Luminescent properties of Sr2MgSi2O7 and Ca2MgSi2O7 long lasting phosphors activated by Eu2+, Dy3+

Qin, Fei; Chang, Chengkang; Mao, Dali

doi:10.1016/j.jallcom.2004.06.096

Cited by 152 publications

(68 citation statements)

References 11 publications

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“…The kinetic parameters were calculated according to the glow curve shape method (modified by Chen) [45,46] and results are tabulated in Table 2. The order of kinetics were estimated by the form factor 'm g ' also known as symmetry factor m g ¼ ðT 2 ÀT m Þ=ðT 2 ÀT 1 Þ ¼ ðd=oÞ, where T 1 and T 2 are the temperatures (from the deconvoluted curves) corresponding to the half of the maximum intensities on either side of the glow peak maximum-T m [47,48].…”

Section: Resultsmentioning

confidence: 99%

100MeV Si8+ ion induced luminescence and thermoluminescence of nanocrystalline Mg2SiO4:Eu3+

Prashantha¹,

Lakshminarasappa²,

Singh³

2012

Journal of Luminescence

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a b s t r a c tNanoparticles of Mg 2 SiO 4 :Eu 3 þ have been prepared by the solution combustion technique and the grain size estimated by PXRD is found to be in the range 40-50 nm. Ionoluminescence (IL) studies of Mg 2 SiO 4 :Eu 3 þ pellets bombarded with 100 MeV Si 8 þ ions with fluences in the range 1.124-22.48 Â 10 12 ions cm À 2 are carried out at IUAC, New Delhi, India. Five prominent IL bands with peaks at 580 nm, 590 nm, 612 nm, 655 nm and 705 nm are recorded. These characteristic emissions are attributed to the luminescence centers activated by Eu 3 þ cations. It is found that IL intensity decreases rapidly in the beginning. Later on, the intensity decreases slowly with further increase of ion fluence. The reduction in the ionoluminescence intensity with increase of ion fluence might be attributed to degradation of Si-O (n 3 ) and Si-O (2n 3 ) bonds present on the surface of the sample. The red emission with peak at 612 nm is due to characteristic emission of 5 D 0 -7 F 2 of the Eu 3 þ cations. Thermoluminescence (TL) studies of Mg 2 SiO 4 :Eu 3 þ pellets bombarded with 100 MeV Si 8 þ cations with fluences in the range 5 Â 10 11 ions cm À 2 to 5 Â 10 13 ions cm À 2 are made at RT. Two prominent and well resolved TL glows with peaks at $ 220 1C and $ 370 1C are observed. It is observed that TL intensity increases with increase of ion fluence. This might be due to creation of new traps during swift heavy ion irradiation.

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Section: Resultsmentioning

confidence: 99%

100MeV Si8+ ion induced luminescence and thermoluminescence of nanocrystalline Mg2SiO4:Eu3+

Prashantha¹,

Lakshminarasappa²,

Singh³

2012

Journal of Luminescence

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“…, Dy 3? phosphor can cover the UV region due to the preparation and luminescence mechanism of the phosphor described by Fei and Mao [21]. And here, Sr 2 MgSi 2 O 7 :Eu 2?…”

Section: Introductionmentioning

confidence: 93%

“…, Dy 3? powders (synthetized as described in the literature [21]), analytical purity acetic acid, anhydrous alcohol and nitric acid. The synthesis process is shown in Fig.…”

Section: Preparation Of the Samplesmentioning

confidence: 99%

Preparation and catalytic activity research of the Sr2MgSi2O7:Eu2+, Dy3+/TiO2 composite catalyst

et al. 2015

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In order to make TiO 2 with photocatalytic ability in dark environment, TiO 2 -coated Sr 2 MgSi 2 O 7 :Eu 2? , Dy 3? phosphor (TB particles) with different ratios were successfully designed and synthesized. It was found that sample TB2 had the best catalytic activity under light irradiation; when without light irradiation, the optimum catalytic property appeared in sample TB4. It was proposed that the catalytic performance was driven by two factors: the electrons transportation as well as light transfer between the phosphors and TiO 2 particles.

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“…However, it is water soluble. Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ , a water-insoluble afterglow material, was recently proposed by numerous research groups [15][16][17][18]. If these afterglow materials can be nanosized, they would be very useful in many fields.…”

Section: Introductionmentioning

confidence: 99%

Optical Properties of Afterglow Nanoparticles : , Capped with Polyethylene Glycol

Yoshimura

Ishizaki

Wakai

et al. 2012

Advances in Optical Technologies

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The optical properties of afterglow nanoparticles were successfully improved by the addition of polyethylene glycol (PEG) to an afterglow colloidal solution. Afterglow nanoparticles-Sr 2 MgSi 2 O 7 : Eu 2+ , Dy 3+ -were prepared by laser ablation in liquid. The quantum yields and the decay curves were measured by a fluorescence spectrophotometer. An increase in the amount of PEG added to the solution increased the quantum yield of the nanoparticles and improved the afterglow property in the initial portion of the decay curve. However, the afterglow property did not change after a substantial amount of time had passed. The afterglow nanoparticles were capped with PEG molecules, and surface defects of the nanoparticles were passivated, which decreased the optical properties.

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Luminescent properties of Sr2MgSi2O7 and Ca2MgSi2O7 long lasting phosphors activated by Eu2+, Dy3+

Cited by 152 publications

References 11 publications

100MeV Si8+ ion induced luminescence and thermoluminescence of nanocrystalline Mg2SiO4:Eu3+

100MeV Si8+ ion induced luminescence and thermoluminescence of nanocrystalline Mg2SiO4:Eu3+

Preparation and catalytic activity research of the Sr2MgSi2O7:Eu2+, Dy3+/TiO2 composite catalyst

Optical Properties of Afterglow Nanoparticles : , Capped with Polyethylene Glycol

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