White light emission in alkali metal ion co-doped single host lattice phosphor Sr3B2O6:Ce3+,Eu2+,A+ [A=Li, Na and K]

Sekar, Sankar; Arunkumar, P.; Jeyakumar, D.; Lakshminarasimhan, N.

doi:10.1016/j.ceramint.2014.10.180

Cited by 19 publications

(6 citation statements)

References 13 publications

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“…Considering that the non‐equivalent substitution of Ca 2+ by Ce 3+ may cause charge imbalance, we added Li + ions in the CSC:Ce 3+ phosphor as a charge compensator. Previous research has shown that incorporation of a charge compensator could enhance the emission intensity of some phosphors such as Sr 3 B 2 O 6 :Ce 3+ ,Eu 2+ or Sr 2 SiO 4 :Eu 3+ …”

Section: Resultsmentioning

confidence: 99%

Tunable luminescence and energy transfer in Ca₃SiO₄Cl_2:Ce³⁺,Li⁺,Mn²⁺,Eu²⁺ phosphors

Xie

Wei

et al. 2017

Luminescence

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A series of color-tunable Ca SiO Cl (CSC):xCe ,xLi ,yMn ,zEu phosphors with low temperature phase structure was synthesized via the sol-gel method. An energy transfer process from Ce to Mn in CSC:0.01Ce ,0.01Li ,yMn (y = 0.03-0.09) and the mechanism was verified to be an electric dipole-dipole interaction. The Ce and Mn emission intensities were greatly enhanced by co-doping Eu ions into CSC:0.01Ce ,0.01Li ,0.07Mn phosphors due to competitive energy transfers from Eu /Ce to Mn , and Ce to Eu . Under 332 nm excitation, CSC:0.01Ce ,0.01Li+,0.07Mn ,zEu (z = 0.0005-0.002) exhibited tunable emission colors from green to white with coexisting orange, green and violet-blue emissions. These phosphors could have potential application in white light-emitting diodes.

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Section: Resultsmentioning

confidence: 99%

Tunable luminescence and energy transfer in Ca₃SiO₄Cl_2:Ce³⁺,Li⁺,Mn²⁺,Eu²⁺ phosphors

Xie

Wei

et al. 2017

Luminescence

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“…The absorption bands observed between 600 and 620 cm −1 are due to the bending vibrations of planar -BO 3 group. 26,43 The magnified view of the absorption peaks of compositional series in the region from 590 to 610 cm −1 is also provided. As the m value increases, the intensities of the bending vibrations of planar -BO 3 group decline progressively.…”

Section: Resultsmentioning

confidence: 99%

“…22,23 The photoluminescence properties of Sr 3 B 2 O 6 :Eu 2+ were reported in the last century 24,25 and later referred to by several other researchers. [26][27][28][29][30][31] With a fairly broad excitation band covering the range 250-500 nm, Eu 2+ single-or Eu 2+ -A (A = Ce 3+ or Mn 2+ ) co-doped Sr 3 B 2 O 6 phosphors have been considered as promising components for near UV/blue LEDs. According to the crystal structure database, Sr 3 B 2 O 6 , Ca 3 B 2 O 6 and Eu 3 B 2 O 6 are iso-structural with each other and share the same space group R3 ¯c (167).…”

Section: Introductionmentioning

confidence: 99%

The structural evolution and spectral blue shift of solid solution phosphors Sr_3−mCa_mB₂O₆:Eu²⁺

et al. 2016

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An unexpected spectral blue shift of the emission from yellow to green is observed for the solid solution phosphors Sr 3−m Ca m B 2 O 6 :Eu 2+ (m = 0-3), when larger Sr 2+ ions are substituted by smaller Ca 2+ ions in Sr 3 B 2 O 6 lattices. The powder X-ray patterns of all the phases indicate a structural similarity to the end compounds and show a smooth variation of the structural parameters with composition in the full range. The linear structural evolution of the iso-structural Sr 3−m Ca m B 2 O 6 solid solutions obeying Vegard's rule has also been examined and verified by Rietveld refinement, high resolution transmission electron microscopy andFourier transform infrared spectroscopy. The average bond lengths of the central cations to the coordinating anions and the distortion indexes of the coordination polyhedra are investigated. As a result, the symmetry of the coordination crystal field is found to be higher with increasing Ca content in the solid solutions phosphors, which should be primarily responsible for the continuous blue shift of the emission spectra of Sr 2.96−m Ca m B 2 O 6 :0.04Eu 2+ with the growth of the m value.

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“…The presence of nearby cationic vacancies locally distorts the crystal structure, lowering the symmetry of the europium(III) centre. [48][49][50] The elimination of compensators can be realised as the physical removal of these vacancies via chemical species migration at high temperatures or the creation of secondary compensation defects near the previous one. The fluxes are generally used to diminish the synthesis temperature due to the creation of a liquid phase in the reaction system and thus facilitate the mobility of the chemical species.…”

Section: Papermentioning

confidence: 99%

Controlling the europium oxidation state in diopside through flux concentration

Górecka,

Leśniewski,

Mahlik

et al. 2024

Dalton Trans.

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White light emission in alkali metal ion co-doped single host lattice phosphor Sr3B2O6:Ce3+,Eu2+,A+ [A=Li, Na and K]

Cited by 19 publications

References 13 publications

Tunable luminescence and energy transfer in Ca₃SiO₄Cl_2:Ce³⁺,Li⁺,Mn²⁺,Eu²⁺ phosphors

Tunable luminescence and energy transfer in Ca₃SiO₄Cl_2:Ce³⁺,Li⁺,Mn²⁺,Eu²⁺ phosphors

The structural evolution and spectral blue shift of solid solution phosphors Sr_3−mCa_mB₂O₆:Eu²⁺

Controlling the europium oxidation state in diopside through flux concentration

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White light emission in alkali metal ion co-doped single host lattice phosphor Sr3B2O6:Ce3+,Eu2+,A+ [A=Li, Na and K]

Cited by 19 publications

References 13 publications

Tunable luminescence and energy transfer in Ca3SiO4Cl2:Ce3+,Li+,Mn2+,Eu2+ phosphors

Tunable luminescence and energy transfer in Ca3SiO4Cl2:Ce3+,Li+,Mn2+,Eu2+ phosphors

The structural evolution and spectral blue shift of solid solution phosphors Sr3−mCamB2O6:Eu2+

Controlling the europium oxidation state in diopside through flux concentration

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Tunable luminescence and energy transfer in Ca₃SiO₄Cl_2:Ce³⁺,Li⁺,Mn²⁺,Eu²⁺ phosphors

Tunable luminescence and energy transfer in Ca₃SiO₄Cl_2:Ce³⁺,Li⁺,Mn²⁺,Eu²⁺ phosphors

The structural evolution and spectral blue shift of solid solution phosphors Sr_3−mCa_mB₂O₆:Eu²⁺