Synthesis and properties of Na3YSi2O7:Eu3+ phosphor for fluorescent lamp

Sakamoto, Tatsuya; Kousaka, S.; Uematsu, Kazuyoshi; Ishigaki, Tadashi; Toda, Kenji; Sato, Mineo

doi:10.1002/pssc.201084125

Cited by 20 publications

(8 citation statements)

References 5 publications

(9 reference statements)

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“…Luminescent materials have obtained practical applications in almost all devices relating to light. Fluorescent lamps, [1][2][3] cathode ray tubes 4,5 and X-ray detectors 6,7 are well-known examples of such applications. Three color phosphors which are used most extensively in fluorescent lamps are composed of Y 2 O 3 : Eu 3+ (red), MgAl 12 O 19 : Ce 3+ , Tb 3+ (green) and BaMg 2 Al 16 O 27 : Eu 2+ (blue).…”

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confidence: 99%

Intense Green-Emission and Energy Transfer in Phosphor LiGd(PO₃)₄: Ce³⁺, Tb³⁺

Chen

et al. 2012

ECS J. Solid State Sci. Technol.

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Ce3+ and Tb3+ doped LiGd(PO3)4 (LGP-CT) were synthesized with solid state reactions. The luminescence properties of Gd3+, Ce3+ and Tb3+ in LGP and energy transfer (ET) among these ions were investigated in detail. ET in Gd3+-Ce3+ and Gd3+-Tb3+ pairs is bidirectional. The luminescence lifetimes of Ce3+ and ET efficiency prove that unidirectional ET from Ce3+ to Tb3+ is very efficient. Efficient ET from Ce3+ to Tb3+ makes LGP-CT a promising green phosphor for fluorescent lamps. Optimized composition was experimentally determined to be 0.15 and 0.20 mol for Ce3+ and Tb3+, respectively. The integrated green emission intensity of LGP-Ce0.15T0.20 is 61.3% of commercial green phosphor LaPO4: Ce3+0.15, Tb3+0.20. However, synthesis temperature of the former is 500K lower than the latter. This provides LGP-CT an obvious advantage in the competition of commercial green phosphor for fluorescent lamps.

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confidence: 99%

Intense Green-Emission and Energy Transfer in Phosphor LiGd(PO₃)₄: Ce³⁺, Tb³⁺

Chen

et al. 2012

ECS J. Solid State Sci. Technol.

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“…For Na 3 YSi 2 O 7 , Sakamoto et al . demonstrated the potential application in fluorescent lamps and white LED . However, there are no reports on the photoluminescence of Dy 3+ ‐doped Na 3 YSi 2 O 7 phosphor materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Structure, and Thermally Stable Luminescence of Dy³⁺‐Doped Na₃YSi₂O₇ Host Compound

Sun

Cui

2013

J. Am. Ceram. Soc.

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Dy 3+ -activated Na 3 YSi 2 O 7 phosphors have been prepared via a solid-state reaction technique and may be used as a component of white light-emitting diodes. X-ray diffraction analysis demonstrates the single-phase formation and the substitution of activator ions for Na 3 YSi 2 O 7 :Dy 3+ materials. The emission of Dy 3+ in different Y 3+ lattice sites exhibits blue ( 4 F 9/2 ? 6 H 15/2 ) and yellow ( 4 F 9/2 ? 6 H 13/2 ) lights, which function together to generate white light. The optimum doping concentration is 3 mol% and energy transfer between Dy 3+ ions has been validated to be a resonant type via an electric dipole-dipole mechanism. The temperature-dependent luminescent properties from 25°C to 400°C are studied, and the blue emission increases as a function of the temperature. This interesting phenomenon is proposed to be the result of the model in the configurational coordination diagram. The present investigation reveals the potential application for Na 3 YSi 2 O 7 :Dy 3+ system in solid-state lighting.

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“…and the latest additions to the field are organic LED's and inorganic LED's which exploit electricity for light generation. [4][5][6][7][8][9][10][11] In these devices, white light has been generated either by mixing three different monochromatic sources (RGB) or conversion of UV/blue light by using phosphors. 12 These devices suffer either from single or multiple issues such as long term stability of emitters, high cost, and low efficiency.…”

Section: Introductionmentioning

confidence: 99%