Tunable emissions via the white region from Sr2Gd8(SiO4)6O2:RE3+ (RE3+: Dy3+, Tm3+, Eu3+) phosphors

By activation of the new host lattices Ba2La2B2+Te2O12 (B = Zn, Mg) with trivalent rare earth ions Ln3+ = Pr. Sm, Eu, Tb, Dy, Ho, Tm an emission in the visible region is observed. The influence of the electronic structure and concentration on the relative emission efficiency as well as the host lattice participation in the energy transfer processes are discussed.

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Kathodolumineszenz der Seltenerd-aktivierten Wirtsgitter Sr3La2W2O12 und Ca2La0,5Na0,5WO6

Zeitschrift für Naturforschung A ◽

10.1515/zna-1985-0515 ◽

1985 ◽

Vol 40 (5) ◽

pp. 503-507 ◽

Cited By ~ 6

Author(s):

R. Braun ◽

R. Otto ◽

W. Wischert ◽

S. Kemmler-Sack

Keyword(s):

Electronic Structure ◽

Energy Transfer ◽

Rare Earth ◽

Visible Region ◽

Host Lattice ◽

Rare Earth Ions ◽

Emission Efficiency ◽

Transfer Processes ◽

Trivalent Rare Earth ◽

Host Lattices

By activation of the host lattices Sr3La2W2O12 and Ca2La0,5Na0,5WO6 with the trivalent rare earth ions Ln3+ = Pr, Sm, Eu, Tb, Dy, Ho, Er a cathodoluminescence in the visible region is obtained. The influence of the electronic structure and concentration of the activator on the relative emission efficiency as well as the host lattice participation in the energy transfer processes are discussed.

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Photostimulated Luminescence Studies of Electron Trapping Materials SrS:Eu2+,RE (RE= Dy3+,Yb3+,Pr3+,Ho3+,Tm3+)

Materials Science Forum ◽

10.4028/www.scientific.net/msf.663-665.264 ◽

2010 ◽

Vol 663-665 ◽

pp. 264-267

Author(s):

Hai Yan Du ◽

Zhen Xing Liu ◽

Jia Yue Sun

Keyword(s):

Rare Earth ◽

Rare Earth Ions ◽

Fluorescence Properties ◽

Electron Trapping ◽

Photostimulated Luminescence ◽

Trivalent Rare Earth ◽

Sun Light ◽

Co Doped

Trivalent rare-earth ions, Dy3+, Yb3+, Pr3+, Ho3+, Tm3+, have been investigated as the co-doped auxiliary sensitizer for the electron trapping materials SrS:Eu2+ in order to enhance the fluorescence properties. It is found that Dy3+ and Ho3+ has the optimum photoluminescence stimulated luminescence (PSL) effect among the selected trivalent rare-earth ions. All the SrS: Eu2+ samples coped by different trivalent rare-earth ions can be stimulated by 980 nm laser after exposing to the conventional sun light, and they emit PSL with the peak located at 615 nm. The present research also indicates that some co-doped rare earth ions can increase fluorescence intensities of the traditional electron trapping materials SrS: Eu2+.

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Photolumineszenz und Energietransfer in Seltenerd-aktivierten Granat Gd3Te2Li3O12 / Photolwninescence and Energy Transfer in the Rare Earth Activated Garnet Gd3Te2Li3O12

Zeitschrift für Naturforschung A ◽

10.1515/zna-1984-0513 ◽

1984 ◽

Vol 39 (5) ◽

pp. 490-494 ◽

Cited By ~ 5

Author(s):

B. Köngeter ◽

S. Kemmler-Sack

Keyword(s):

Energy Transfer ◽

Rare Earth ◽

Host Lattice ◽

Rare Earth Ions ◽

Visible Emission ◽

Luminescence Properties ◽

Trivalent Rare Earth ◽

The Rare Earth

By activation of the cubic garnet host lattice Gd3Te2Li3O12 with trivalent rare earth ions the most intense visible emission is observed for Ln3+ = Eu, Tb. Energy transfer from Gd3+ to Sm3+, Eu3+ or Dy3+, from Tb3+ to Eu3+ and from Er3+ to Tm3+ has been found to occur. The luminescence properties are strongly influenced by the substitution of Te6+ by W6+ (systems Gd3-xLnxTe2-yWyLi3O12)

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Preparation and tunable luminescence of CaCO3:Eu3+,Dy3+ phosphors

Functional Materials Letters ◽

10.1142/s1793604714500386 ◽

2014 ◽

Vol 07 (04) ◽

pp. 1450038 ◽

Cited By ~ 6

Author(s):

Yanwei Dong ◽

Ming Kang ◽

Ping Zhang ◽

Qijun Cheng ◽

Jie Wang

Keyword(s):

Rare Earth ◽

Uv Light ◽

Host Lattice ◽

Rare Earth Ions ◽

Precipitation Method ◽

Scanning Calorimetry ◽

Chromaticity Coordinates ◽

Co Precipitation ◽

Co Doped ◽

The Rare Earth

Phosphors based on calcium carbonate, co-doped with various Eu 3+ and Dy 3+ concentrations were prepared by microwave co-precipitation method. The prepared phosphors were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), thermogravimetry and differential scanning calorimetry (TG-DSC) and photoluminescence and photoluminescence excitation (PL-PLE) spectroscopy. Results showed that Dy 3+ and Eu 3+ ions were uniformly introduced into the host lattice of CaCO 3 taking the place of Ca 2+ ions. Under the excitation at 382 nm, the emission peak wavelengths were at 487 nm (4 F 9/2 → 6 H 15/2 of Dy 3+), 576 nm (4 F 9/2 → 6 H 13/2 of Dy 3+), and 614 nm (5 D 0 → 7 F 2 of Eu 3+). The luminescent intensities and emitting colors of Eu 3+- Dy 3+ co-doped CaCO 3 phosphors could be controlled by UV–violet excitations wavelengths or the rare-earth ions concentrations of Eu 3+ and Dy 3+ in phosphors. The chromaticity coordinates and photographs of samples under UV light showed the changes of the luminescence color intuitively through the varing UV–violet excitations wavelengths or the rare-earth ions concentrations of Eu 3+ and Dy 3+.

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Photolumineszenz und sensibilisierte IR-Emission der dreiwertigen Seltenen Erden in Ca3La2Te2O12

Zeitschrift für Naturforschung A ◽

10.1515/zna-1985-0708 ◽

1985 ◽

Vol 40 (7) ◽

pp. 699-705 ◽

Cited By ~ 1

Author(s):

H.-D. Autenrieth ◽

B. Kottmann ◽

S. Kemmler-Sack

Keyword(s):

Rare Earth ◽

Diffuse Reflectance ◽

Near Infrared ◽

Infrared Region ◽

Host Lattice ◽

Rare Earth Ions ◽

New Host ◽

Trivalent Rare Earth ◽

Near Infrared Region ◽

Ir Emission

By activation of the new host lattice Ca3La2Te2O12 with trivalent rare earth ions an emission in the visible (Ln3+=Sm, Eu, Tb, Dy, Ho, Er, Tm) or near infrared region (Nd, Ho, Er, Tm, Yb) is observed. Energy transfer from Nd3+ to Yb3+ , from Er3+, Yb3+ to Ho3+ and from Yb3+ to Tm3+ has been found to occur. The excitation, emission and diffuse reflectance spectra are analyzed.

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Sensibilisierte IR-Emission der dreiwertigen Seltenen Erden in Sr3La2W2O12 / Sensitized IR Emission of the Trivalent Rare Earths in Sr3La2W2O12

Zeitschrift für Naturforschung A ◽

10.1515/zna-1984-1117 ◽

1984 ◽

Vol 39 (11) ◽

pp. 1115-1119

Author(s):

R. Braun ◽

S. Kemmler-Sack

Keyword(s):

Energy Transfer ◽

Rare Earth ◽

Rare Earths ◽

Host Lattice ◽

Rare Earth Ions ◽

Trivalent Rare Earth ◽

Ir Emission

By activation of the host lattice Sr3La2W2O12 with the trivalent rare earth ions Nd, Ho. Er. Tm and Yb an intense IR emission is observed, which can be sensitized by energy transfer from Nd3+ to Yb3+, from Er3+ to Ho3+ or Tm3+, from Tm3+ to Ho3+, and from Yb3+ to Ho3+ or Tm3+. For all other couples of trivalent rare earth ions no significant energy transfer is detected.

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Kathodolumineszenz der Seltenerd-aktivierten Granate Gd3Te2Li3O12 und Y3Te2Li3O12

Zeitschrift für Naturforschung A ◽

10.1515/zna-1986-1009 ◽

1986 ◽

Vol 41 (10) ◽

pp. 1228-1232 ◽

Cited By ~ 1

Author(s):

R. Otto ◽

S. Kemmler-Sack

Keyword(s):

Electronic Structure ◽

Energy Transfer ◽

Rare Earth ◽

Visible Region ◽

Host Lattice ◽

Rare Earth Ions ◽

Emission Efficiency ◽

Transfer Processes ◽

Trivalent Rare Earth

By activation of the host Gd3Te2Li3O12 with the trivalent rare earth ions Ln3+ = Pr, Sm, Eu, Tb-Tm and of Y3Te2Li3O12 with Ln3+ = Pr, Eu, Tb a cathodoluminescence in the visible region is obtained. The influence of the electronic structure and concentration of the activator on the relative emission efficiency as well as the host lattice participation in the energy transfer processes are discussed.

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