99%

Effect of A-Cation Radius on the Structure, Luminescence, and Temperature Sensing of Double Perovskites A₂MgWO₆ Doped with Dy³⁺ (A = Ca, Sr, Ba)

Vu,

Stefańska,

Dereń

2023

Inorg. Chem.

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Herein, we report a case of A 2 MgWO 6 (A = Ca, Sr, Ba) doped with 2%Dy 3+ , 2%Li + , in which the influences of the cation substitution are exhibited through the crystal structure, the charge transfer band (O 2– –W 6+ ), the emission spectrum, the color of the luminescence, and the luminescent decay time. The substitution of Ca 2+ and Sr 2+ ions for larger ions (Ba 2+ ) led to the crystal structure alteration from cubic to monoclinic and tetragonal, respectively. These structure changes also lowered the crystallography symmetry site of Dy 3+ , tuned the color of the emitted light from the whitish to yellowish region, and caused a blue shift of the CTB. Furthermore, a significant decline in the lifetime of the 4 F 9/2 → 6 H 13/2,15/2 transitions was noticed, from 748, 199, to 146 μs corresponding to Ba, Sr, Ca sample owing to the reduction in the local symmetry of Dy 3+ . Moreover, the thermal sensing properties of 2%Dy 3+ -doped samples were investigated based on the fluorescence intensity ratio technique in the range of 80–325 K. Under 266 nm excitation wavelength, the maximum relative sensitivity of the investigated samples was remarkably enhanced from 2.26%/K, 3.04%/K, to 4.38%/K corresponding to Ba, Ca, and Sr samples, respectively. In addition to providing a comprehensive understanding of the effects of compositional modifications on the optical properties, the results also present a viable pathway to manipulate the temperature sensing performance.

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Yellow laser potential of cubic Ca3(Nb,Ga)5O12:Dy3+ and Ca3(Li,Nb,Ga)5O12:Dy3+ single crystals

Gheorghe

Hau

Gheorghe

et al. 2018

Journal of Alloys and Compounds

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Optical spectra of Dy3+-doped GdVO4 and Ca3Sc2Ge3O12 crystals and evaluation of the Ω2/Ω6 ratio as a quality factor for the classification of Dy3+-activated crystalline hosts

Cited by 10 publications

References 27 publications

Comparative spectroscopic investigation of Dy³⁺ ions in different sesquioxide solid solution ceramics

Comparative spectroscopic investigation of Dy³⁺ ions in different sesquioxide solid solution ceramics

Effect of A-Cation Radius on the Structure, Luminescence, and Temperature Sensing of Double Perovskites A₂MgWO₆ Doped with Dy³⁺ (A = Ca, Sr, Ba)

Yellow laser potential of cubic Ca3(Nb,Ga)5O12:Dy3+ and Ca3(Li,Nb,Ga)5O12:Dy3+ single crystals

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Optical spectra of Dy3+-doped GdVO4 and Ca3Sc2Ge3O12 crystals and evaluation of the Ω2/Ω6 ratio as a quality factor for the classification of Dy3+-activated crystalline hosts

Cited by 10 publications

References 27 publications

Comparative spectroscopic investigation of Dy3+ ions in different sesquioxide solid solution ceramics

Comparative spectroscopic investigation of Dy3+ ions in different sesquioxide solid solution ceramics

Effect of A-Cation Radius on the Structure, Luminescence, and Temperature Sensing of Double Perovskites A2MgWO6 Doped with Dy3+ (A = Ca, Sr, Ba)

Yellow laser potential of cubic Ca3(Nb,Ga)5O12:Dy3+ and Ca3(Li,Nb,Ga)5O12:Dy3+ single crystals

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Comparative spectroscopic investigation of Dy³⁺ ions in different sesquioxide solid solution ceramics

Comparative spectroscopic investigation of Dy³⁺ ions in different sesquioxide solid solution ceramics

Effect of A-Cation Radius on the Structure, Luminescence, and Temperature Sensing of Double Perovskites A₂MgWO₆ Doped with Dy³⁺ (A = Ca, Sr, Ba)