Effect of Eu3+ Ions on the Physical, Optical and Luminescence Properties of Aluminium Phosphate Glasses

2018 ◽  
Vol 766 ◽  
pp. 122-126
Author(s):  
Natthakridta Chanthima ◽  
Yaowaluk Tariwong ◽  
Hong Joo Kim ◽  
Jakrapong Kaewkhao ◽  
Narong Sangwaranatee
Keyword(s):  
Room Temperature ◽  
Emission Spectra ◽  
Phosphate Glasses ◽  
Solid State Lighting ◽  
Europium Oxide ◽  
Luminescence Properties ◽  
Excitation Wavelength ◽  
Aluminium Phosphate ◽  
Lithium Aluminium ◽  
Volume Measurements

The physical, optical and luminescence properties of lithium aluminium phosphate glasses different doping europium oxide have been investigated to evaluate their properties for solid-state lighting applications. The density and molar volume measurements were carried out at room temperature. The absorption spectra were investigated in the UV-Vis-NIR region from 250 to 2500 nm. The emission spectra, excited with 394 nm excitation wavelength showed four emission transitions corresponding to 5D0→7F1 (591 nm), 5D0→7F2 (612 nm), 5D0→7F3 (648 nm) and 5D0→7F4 (698 nm). The optimal concentration of Eu2O3 in lithium aluminium phosphate glasses was 1.00 mol%.

Preparation and Properties of La2O3-CaO-P2O5 Glasses Doped with Eu3+ Ions

2016 ◽  
Vol 675-676 ◽  
pp. 376-379 ◽  
Author(s):  
Narun Luewarasirikul ◽  
Piyachat Meejitpaisan ◽  
Jakrapong Kaewkhao
Keyword(s):  
Calcium Phosphate ◽  
Molar Volume ◽  
Absorption Spectra ◽  
Room Temperature ◽  
Emission Spectra ◽  
Phosphate Glasses ◽  
Excitation Wavelength ◽  
Melt Quenching ◽  
Volume Measurements ◽  
Doped Glasses

Lanthanum calcium phosphate glasses doped with Eu3+ ions in compositions 20La2O3:10CaO:(70-x)P2O5:xEu2O3 (where x = 0.05, 0.10, 0.50 and 1.50 mol%) were prepared by melt-quenching technique. The density and molar volume measurements were carried out at room temperature. The absorption spectra were investigated in the UV-Vis-NIR region from 200 to 2500 nm. The emission spectra of Eu3+-doped glasses centered at 590 nm (5D0→7F1), 612 nm (5D0→7F2), 652 nm (5D0→7F3) and 699 nm (5D0→7F4) have been observed with 393 nm excitation wavelength.

Luminescence Properties of Tm3+ /Dy3+ Co-Doped Zinc-Aluminum Phosphate Glasses for White LED

2012 ◽  
Vol 602-604 ◽  
pp. 821-828 ◽  
Author(s):  
C.T. Lin ◽  
S.W. Yung ◽  
J. Lin ◽  
W.S. Chen ◽  
C.H. Lai ◽  
...  
Keyword(s):  
Light Emission ◽  
Emission Spectra ◽  
Aluminum Phosphate ◽  
Phosphate Glasses ◽  
Oscillator Strengths ◽  
Luminescence Properties ◽  
Excitation Wavelength ◽  
Intensity Parameters ◽  
Uv Excitation ◽  
Co Doped

Tm3+ and Dy3+ co-doped zinc-aluminum phosphate glasses were prepared in this study. Judd-Ofelt theory has been used to evaluate the three intensity parameters Ω2, Ω4 and Ω6 form the experimental oscillator strengths. The luminescence properties were investigated by excitation and emission spectra. White light emission could be induced by combined blue and yellow bands under UV excitation, and the variety of excitation wavelength could change the luminescence color.

Luminescence properties and Judd-Ofelt analysis of Sm 3+ doped lithium aluminium phosphate glasses

2018 ◽  
Vol 5 (7) ◽  
pp. 15034-15039 ◽  
Author(s):  
N. Chanthima ◽  
Y. Tariwong ◽  
M. Djamal ◽  
J. Kaewkhao ◽  
N.W. Sangwaranatee ◽  
...  
Keyword(s):  
Phosphate Glasses ◽  
Luminescence Properties ◽  
Aluminium Phosphate ◽  
Lithium Aluminium

Investigation of Luminescence Properties of Dy3+ Doped Alkaline Earth Oxides Barium Phosphate Glasses

2018 ◽  
Vol 879 ◽  
pp. 27-31 ◽  
Author(s):  
Natthakridta Chanthima ◽  
Yaowaluk Tariwong ◽  
Thanapong Sareein ◽  
Jakrapong Kaewkhao ◽  
Nisakorn W. Sangwaranatee
Keyword(s):  
Alkaline Earth ◽  
Near Infrared ◽  
Emission Spectra ◽  
Phosphate Glasses ◽  
Luminescence Properties ◽  
Excitation Wavelength ◽  
Photoluminescence Spectra ◽  
Melt Quenching ◽  
Absorption Bands ◽  
Light Region

In this work, the optical and luminescence properties of Dy2O3 doped barium phosphate glass with different alkaline earth oxides (MgO, CaO and SrO) have been investigated. The glass samples were prepared by the melt-quenching technique at the melting temperature of 1200 °C. The absorption spectra of glasses were recorded in the ultraviolet, visible and near infrared (UV-Vis-NIR) region. The absorption bands centered at 385, 424, 452, 472, 754, 803, 901, 1093, 1273 and 1683 nm, respectively have been observed. The emission spectra of glass samples centered at 482, 574, 662 and 751 nm, respectively have been observed with 350 nm excitation wavelength. The result of radioluminescence spectra were slightly different with photoluminescence spectra. The coordinate of emitting color (x, y) for 350 excitation wavelength is 0.3781 and 0.4252, respectively which is located in white light region of CIE diagram.

Physical, optical and luminescence properties of Sm 3+ doped lithium aluminium phosphate glass system

2018 ◽  
Vol 5 (7) ◽  
pp. 15066-15071 ◽  
Author(s):  
N. Chanthima ◽  
Y. Tariwong ◽  
M. Djamal ◽  
J. Kaewkhao ◽  
N. Sangwaranatee
Keyword(s):  
Phosphate Glass ◽  
Glass System ◽  
Luminescence Properties ◽  
Aluminium Phosphate ◽  
Lithium Aluminium

Effect of alkali oxide on optical and luminescence properties of Sm 3+ doped aluminium phosphate glasses

2018 ◽  
Vol 5 (6) ◽  
pp. 13891-13895 ◽  
Author(s):  
N. Sangwaranatee ◽  
N. Chanthima ◽  
Y. Tariwong ◽  
J. Kaewkhao
Keyword(s):  
Phosphate Glasses ◽  
Luminescence Properties ◽  
Alkali Oxide ◽  
Aluminium Phosphate

Synthesis, Characterization and Luminescence Properties of Rod-Like LaPO4:Eu3+ Nanostructures

2016 ◽  
Vol 16 (4) ◽  
pp. 4012-4015 ◽  
Author(s):  
Li Peng ◽  
Liu Yun ◽  
Shi Xiaolei ◽  
Guo Yaxin ◽  
Zhu Gangqiang
Keyword(s):  
Large Scale ◽  
Room Temperature ◽  
Emission Spectra ◽  
Luminescence Properties ◽  
X Ray ◽  
Sem And Tem ◽  
Effects Of Ph ◽  
Composition Structure ◽  
20 Nm ◽  
Fluorescence Spectrometer

Large-scale, rod-like nanostructures of LaPO4:Eu3+ phosphors were synthesized using a simple hydrothermal method. The phase composition, structure and morphology of the final products were characterized by XRD, FE-SEM and TEM. Highly crystalline material was obtained as confirmed by X-ray powder diffraction measurements. The FE-SEM and TEM observations indicate that the obtained LaPO4:Eu3+ nanorods have a diameter of about 10–20 nm, and a length of about 100–600 nm. Meanwhile, the excitation and emission spectra of the products at room temperature were measured using a fluorescence spectrometer. The effects of pH and Eu3+-doping on the morphology and luminescence properties of the as-prepared powders were investigated. The photoluminescence (PL) spectra show that the emission intensity of the LaPO4:Eu3+ phosphors improved with increases in concentrations of Eu3+ from 3 mol% to 14 mol%, and then decreased for higher concentrations.

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