RETRACTED: Luminescence enhancement of bluish-green Sr2Al2SiO7:Eu2+ phosphor by dysprosium co-doping

Sahu, Ishwar Prasad; Bisen, D. P.; Brahme, Nameeta; Tamrakar, Raunak Kumar

doi:10.1016/j.jlumin.2015.06.023

Cited by 25 publications

(3 citation statements)

References 47 publications

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“…Meanwhile, under 397 nm excitation, the maximum peak of the emission spectrum located at B536 nm, which falls in the green-light range and belongs to the typical 4f 6 5d 1 -4f 7 electronic transition of Eu 2+ . [42][43][44][45][46] The emission spectra revealed that luminescent intensity was strongly dependent on the doping concentration of Eu 2+ due to concentration quenching, and the optimum Eu 2+ content was 0.03. Fig.…”

Section: Pl Tl and Long Persistent Luminescence (Lpl)mentioning

confidence: 99%

Trap-regulated highly efficient mechanoluminescence and persistent mechanoluminescence of Ca₂MgSi₂O₇:Eu²⁺

Yan¹,

Fang²,

Li³

et al. 2023

J. Mater. Chem. C

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Section: Pl Tl and Long Persistent Luminescence (Lpl)mentioning

confidence: 99%

Trap-regulated highly efficient mechanoluminescence and persistent mechanoluminescence of Ca₂MgSi₂O₇:Eu²⁺

Yan¹,

Fang²,

Li³

et al. 2023

J. Mater. Chem. C

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“…After the removal of excitation, the trapped carriers are liberated thermally. They migrate and then recombine with Eu 2+ and leads to radiative emission (4,22). Figure 11(b) shows the TL emission spectra of Ba 1.93 MgSi 2 O 7 :0.05Eu 2+ ,0.02Dy 3+ phosphors, which shows the maximum TL emission at 500 nm, which is due to 5d to 4f transition of Eu 2+ and no separate emission of Dy 3+ is observed.…”

Section: Thermoluminescence Characteristicsmentioning

confidence: 99%

Photoluminescence and thermoluminescence properties of Eu²⁺ doped and Eu²⁺,Dy³⁺ co‐doped Ba₂MgSi₂O₇ phosphors

et al. 2016

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In this work, we report the preparation, characterization, comparison and luminescence mechanisms of Eu -doped and Eu ,Dy -co-doped Ba MgSi O (BMSO) phosphors. Prepared phosphors were synthesized via a high temperature solid-state reaction method. All prepared phosphors appeared white. The phase structure, particle size, and elemental analysis were analyzed using X-ray diffraction (XRD), transmission electron microscopy (TEM) and energy-dispersive X-ray (EDX) analysis. The luminescence properties of the phosphors were investigated by thermoluminescence (TL) and photoluminescence (PL). The PL excitation and emission spectra of Ba MgSi O :Eu showed the peak to be around 381 nm and 490 nm respectively. The PL excitation spectrum of Ba MgSi O :Eu Dy showed the peak to be around 341 nm and 388 nm, and the emission spectrum had a broad band around 488 nm. These emissions originated from the 4f 5d to 4f transition of Eu . TL analysis revealed that the maximum TL intensity was found at 5 mol% of Eu doping in Ba MgSi O phosphors after 15 min of ultraviolet (UV) light exposure. TL intensity was increased when Dy ions were co-doped in Ba MgSi O :Eu and maximum TL intensity was observed for 2 mol% of Dy . TL emission spectra of Ba MgSi O :0.05Eu and Ba MgSi O :0.05Eu ,0.02Dy phosphors were found at 500 nm. TL intensity increased with UV exposure time up to 15 min, then decreased for the higher UV radiation dose for both Eu doping and Eu,Dy co-doping. The trap depths were calculated to be 0.54 eV for Ba MgSi O :0.05Eu and 0.54 eV and 0.75 eV for Ba MgSi O :0.05Eu ,0.02Dy phosphors. It was observed that co-doping with small amounts of Dy enhanced the thermoluminescence properties of Ba MgSi O phosphor. Copyright © 2016 John Wiley & Sons, Ltd. [Correction added on 5 April 2016, after first online publication: The following parts of the abstract have been edited for consistency. '4f65d1' has been corrected to '4f 5d ', '4f7' has been corrected to '4f ', 'Ba1.95' has been corrected to 'Ba ' and 'Ba1.93' has been corrected to 'Ba ' respectively.].

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“…Recently, alkaline Earth aluminosilicates have attracted much attention and become an interesting in the eld of luminescent materials because of their high chemical and thermal stability, excellent hardness and water-resistant property, comparing with sul de phosphors [14,15]. Among, the aluminosilicate group gehlenite materials present superior photoluminescence properties when doped with rare Earth metal ions.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Annealing and Crystallite Size on the Photoluminescence Properties of Ca2Al2SiO7: Eu Phosphors Prepared by Spray Pyrolysis

Bakare

Aga

Hirpho

et al. 2022

Advances in Materials Science and Engineering

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Crystalline gehlenite (Ca2Al2SiO7) phosphor, doped with Eu ions, was successfully synthesized by the spray pyrolysis method followed by annealing temperature. The crystallite size and photoluminescence characterization were investigated as function of the annealing temperature. The X-ray diffraction pattern indicates that all peaks could be ascribed to the tetragonal Ca2Al2SiO7 phase in which the dopant could not affect the crystal structures. All annealed powders emitted red luminescence at 613 nm under excitation of 394 nm. However, at 1300°C annealing temperature for Ca2Al2SiO7 doped with Eu ions, the maximum photo luminescent intensity has been obtained.

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RETRACTED: Luminescence enhancement of bluish-green Sr2Al2SiO7:Eu2+ phosphor by dysprosium co-doping

Cited by 25 publications

References 47 publications

Trap-regulated highly efficient mechanoluminescence and persistent mechanoluminescence of Ca₂MgSi₂O₇:Eu²⁺

Trap-regulated highly efficient mechanoluminescence and persistent mechanoluminescence of Ca₂MgSi₂O₇:Eu²⁺

Photoluminescence and thermoluminescence properties of Eu²⁺ doped and Eu²⁺,Dy³⁺ co‐doped Ba₂MgSi₂O₇ phosphors

Investigation of Annealing and Crystallite Size on the Photoluminescence Properties of Ca2Al2SiO7: Eu Phosphors Prepared by Spray Pyrolysis

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RETRACTED: Luminescence enhancement of bluish-green Sr2Al2SiO7:Eu2+ phosphor by dysprosium co-doping

Cited by 25 publications

References 47 publications

Trap-regulated highly efficient mechanoluminescence and persistent mechanoluminescence of Ca2MgSi2O7:Eu2+

Trap-regulated highly efficient mechanoluminescence and persistent mechanoluminescence of Ca2MgSi2O7:Eu2+

Photoluminescence and thermoluminescence properties of Eu2+ doped and Eu2+,Dy3+ co‐doped Ba2MgSi2O7 phosphors

Investigation of Annealing and Crystallite Size on the Photoluminescence Properties of Ca2Al2SiO7: Eu Phosphors Prepared by Spray Pyrolysis

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Trap-regulated highly efficient mechanoluminescence and persistent mechanoluminescence of Ca₂MgSi₂O₇:Eu²⁺

Trap-regulated highly efficient mechanoluminescence and persistent mechanoluminescence of Ca₂MgSi₂O₇:Eu²⁺

Photoluminescence and thermoluminescence properties of Eu²⁺ doped and Eu²⁺,Dy³⁺ co‐doped Ba₂MgSi₂O₇ phosphors