Buscar
Mostrando ítems 61-70 de 2032
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 ...
Absolute photoluminescence quantum efficiency of P3HT/CHCl3 solution by thermal lens spectrometry
(ElsevierLausanne, 2013-01)
Thermal Lens Spectrometry (TLS), as well as all photothermal methods, rely on the determination of the fraction of absorbed energy converted in heat (φ), which in turn is related to photoluminescence quantum efficiency ...
Effect of pressure-assisted thermal annealing on the optical properties of ZnO thin films
(2012-12-21)
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 ...
Effect of pressure-assisted thermal annealing on the optical properties of ZnO thin films
(2012-12-21)
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 ...
Blue or red photoluminescence emission in α-Bi2O3 needles: Effect of synthesis method
(2018-01-01)
Monoclinic bismuth oxide (α-Bi2O3) has attractive optical properties and, therefore, its photoluminescence (PL) behavior has been increasingly explored. Besides this fact, the influence of synthesis methods on PL properties ...
Photoluminescence study of Eu3+ doped zinc-tungsten-antimonite glasses for red LED applications
(2020-12-01)
The rare earth ions doped glassy materials have become crucial capstone in solid state lighting due to their top-notch optical properties. In this work, Eu3+ doped zinc-tungsten-antimonite glasses with compositions of (60 ...
Photoluminescent property of mechanically milled BaWO4 powder
(Elsevier B.V., 2007-10-01)
Crystalline BaWO4 (BWO) powder obtained by the polymeric precursor method was structurally disordered by means of high-energy mechanical milling. For the first time a strong and broad photoluminescence (PL) has been measured ...
Photoluminescence property of Ba(Zr0.25Ti0.75)O-3 powders prepared by solid state reaction and polymeric precursor method
(Elsevier B.V., 2009-11-01)
Ba(Zr0.25Ti0.75)O-3 (BZT) powders were synthesized by the polymeric precursor method (PPM) at different temperatures (400, 500 and 700 degrees C) for 2 h and by the solid state reaction (SSR) at 1350 degrees C for 4 h. ...
beta-ZnMoO4 microcrystals synthesized by the surfactant-assisted hydrothermal method: Growth process and photoluminescence properties
(Elsevier B.V., 2012-02-20)
In this communication, we investigate the effect of different surfactants: cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS) and polyvinylpyrrolidone (PVP-K40) on the growth process of zinc molybdate ...
Photoluminescence property of Ba(Zr0.25Ti0.75)O-3 powders prepared by solid state reaction and polymeric precursor method
(Elsevier B.V., 2009-11-01)
Ba(Zr0.25Ti0.75)O-3 (BZT) powders were synthesized by the polymeric precursor method (PPM) at different temperatures (400, 500 and 700 degrees C) for 2 h and by the solid state reaction (SSR) at 1350 degrees C for 4 h. ...