Now showing items 21-30 of 34
Synthesis, growth process and photoluminescence properties of SrWO4 powders
(Journal of Colloid and Interface Science, 2009-02-01) [Artigo]
SrWO4 powders were synthesized by the co-precipitation method and processed in a microwave-hydrothermal (MH) at 140 degrees C for different times. The obtained powders were analyzed by X-ray diffraction (XRD), micro-Raman ...
CaTiO3:Eu3+ obtained by microwave assisted hydrothermal method: A photoluminescent approach
(Optical Materials, 2010-07-01) [Artigo]
Europium(III) Concentration Effect on the Spectroscopic and Photoluminescent Properties of BaMoO4:Eu
(Journal of Fluorescence, 2009-05-01) [Artigo]
BaMoO4:Eu (BEMO) powders were synthesized by the polymeric precursor method (PPM), heat treated at 800 A degrees C for 2 h in a heating rate of 5 A degrees C/min and characterized by powder X-ray diffraction patterns (XRD), ...
A new processing method of CaZn2(OH)(6)center dot 2H(2)O powders: Photoluminescence and growth mechanism
(Solid State Sciences, 2009-12-01) [Artigo]
In this communication, we report on the formation of calcium hexahydroxodizincate dehydrate, CaZn2(OH)(6)center dot 2H(2)O (CZO) powders under microwave-hydrothermal (MH) conditions. These powders were analyzed by X-ray ...
Disorder-dependent photoluminescence in Ba0.8Ca0.2TiO3 at room temperature
(Journal of Luminescence, 2009-07-01) [Artigo]
The photoluminescence (PL) emission in structurally disordered Ba0.8Ca0.2TiO3 (BCT20) powders was observed at room temperature with laser excitation at lines 355 and 460 nm. The structural evolution perovskite-like titanate ...
Microstructure, dielectric properties and optical band gap control on the photoluminescence behavior of Ba[Zr0.25Ti0.75]O-3 thin films
(Journal of Sol-Gel Science and Technology, 2009-01-01) [Artigo]
Ba[Zr0.25Ti0.75]O-3 (BZT) thin films were synthesized by the complex polymerization method and heat treated at 400 A degrees C for different times and at 700 A degrees C for 2 h. These thin films were analyzed by X-ray ...
Effect of pressure-assisted thermal annealing on the optical properties of ZnO thin films
(Luminescence, 2012-12-21) [Artigo]
ZnO thin films were prepared by the polymeric precursor method. The films were deposited on silicon substrates using the spin-coating technique, and were annealed at 330°C for 32h under pressure-assisted thermal annealing ...
Structure and optical properties of [Ba1-xY2x/3](Zr0.25Ti0.75)O-3 powders
(Solid State Sciences, 2010-07-01) [Artigo]
[Ba1-xY2x/3](Zr0.25Ti0.75)O-3 powders with different yttrium concentrations (x = 0, 0.025 and 0.05) were prepared by solid state reaction. These powders were analyzed by X-ray diffraction (XRD). Fourier transform Raman ...
Red shift and higher photoluminescence emission of CCTO thin films undergoing pressure treatment
(Journal of Alloys and Compounds, 2014-01-01) [Artigo]
CCTO thin films were deposited on Pt(1 1 1)/Ti/SiO2/Si substrates using a chemical (polymeric precursor) and pressure method. Pressure effects on CCTO thin films were evaluated by X-ray diffraction (XRD), field emission ...
Indium hydroxide nanocubes and microcubes obtained by microwave-assisted hydrothermal method
(Journal of Alloys and Compounds, 2010-05-14) [Trabalho apresentado em evento]
Single crystalline indium hydroxide (In(OH)(3)) architectures were prepared by a rapid and efficient microwave-assisted hydrothermal (MAH) method using indium chloride as the precursor Nanostructures were obtained at a low ...