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Rare Earths Complexes in Sol Gel Glasses
R. Reisfeld
Department of Inorganic and Analytical Chemistry, The Hebrew University, Jerusalem, Israel
Eu3+ And Er3+ Doped SiO2 - TiO2 Sol-Gel Films For Active Planar Waveguides
L.Q. Minh1, N.T. Huong1, C. Barthou2, P. Benalloul2,W. Strek3 and T.K.Anh1
1 Institute of Materials Science, NCST of Vietnam, Hanoi, Vietnam
2 Laboratoire d'Optique des Solides UMR 7601,Université Pierre et Marie Curie, Paris, France
3 Institute of Low Temperature and Structure Research,
Polish Academy of Sciences, Wrocław, Poland
Abstract
Sol-gel films of SiO2 - TiO2 doped with Eu3+ or Er3+ ions were prepared by spin-coating with a variety of molar concentration ratios of tetraethoxysilane (TEOS) and titanium isopropoxide (TPOT). The ratios of SiO2 - TiO2 are 90/10, 85/15, 80/20, 75/25 and the concentrations of Eu and Er ions varied from 10-3 to 5.10-2 mol %. Silica-titania films annealed from 150 up to 900°C decreased their thickness from 300 to 150 nm and increased the refractive index from 1.49 to 1.62. The multilayer (6-8 layers) silica-titania thin films with thickness about 1.2 - 1.6 mm have been developed in order to make highly doped Eu3+ or Er3+ planar wave guides on silicon substrates. Luminescence spectra, lifetimes as well as FTIR and micro-Raman spectra have been measured. The influence of active ion concentrations and annealing temperature on the luminescence properties and the structure of thin films were investigated.
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Download article (PDF)Preparation and Properties of Colloidal Nanosize Silica Dioxide for Polishing of Monocrystalline Silicon Wafers
V.E. Gaishun, O.I. Tulenkova, I.M. Melnichenko, S.A. Baryshnin, Y.A.Potapenok, A.P. Xlebokazov, W. Strek1
AMRL, F. Skorina Gomel State University, Gomel, Belarus
1Institute for Low Temperature and Structure Research, Polish Academy of Sciences, Wroclaw, Poland
An Incorporation of Copper and Its Oxides and Chalcogenides into Silica Sol-Gel Materials
V.S. Gurin1, A.A. Alexeenko2, V.B. Prakapenka3, D.L. Kovalenko4, K.V. Yumashev5, P.V. Prokoshin5
1Physico-Chemical Research Institute, Belarusian State University, Minsk,
2Gomel State Technical University, Gomel, Belarus;
3CARS, University of Chicago, USA
4Advanced Materials Research Laboratory, Gomel State University, Gomel, Belarus
5International Laser Centre, BSPA, Minsk, Belarus
Humidity Dependencies of Porous Sol-Gel and Silica Glass Linear Sizes
S.A.Geveluyk, I.K.Doycho, L.P.Prokopovich, E.Rysiakiewicz-Pasek1, E.D.Safronsky
Odessa National Mechnikov-University, Ukraine
1Institute of Physics, Wroclaw University of Technology, Wroclaw, Poland
The Role of Fluorine Ions in The Formation of Silica Gel Structure and Gel-Glass
E.N.Poddenezhny, A.A.Boika1, B.V.Plusch, M.N.Kapshai, I.P.Kravchenko, I.M.Melnichenko
Gomel State University, Gomel, Belarus
1Gomel State Technical University, Gomel, Belarus;
Enzyme Electrodes Constructed on Basis of Oxygen Electrode with Oxidases Immobilised by Sol-Gel Technique
Małgorzata Przybyt, Beata Białkowska
Technical University of ŁódĽ, Department of Food Chemistry and Biotechnology, Institute of General Food Chemistry, ŁódĽ, Poland
Preparation, Spectroscopy and Morphology of Nd:YAG Nanostructures
D. Hreniak, W. Stręk and P. Mazur*
Institute for Low Temperature and Structure Research,
Polish Academy of Sciences, Wrocław, Poland
*Chemistry Department, Opole University, Opole, Poland
Determination of the Photodynamic Activity of Porphyrins: Potential Photosensitizers for Treatment of Age-related Macular Degeneration
Cláudio R. Neri, Ana Paula J. Maestrin Prado,
Anderson O. Ribeiro, Osvaldo A. Serra, Yassuko Iamamoto
Laboratory of Rare Earths/Bioinorganic, Department of Chemistry, FFCLRP
University of São Paulo, Brazil
The Bismuth - Doping Effect on the Jahn-Teller Phase Transition in CsDy(MoO4)2 Crystal
S.S.Gerashchenko1, O.V.Miloslavskaya1, Yu.N.Kharchenko1, V.I.Kut'ko1,
N.M.Nesterenko1 L.Macalik2, K.Hermanowicz2, M. M±czka2 and J.Hanuza2,3
1 B.Verkin Institute for Low Temperature Physics & Engineering NAScU, Kharkiv, Ukraine
2 Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Wrocław, Poland
3 Department of Bioorganic Chemistry, Faculty of Engineering and Economics, University of Economics, Wrocław, Poland
A New Precursor of Molecular Magnets (Ph4P)2[ReCl5(tcm)]
J. Małecka, A. Kochel, J. Mroziński
Faculty of Chemistry, University of Wrocław, Wrocław, Poland
