Buscar
Mostrando ítems 1-10 de 332
Preparation and photoluminescence characteristics of In(OH) 3:xTb3+ obtained by Microwave-Assisted Hydrothermal method
(2013-03-15)
Crystalline terbium-doped indium hydroxide structures were prepared by a rapid and efficient Microwave-Assisted Hydrothermal (MAH) method. Nanostructures were obtained at a low temperature. FE-SEM images confirm that these ...
Influence of microwave energy on structural and photoluminescent behavior of CaTiO3 powders
(Elsevier B.V., 2008-08-01)
Calcium titanate, CaTiO3 powders were prepared by the polymeric precursor method and annealed at different temperatures for 2 h in a conventional furnace and for 30 min on an adapted microwave oven. The effect of microwave ...
Intense photoluminescence emission at room temperature in calcium copper titanate powders
(2013-05-01)
A study was undertaken about the structural and photoluminescent properties at room temperature of CaCu3Ti4O12 (CCTO) powders synthesized by a soft chemical method and heat treated between 300 and 800 °C. The decomposition ...
Photoluminescence properties and synthesis of a PZT mesostructure obtained by the microwave-assisted hydrothermal method
(Elsevier B.V. Sa, 2012-01-25)
Micro-cube-shaped lead zirconate titanate was synthesized using the microwave-assisted hydrothermal method. Photoluminescence and field emission scanning electron microscopy were used for monitoring the formation of ...
Photoluminescence in amorphous PLZ
(Elsevier B.V., 2003-01-01)
Amorphous and crystalline powder of PLZ was prepared by using the polymeric precursor method. TGA-DSC (Thermal analysis and Differential Scanning Calorimetry) shows the decomposition of polymeric resin, an amorphous phase ...
Photoluminescence of bulks and thin films of Eu3+-doped organic/inorganic hybrids
(Elsevier B.V. Sa, 2008-02-28)
Organic-inorganic hybrids formed by polyether-based chains grafted to both ends to a siliceous backbone through urea cross-linkages (-NHC=O)NH-), named di-ureasil, have been used as host for incorporation of Eu3+ in the ...
Effect of heat treatment on the generation of structural defects in LaTaO4 ceramics and their correlation with photoluminescent properties
(Elsevier B.V. Sa, 2011-09-15)
The synthesis, structure characterization, as well as luminescence properties of LaTaO4 ceramics were investigated in this study. The materials were prepared through the Pechini method. The characterization techniques, ...
Conditions giving rise to intense visible room temperature photoluminescence in SrWO4 thin films: the role of disorder
(Elsevier B.V., 2005-06-06)
The nature of intense visible photoluminescence at room temperature of SrWO4 (SWO) non-crystalline thin films is discussed in the light of experimental results and theoretical calculations. The SWO thin films were synthesized ...
Photoluminescence at room temperature in amorphous SrTiO3 thin films obtained by chemical solution deposition
(Elsevier B.V., 2003-01-15)
Intense photoluminescence in highly disordered strontium titanate amorphous thin films prepared by the polymeric precursor method was observed at room temperature (300 K). The luminescence spectra of SrTiO3 amorphous thin ...
Room temperature photoluminescence of BCT prepared by Complex Polymerization Method
(Elsevier B.V., 2010-01-01)
It was used the Complex Polymerization Method to synthesize barium calcium titanate powders (BCT). Crystalline Ba(0.8)Ca(0.2)TiO(3) perovskite-type phase could be identified by X-ray diffraction and confirmed by Raman ...