Buscar
Mostrando ítems 31-40 de 1200
First principles calculations on the origin of violet-blue and green light photoluminescence emission in SrZrO3 and SrTiO3 perovskites
(Springer, 2009-11-01)
The photoluminescence (PL) emission from SrZrO3 (SZ) and SrTiO3 (ST) crystalline, quasi-crystalline, and quasi-amorphous samples, prepared by the polymeric precursor method, was examined by ab initio quantum mechanical ...
Morphology and Blue Photoluminescence Emission of PbMoO4 Processed in Conventional Hydrothermal
(Amer Chemical Soc, 2009-04-09)
PbMoO4 micro-octahedrons were prepared by the coprecipitation method at room temperature without the presence of surfactants and processed in a conventional hydrothermal at different temperatures (from 60 to 120 degrees ...
Tuning multicolor emission in AgNCs/Tm3+/Mn2+-doped fluorophosphate glasses
(2020-05-01)
Herein we report the synthesis of highly-doped silver nanocluster in fluorophosphate glasses through the melting-quenching method in order to achieve sensitization with Tm3+ and Mn2+ ions. Blue and red emission belonging ...
Synthesis, characterization and spectroscopic investigation of new tetrakis(acetylacetonato)thulate(III) complexes containing alkaline metals as countercations
(ELSEVIER SCIENCE BV, 2011)
In this work a series of tetrakis complexes C[Tm(acac)(4)] where C(+) = Li(+) Na(+) and K(+) countercations and acac = acetylacetonate ligand were synthesized and characterized for photoluminescence investigation The ...
HOT DUST OBSCURED GALAXIES WITH EXCESS BLUE LIGHT: DUAL AGN OR SINGLE AGN UNDER EXTREME CONDITIONS?
(2016)
Hot dust-obscured galaxies (Hot DOGs) are a population of hyper-luminous infrared galaxies identified by the Wide-field Infrared Survey Explorer (WISE) mission from their very red mid-IR colors, and characterized by hot ...
Mechanisms behind blue, green, and red photoluminescence emissions in CaWO4 and CaMoO4 powders
(American Institute of Physics (AIP), 2007-07-30)
A combined experimental and theoretical study was conducted to analyze the photoluminescence (PL) properties of ordered and disordered CaWO4 (CW) and CaMoO4 (CM) powders. Two mechanisms were found to be responsible for ...
Mechanisms behind blue, green, and red photoluminescence emissions in CaWO4 and CaMoO4 powders
(American Institute of Physics (AIP), 2007-07-30)
A combined experimental and theoretical study was conducted to analyze the photoluminescence (PL) properties of ordered and disordered CaWO4 (CW) and CaMoO4 (CM) powders. Two mechanisms were found to be responsible for ...
El sistema de comercio de emisiones del Acuerdo de París y el carbono azul
En el presente estudio se realizará un análisis del marco normativo para
el comercio de emisiones, con el objeto de exponer las dificultades que se
plantean a los proyectos de compensación de emisiones relacionados con ...
Tunable blue-green emission and energy transfer properties in Ba2SiO4:Tb3+ obtained from sol-gel method
(2019-10-01)
Herein, we introduce an adapted sol-gel synthesis of blue-green-emitting phosphors based on Ba2SiO4:Tb3+, which were obtained in a quite-soft calcination condition (1100 °C/2 h) as a monophasic crystalline phase, space ...
Spectroscopic properties and upconversion mechanisms in Er3+-doped fluoroindate glasses
(1996-03-01)
Fluorindate glasses containing 1,2,3,4 ErF3 mol % were prepared in a dry box under argon atmosphere. Absorption, Stokes luminescence (under visible and infrared excitation), the dependence of 4S3/2, 4I11/2, and 4I13/2 ...