Enhanced luminescence of SrSi2O2N2:Eu2+ phosphors by codoping with Ce3+, Mn2+, and Dy3+ ions

Liu, Ru‐Shi; Liu, Yu Huan; Bagkar, Nitin; Hu, Shu Fen

doi:10.1063/1.2768916

Cited by 102 publications

(64 citation statements)

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“…But it has some problems, such as poor color-rendering index and low thermal quenching temperature [16]. The multi-phased (red, blue and green) phosphors which possess superior color uniformity and high color rendering index were tuned to emit white light under the excitation of UV-LEDs [17,18]. However, the reabsorption of blue emission by the green-or red-emitting phosphors results in low luminous efficiency.…”

Section: Introductionmentioning

confidence: 99%

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

Wang

Tie

Wan

2015

Ceramics International

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Section: Introductionmentioning

confidence: 99%

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

Wang

Tie

Wan

2015

Ceramics International

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“…A traditional method is to blend a blue LED with a yellow-emitting phosphor, such as Y 3 Al 5 O 12 :Ce 3? [6]. This method is almost easy to use, and the device has been commercialized.…”

Section: Introductionmentioning

confidence: 99%

Enhanced photoluminescence of Li3Ba2Gd3 (MoO4)8:Eu3+ red phosphor synthesized by mechanochemically assisted direct solid state reaction method at room temperature

Peter¹,

Banu

2014

J Mater Sci: Mater Electron

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For the first time, Li 3 Ba 2 Gd 3-x (MoO 4 ) 8 :x Eu 3? (x = 0.01, 0.03, 0.05, 0.07 and 0.09 mol) red phosphor nanoparticles were prepared using the simple mechanochemically assisted direct solid state reaction method at room temperature and the luminescence effects as a function of Eu 3? ion concentration were studied. The characteristics of the phosphor materials were investigated using X-ray diffraction, Fourier transform infrared spectroscopy, photoluminescence and kinetic decay. For 7 mol% of Eu 3? concentration, the phosphor exhibits a strong excitation peak at 395 nm signifying a strong absorption. The PL emission spectra of Li 3 Ba 2 Gd 3 (MoO 4 ) 8 :0.07 Eu 3? phosphors exhibited an intense peak at 615 nm (red) which relates to 5 D 0 ? 7 F 2 transition of Eu 3? . The most favourable Eu 3? concentration in Li 3 Ba 2 Gd 3 (MoO 4 ) 8 phosphors for intensified red emission results for 7 mol% and above this concentration, the emission intensity falls off as a result of quenching effect. The CIE color coordinates of the Li 3 Ba 2 Gd 3 (MoO 4 ) 8 :0.07 Eu 3? red phosphor coexist very well with the standard values of NTSC. The red emission intensity of the as prepared Li 3 Ba 2 Gd 3 (MoO 4 ) 8 :0.07 Eu 3? red phosphor is 3.2 times better than that of the commercial Y 2 O 2 S:Eu 3? red phosphor prepared by the conventional solid state reaction method.

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“…After sintering, the sample was cooled down to room temperature and then reground (details of the procedure follow those of Ref. 34). The obtained sample was of white color with a light greenish shade.…”

Section: Methodsmentioning

confidence: 99%

Equation of state for Eu-doped SrSi2O2N2

Ermakova

Paszkowicz

Kamińska

et al. 2014

The Journal of Chemical Physics

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α-SrSi2O2N2 is one of the recently studied oxonitridosilicates applicable in optoelectronics, in particular in white LEDs. Its elastic properties remain unknown. A survey of literature shows that, up to now, nine oxonitridosilicate materials have been identified. For most of these compounds, doped with rare earths and manganese, a luminescence has been reported at a wavelength characteristic for the given material; all together cover a broad spectral range. The present study focuses on the elastic properties of one of these oxonitridosilicates, the Eu-doped triclinic α-SrSi2O2N2. High-pressure powder diffraction experiments are used in order to experimentally determine, for the first time, the equation of state of this compound. The in situ experiment was performed for pressures ranging up to 9.65 GPa, for Eu-doped α-SrSi2O2N2 sample mounted in a diamond anvil cell ascertaining the hydrostatic compression conditions. The obtained experimental variation of volume of the triclinic unit cell of α-SrSi2O2N2:Eu with rising pressure served for determination of the Birch-Murnaghan equation of state. The determined above quoted bulk modulus is 103(5) GPa, its first derivative is 4.5(1.1). The above quoted bulk modulus value is found to be comparable to that of earlier reported oxynitrides of different composition.

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Enhanced luminescence of SrSi2O2N2:Eu2+ phosphors by codoping with Ce3+, Mn2+, and Dy3+ ions

Cited by 102 publications

References 10 publications

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

White light emitting from YVO4/Y2O3:Eu3+,Bi3+ composite phosphors for UV light-emitting diodes

Enhanced photoluminescence of Li3Ba2Gd3 (MoO4)8:Eu3+ red phosphor synthesized by mechanochemically assisted direct solid state reaction method at room temperature

Equation of state for Eu-doped SrSi2O2N2

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