Eu2+–Mn2+ energy transfer in white-light-emitting T-phase (Ba,Ca)2SiO4:Eu2+, Mn2+ phosphor

Choi, Namsik; Park, Kwang‐Won; Park, Boowon; Zhang, Xinmin; Kim, Jong-Su; Kung, Patrick; Kim, Seongsin Margaret

doi:10.1016/j.jlumin.2009.10.031

Cited by 42 publications

(11 citation statements)

References 16 publications

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“…Results showed that the Sr 2 SiO 4 : Eu 2+ phosphor exhibited the yellow-greenish emission, high quantum efficiency and strong absorption in n-UV region, which proves that Sr 2 SiO 4 : Eu 2+ is a promising phosphor for white LEDs [8][9][10]. As we all known, the size distribution and the shape of phosphor particles have serious effect on the efficiency of w-LEDs, thus it is important for the phosphor used in w-LEDs to control the size and the shape of the phosphor particles.…”

Section: Introductionmentioning

confidence: 89%

Luminescent properties of Sr2SiO4: Eu2+ nanorods for near-UV white LED

Guo

et al. 2010

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 89%

Luminescent properties of Sr2SiO4: Eu2+ nanorods for near-UV white LED

Guo

et al. 2010

Journal of Alloys and Compounds

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“…The emission and excitation spectra of Eu 2+ ions usually consist of broadbands assigned to the transitions between the 4 f 7 ground state and the crystal‐field components of the 4 f 6 5 d excited‐state configuration. Thus, white light can be produced from the Eu 2+ and Mn 2+ codoped single‐phased phosphors via adjusting the ratio of the Eu 2+ /Mn 2+ under effective resonance‐type energy transfer . Since 1998, the Eu 2+ →Mn 2+ energy‐transfer process was first investigated in the host of BaMg 2 Si 2 O 7 :Eu 2+ ,Mn 2+ , up to now, in many systems the energy transfer between Eu 2+ →Mn 2+ has been explained, such as silicates, phosphates, and aluminates; also numerous advances have been applied to w ‐LEDs with outstanding performances.…”

Section: Introductionmentioning

confidence: 99%

Crystal structure and luminescence properties of a single‐component white‐light‐emitting phosphor Ca₈ZnLa(PO₄)₇:Eu²⁺,Mn²⁺

Liu

Mei

et al. 2017

J Am Ceram Soc

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A series of novel green emission Whitlockite-type Ca 8 ZnLa(PO 4 ) 7 :Eu 2+ and color tunable Ca 8 ZnLa(PO 4 ) 7 :Eu 2+ ,Mn 2+ phosphors were prepared by the solid-state reaction method in a reducing atmosphere. Its crystal structure and phase composition were identified by high-resolution transmission electron microscopy, selected area electronic diffraction, X-ray photoelectron spectroscopy, and X-ray powder diffraction Rietveld refinement, and it was found to be trigonal, belonging to R-3c (161) space group. The luminescence properties of Eu 2+ singly doped and Eu 2+ / Mn 2+ codoped Ca 8 ZnLa(PO 4 ) 7 phosphors were revealed in detail. Ca 8 ZnLa(PO 4 ) 7 : Eu 2+ is excitable over a broad range from 200 to 450 nm with a prominent green emitting. With varied Eu 2+ /Mn 2+ ratios, fine-tune emission under 365 nm excitation can be achieved from green (0.221, 0.468) to magenta (0.391, 0.276), especially the warm white light (0.392, 0.352), and CCT 3500 K can be obtained by the process of energy transfer between Eu 2+ and Mn 2+ . The ET mechanism in this system is managed via the dipole-dipole interaction with the maximum energy-transfer efficiency 82.8% based on the decay lifetime data. These results suggest that as-prepared phosphors can serve as promising candidates of UV-pumped w-LEDs. K E Y W O R D Soptical materials/properties, phosphates, photoluminescence, structure

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“…Recently, much effort has been put into the development of white (W)‐LEDs, due to their wide application in consumable electronic devices . In general, white light can be obtained in two ways.…”

Section: Introductionmentioning

confidence: 99%

Novel optical properties of Ca₁₂Al_10.6Si_3.4O₃₂Cl_5.4:Ce³⁺,Li⁺ phosphor for solid‐state lighting

2016

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This article reports a novel blue emission in a series of Ca Al Si O Cl :Ce phosphor under excitation in the near-UV wavelength range. This phosphor was prepared using the combustion method. Here, the Ce emission band is observed over a broad range of 380-550 nm, under 365 nm excitation, and is due to 5d-4f transition. The effect of a Li charge compensator on the emission properties of the phosphor was also investigated for the first time. X-Ray diffraction confirmed the phase purity of the synthesized phosphor. The surface morphology and elemental composition of the phosphor were studied using scanning electron microscopy and energy-dispersive X-ray spectroscopy. Copyright © 2016 John Wiley & Sons, Ltd.

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Eu2+–Mn2+ energy transfer in white-light-emitting T-phase (Ba,Ca)2SiO4:Eu2+, Mn2+ phosphor

Cited by 42 publications

References 16 publications

Luminescent properties of Sr2SiO4: Eu2+ nanorods for near-UV white LED

Luminescent properties of Sr2SiO4: Eu2+ nanorods for near-UV white LED

Crystal structure and luminescence properties of a single‐component white‐light‐emitting phosphor Ca₈ZnLa(PO₄)₇:Eu²⁺,Mn²⁺

Novel optical properties of Ca₁₂Al_10.6Si_3.4O₃₂Cl_5.4:Ce³⁺,Li⁺ phosphor for solid‐state lighting

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Eu2+–Mn2+ energy transfer in white-light-emitting T-phase (Ba,Ca)2SiO4:Eu2+, Mn2+ phosphor

Cited by 42 publications

References 16 publications

Luminescent properties of Sr2SiO4: Eu2+ nanorods for near-UV white LED

Luminescent properties of Sr2SiO4: Eu2+ nanorods for near-UV white LED

Crystal structure and luminescence properties of a single‐component white‐light‐emitting phosphor Ca8ZnLa(PO4)7:Eu2+,Mn2+

Novel optical properties of Ca12Al10.6Si3.4O32Cl5.4:Ce3+,Li+ phosphor for solid‐state lighting

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Crystal structure and luminescence properties of a single‐component white‐light‐emitting phosphor Ca₈ZnLa(PO₄)₇:Eu²⁺,Mn²⁺

Novel optical properties of Ca₁₂Al_10.6Si_3.4O₃₂Cl_5.4:Ce³⁺,Li⁺ phosphor for solid‐state lighting