Luminescence of Eu2+in Host Lattices with Three Alkaline Earth Ions in a Row

Poort, S. H. M.; Krevel, J.W.H. van; Stomphorst, Regien G.; Vink, Annemieke; Blasse, G.

doi:10.1006/jssc.1996.0137

Cited by 69 publications

(52 citation statements)

References 5 publications

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“…The increase in SiO 2 content enhances the degree of covalency, and weakens the interaction between the electrons. As a result, they spread out over wider orbitals [31,32] . Consequently, the energy difference between ground state (4f 7 ) and excited state (4f 6 5d 1 ) decreases with the increase of covalency, and enhances the degree of the t 2g and e g levels split, leading to larger CFS and red shift of emission peak.…”

Section: Condensed State Physicsmentioning

confidence: 99%

The development of silicate matrix phosphors with broad excitation band for phosphor-convered white LED

2008

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Section: Condensed State Physicsmentioning

confidence: 99%

The development of silicate matrix phosphors with broad excitation band for phosphor-convered white LED

2008

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“…Possible modification of the local structure due to increased CeO2 content may be responsible for the red-shift of the absorption and emission band of Ce 3+ ions as the additional CeO2 can change the glass structure, producing non-bridging oxygen atoms and altering the covalency and optical basicity of nearby Ce 3+ ions [14]. As covalency increases, the interaction between the electrons is reduced, so they spread out over wider orbitals [15]. Consequently, an increase in the covalency will reduce the energy difference between the ground and the excited states.…”

Section: Light Absorption Spectramentioning

confidence: 99%

The Effect of Cerium Reduction on Light Emission in Cerium-containing 20Y₂O₃-25Al₂O₃-55SiO₂ Glass

Maeng¹,

Choi²

2012

Journal of the Optical Society of Korea

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The effect of cerium concentration and the addition of Sb2O3 on the light emission of cerium-contained glass were investigated. The glass matrix composition was 20Y2O3-25Al2O3-55SiO2, the CeO2 concentration ranged from 0.05 to 0.5 mol%, and Sb2O3 was added at concentrations of 0.02 to 0.1 mol%. The Ce 3+ and Ce 4+ absorption bands were observed at approximately 330 nm and 240 nm, respectively. A broad emission band at 400 nm, due to the 4f-5d transition of the Ce 3+ ion, was observed under illumination by a UV light at 330 nm. The photoluminescence intensity of Ce 3+ had a maximum value at a CeO2 concentration of 0.1 mol%. Adding Sb2O3 decreased the Ce 4+ absorption intensity and enhanced the light emission intensity of Ce 3+ by about 45%.

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“…, Ba 3 (PO 4 ) 2 :Eu 2? [20] are reported. The energy transfer of activators in Ca 3 (PO 4 ) 2 :Pr 3?…”

Section: Introductionmentioning

confidence: 92%

“…ion, the Sm 3? ion is usually incorporated into Eu 3 [17][18][19][20][21][22][23][24]. For example, the luminescent properties of activators in Ca 3 (PO 4 ) 2 :Eu 3?…”

Section: Introductionmentioning

confidence: 99%

Luminescence properties and energy transfer of a red-emitting Ca3 (PO4)2:Sm3+, Eu3+ phosphor

Wang

Chen

et al. 2015

J Mater Sci: Mater Electron

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A series of Sm 3? , Eu 3? and Sm 3? -Eu 3? doped Ca 3 (PO 4 ) 2 were prepared by a high temperature solid-state method. Their luminescent properties were studied by photoluminescence emission, excitation spectra and decay curves. Under excitation with a wavelength at 403 nm, Ca 3 (PO 4 ) 2 :Sm 3? emits red-orange light, and the dominated peak situates at 602 nm which is due to the 4 G 5/2 ? 6 H 7/2 transition of Sm 3? . Ca 3 (PO 4 ) 2 :Eu 3? produces red light under the 394 nm excitation, and the strongest peak centers at 613 nm, which is assigned to 5 D 0 ? 7 F 2 transition of Eu 3? . The energy transfer from Sm 3? to Eu 3? in Ca 3 (PO 4 ) 2 host has been studied and demonstrated to be a resonant type via a dipole-quadrupole interaction mechanism. The critical distance of Sm 3? -Eu 3? in Ca 3 (PO 4 ) 2 is calculated to be 13.5 Å . With the increase of Eu 3? doping content, the energy transfer efficiency (Sm 3? ? Eu 3? ) obtained from decay curves gradually increases to 30.7 %. Moreover, the emitting color of Ca 3 (PO 4 ) 2 :Sm 3? , Eu 3? can be tuned by appropriately adjusting the relative doping composition of Sm 3? /Eu 3? .

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Luminescence of Eu2+in Host Lattices with Three Alkaline Earth Ions in a Row

Cited by 69 publications

References 5 publications

The development of silicate matrix phosphors with broad excitation band for phosphor-convered white LED

The development of silicate matrix phosphors with broad excitation band for phosphor-convered white LED

The Effect of Cerium Reduction on Light Emission in Cerium-containing 20Y₂O₃-25Al₂O₃-55SiO₂ Glass

Luminescence properties and energy transfer of a red-emitting Ca3 (PO4)2:Sm3+, Eu3+ phosphor

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Luminescence of Eu2+in Host Lattices with Three Alkaline Earth Ions in a Row

Cited by 69 publications

References 5 publications

The development of silicate matrix phosphors with broad excitation band for phosphor-convered white LED

The development of silicate matrix phosphors with broad excitation band for phosphor-convered white LED

The Effect of Cerium Reduction on Light Emission in Cerium-containing 20Y2O3-25Al2O3-55SiO2 Glass

Luminescence properties and energy transfer of a red-emitting Ca3 (PO4)2:Sm3+, Eu3+ phosphor

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The Effect of Cerium Reduction on Light Emission in Cerium-containing 20Y₂O₃-25Al₂O₃-55SiO₂ Glass