Mechanism of energy transfer in Sr2CeO4:Eu3+ phosphor

Viagin, Oleg; Masalov, A. A.; Ganina, I. I.; Malyukin, Yu. V.

doi:10.1016/j.optmat.2008.12.038

Cited by 44 publications

(22 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As dopant concentration of Eu 3 þ cations increases, 5 D 0 -7 F 2 transition dominates and the emission intensity increases and it may be attributed to the increasing distortion of the local field around the Eu 3 þ cations [37]. It further, results in the luminescence intensity redistribution between the host and the dopant [38]. The host material Mg 2 SiO 4 is a member of the olivine family of crystals with orthorhombic crystalline structure in which Mg 2 þ occupies two nonequivalent octahedral sites: one (M1) with inversion symmetry (Ci) and the other (M2) with mirror symmetry (Cs) [39].…”

Section: Resultsmentioning

confidence: 99%

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

Prashantha¹,

Lakshminarasappa²,

Singh³

2012

Journal of Luminescence

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

confidence: 99%

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

Prashantha¹,

Lakshminarasappa²,

Singh³

2012

Journal of Luminescence

View full text Add to dashboard Cite

show abstract

“…An appropriate luminescence activator, chosen from a series of Ln 3+ ions, can tune the emission of a Sr 2 CeO 4 matrix through the energy transfer (ET) from the host to the Ln 3+ ion. 16 To the solutions mixed in stoichiometric proportions, citric acid monohydrate (CA; CHEMPUR, p.a.) and ethylene glycol (EG; CHEMPUR, p.a.)…”

Section: ■ Introductionmentioning

confidence: 99%

Tunable Luminescence of Sr₂CeO₄:M²⁺ (M = Ca, Mg, Ba, Zn) and Sr₂CeO₄:Ln³⁺ (Ln = Eu, Dy, Tm) Nanophosphors

et al. 2012

View full text Add to dashboard Cite

Nanophosphors based on cerium−strontium oxide (Sr 2 CeO 4 ), doped with M 2+ or Ln 3+ (M = Ca, Mg, Ba, Zn; Ln = Eu, Dy, Tm) were successfully prepared using a modified Pechini method. The structure of prepared materials has been confirmed and characterized using several techniques such as X-ray powder diffraction (XRD), scanning and transmission electron microscopy (SEM and TEM). The obtained materials were composed of nanocrystals with an average size around ∼50 nm. The luminescence properties of synthesized nanophosphors were characterized by excitation or emission spectra and luminescence lifetimes. The chromaticity coordinates were also calculated to demonstrate changes of the luminescence color.

show abstract

“…Hirari and Kawamura [22] suggested that this process was a direct energy transfer from the triplet excited state of the metalto-ligand-charge-transfer (MLCT) state to the intra-4f excited state of Eu 3+ ion. Further research by Viagin et al revealed the Förster non-radiative energy transfer under the energy migration condition from Sr 2 CeO 4 crystal host to doping europium ions [23].…”

Section: Introductionmentioning

confidence: 99%

Electronic properties and europium ion photoluminescence behaviors in Sr2CeO4 phosphor

Wang

Zhou

et al. 2010

Journal of Alloys and Compounds

View full text Add to dashboard Cite

Mechanism of energy transfer in Sr2CeO4:Eu3+ phosphor

Cited by 44 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+

Tunable Luminescence of Sr₂CeO₄:M²⁺ (M = Ca, Mg, Ba, Zn) and Sr₂CeO₄:Ln³⁺ (Ln = Eu, Dy, Tm) Nanophosphors

Electronic properties and europium ion photoluminescence behaviors in Sr2CeO4 phosphor

Contact Info

Product

Resources

About

Mechanism of energy transfer in Sr2CeO4:Eu3+ phosphor

Cited by 44 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+

Tunable Luminescence of Sr2CeO4:M2+ (M = Ca, Mg, Ba, Zn) and Sr2CeO4:Ln3+ (Ln = Eu, Dy, Tm) Nanophosphors

Electronic properties and europium ion photoluminescence behaviors in Sr2CeO4 phosphor

Contact Info

Product

Resources

About

Tunable Luminescence of Sr₂CeO₄:M²⁺ (M = Ca, Mg, Ba, Zn) and Sr₂CeO₄:Ln³⁺ (Ln = Eu, Dy, Tm) Nanophosphors