Emission analysis of Sm3+ and Dy3+: Ba3Y2WO9 ceramics

Raju, K.; Raju, C. Nageswara; Sailaja, S.; Dhoble, S.J.; Reddy, B. Sudhakar

doi:10.1016/j.jlumin.2012.08.030

Cited by 17 publications

(7 citation statements)

References 30 publications

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“…Indicative vibrations arising from Te–O bonds are also monitored at approximately 647–805 cm –1 . The IR assignments agree well with those reported for oxides containing Y 3+ and Te 4+ cations. ,, The IR spectra for all four reported compounds are provided in the Supporting Information.…”

Section: Resultssupporting

confidence: 82%

Rich Structural Chemistry in New Alkali Metal Yttrium Tellurites: Three-Dimensional Frameworks of NaYTe₄O₁₀, KY(TeO₃)₂, RbY(TeO₃)₂, and a Novel Variant of Hexagonal Tungsten Bronze, CsYTe₃O₈

Kim

Lee

2014

Inorg. Chem.

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Pure polycrystalline phases and single crystals of four new quaternary alkali metal yttrium tellurites, NaYTe4O10, KY(TeO3)2, RbY(TeO3)2, and CsYTe3O8, have been prepared by solid-state and hydrothermal reactions using A2CO3 (A = Na, K, Rb, and Cs), Y(NO3)3·6H2O, Y2O3, and TeO2 as starting reagents. X-ray diffraction analyses suggest that NaYTe4O10 exhibits a highly symmetric three-dimensional (3D) framework consisting of YO8 square antiprisms and chains of TeO4 polyhedra. Within the framework, six- (6-) and eight-membered ring (8-MR) channels are observed. KY(TeO3)2 and RbY(TeO3)2 are isostructural to each other and reveal another 3D framework with structures containing YO6 octahedra and TeO3 trigonal pyramids with 4-MR and 12-MR channels. CsYTe3O8 shows a hexagonal tungsten bronze (HTB)-like topology composed of hexagonal tungsten oxide-like layers of TeO4 polyhedra and YO6 octahedral linkers with 3-MR and 6-MR channels. Thermal analyses, elemental analyses, and spectroscopic characterizations, such as UV-vis diffuse reflectance and infrared spectra, are presented, as are local dipole moment calculations for the constituent asymmetric polyhedra TeO3 and TeO4.

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Section: Resultssupporting

confidence: 82%

Rich Structural Chemistry in New Alkali Metal Yttrium Tellurites: Three-Dimensional Frameworks of NaYTe₄O₁₀, KY(TeO₃)₂, RbY(TeO₃)₂, and a Novel Variant of Hexagonal Tungsten Bronze, CsYTe₃O₈

Kim

Lee

2014

Inorg. Chem.

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“…As can be seen in Fig. , the measured lifetime of samples significantly decrease with increasing Sm 2 O 3 thickness due to energy transfer between Sm 3+ ions . The results confirmed that concentration quenching occurred when the thicknesses of Sm 2 O 3 films were above 1 nm, which agrees with the luminescence intensity dependence of Sm 2 O 3 films thickness analysis above.…”

Section: Resultssupporting

confidence: 83%

Investigation on photoluminescence properties of CeO₂/Sm₂O₃multilayer films based on Si substrates

Wang

et al. 2013

Phys. Status Solidi B

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CeO2/Sm2O3 multilayer films were deposited on p‐type Si wafers by e‐beam evaporation technology. Four typical photoluminescence peaks of Sm3+ ions located around 572, 615, 656, and 719 nm were observed after the samples were annealed in an oxidizing atmosphere at high temperature. The luminescence properties of CeO2:Sm3+ films were characterized by excitation, emission spectra, and decay curves. In addition, a study of the effects of Sm2O3 thickness and annealing time on the samples' photoluminescence was conducted.

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“…While vibrational bands attributable to Y–O are found around 730–870 cm –1 , those for Se–O vibrations are found between 463 and 484 cm –1 . The assignments are in accordance with those published mixed metal yttrium or selenium oxides. , The IR spectra for all four materials were deposited in the Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

Variable Framework Structures and Centricities in Alkali Metal Yttrium Selenites, AY(SeO₃)₂ (A = Na, K, Rb, and Cs)

Bang

Lee

2014

Inorg. Chem.

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Pure samples of a series of yttrium selenites, AY(SeO3)2 (A = Na, K, Rb, and Cs), were prepared through hydrothermal reactions using A2CO3, Y(NO3)3·6H2O, and SeO2. All four materials have 3D framework structures; however, they exhibit different channel geometries. The three-dimensional framework of NaY(SeO3)2 consists of zigzag chains of vertex-shared YO7 polyhedra and SeO3 linkers. KY(SeO3)2 and RbY(SeO3)2 reveal channels composed of corner-shared YO6 octahedra and SeO3 polyhedra. CsY(SeO3)2 exhibits a highly symmetric cage structure with radially spreading linkages of YO6 and SeO3 groups. Close structural examinations suggest that the cation size and coordination environment significantly influence the backbone architectures and their centricities. Second-harmonic generation (SHG) measurements on the powder sample of NaY(SeO3)2 reveal that the NCS selenite possesses a similar SHG efficiency to that of NH4H2PO4 (ADP).

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Emission analysis of Sm3+ and Dy3+: Ba3Y2WO9 ceramics

Cited by 17 publications

References 30 publications

Rich Structural Chemistry in New Alkali Metal Yttrium Tellurites: Three-Dimensional Frameworks of NaYTe₄O₁₀, KY(TeO₃)₂, RbY(TeO₃)₂, and a Novel Variant of Hexagonal Tungsten Bronze, CsYTe₃O₈

Rich Structural Chemistry in New Alkali Metal Yttrium Tellurites: Three-Dimensional Frameworks of NaYTe₄O₁₀, KY(TeO₃)₂, RbY(TeO₃)₂, and a Novel Variant of Hexagonal Tungsten Bronze, CsYTe₃O₈

Investigation on photoluminescence properties of CeO₂/Sm₂O₃multilayer films based on Si substrates

Variable Framework Structures and Centricities in Alkali Metal Yttrium Selenites, AY(SeO₃)₂ (A = Na, K, Rb, and Cs)

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Emission analysis of Sm3+ and Dy3+: Ba3Y2WO9 ceramics

Cited by 17 publications

References 30 publications

Rich Structural Chemistry in New Alkali Metal Yttrium Tellurites: Three-Dimensional Frameworks of NaYTe4O10, KY(TeO3)2, RbY(TeO3)2, and a Novel Variant of Hexagonal Tungsten Bronze, CsYTe3O8

Rich Structural Chemistry in New Alkali Metal Yttrium Tellurites: Three-Dimensional Frameworks of NaYTe4O10, KY(TeO3)2, RbY(TeO3)2, and a Novel Variant of Hexagonal Tungsten Bronze, CsYTe3O8

Investigation on photoluminescence properties of CeO2/Sm2O3multilayer films based on Si substrates

Variable Framework Structures and Centricities in Alkali Metal Yttrium Selenites, AY(SeO3)2 (A = Na, K, Rb, and Cs)

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Rich Structural Chemistry in New Alkali Metal Yttrium Tellurites: Three-Dimensional Frameworks of NaYTe₄O₁₀, KY(TeO₃)₂, RbY(TeO₃)₂, and a Novel Variant of Hexagonal Tungsten Bronze, CsYTe₃O₈

Rich Structural Chemistry in New Alkali Metal Yttrium Tellurites: Three-Dimensional Frameworks of NaYTe₄O₁₀, KY(TeO₃)₂, RbY(TeO₃)₂, and a Novel Variant of Hexagonal Tungsten Bronze, CsYTe₃O₈

Investigation on photoluminescence properties of CeO₂/Sm₂O₃multilayer films based on Si substrates

Variable Framework Structures and Centricities in Alkali Metal Yttrium Selenites, AY(SeO₃)₂ (A = Na, K, Rb, and Cs)