Now showing items 1-10 of 309
MnO4(3-) NIR luminescence in Ba2SiO4
(Elsevier B.V., 2014)
Luminescent properties of some rare earth phosphates
(Gordon Breach Sci Publ Ltd, 1996-01-01)
Luminescent properties of scandium and yttrium phosphates are discussed and mechanisms involving their emissions proposed.
Energy transfer and frequency upconversion involving triads of Pr3+ ions in (Pr3+, Gd3+) doped fluoroindate glass
Blue and ultraviolet luminescence in (Pr3+, Gd3+) doped fluoroindate glass is studied for excitation in the red region (≈590 nm). Frequency upconversion (UC) is observed due to energy transfer (ET) among three Pr3+ ions ...
Luminescent properties and lattice defects correlation on zinc oxide
(Elsevier B.V., 2001-11-01)
The ZnO luminescent properties are strongly influenced by the preparation method and they are principally related to electronic and crystalline structures. This work reports about the correlation among luminescence properties ...
Integrated X-ray crystallography, optical and computational methods in studies of structure and luminescence of new synthesized complexes of lanthanides with ligands derived from 2,6-diformylpyridine
The reaction of 2,6-diformylpyridine-bis(benzoylhydrazone) [dfpbbh] and 2,6-diformylpyridine-bis(4-phenylsemicarbazone) [dfpbpsc] with lanthanides salts yielded the new chelates complexes [Eu(dfpbpsc-H +) 2]NO 3 (1), ...
Luminescent properties of yttrium diphenylphosphinate activated by europium
(Elsevier B.V., 2006-07-20)
The synthesis and spectroscopic characterization of yttrium diphenylphosphinates doped with europium are reported. The purity of all samples was confirmed by carbon and hydrogen micro analysis, thermal analysis, IR vibrational ...
Europium luminescent polymeric microspheres fabricated by spray drying process
(Springer/plenum Publishers, 2008-07-01)
The spray drying method was used to prepare luminescent microspheres. These microspheres were prepared by spraying an aqueous solution of dextrin and an europium(III) complex with subsequent drying in a hot medium. The ...
Energy upconversion luminescence in neodymium-doped tellurite glass
(Elsevier B.V., 2002-11-18)
Infrared-to-visible upconversion luminescence emission in Nd3+-doped 60TeO(2)-10GeO(2)-10K(2)O-10Li(2)O-10Nb(2)O(5) tellurite glasses under cw excitation around 800 nm is investigated. Blue (430, and 475 nm), green (5 0 ...
Cr3+ and Cr4+ luminescence in glass ceramic silica
(Elsevier B.V., 2008-11-01)
This paper reports on the effect of glass ceramic silica matrix on [CrO4](4-) and Cr2O3 NIR and visible luminescence. Chromium-containing silica was obtained by precipitation from water-glass and chromium nitrate acid ...
Luminescent nano-composites generated from a spray
(Elsevier B.V., 2008-11-01)
The spray-pyrolysis (SP) synthesis technique has been employed to obtain SiO2:Eu3+ and gamma-AlOOH:Eu3+, It was possible to obtain sub-micrometric spherical particles of SiO2 with luminescent Eu3+ ions bonded to the silica ...