Eu luminescence from BaTiO3/SiO2 multilayer xerogel structures
نویسندگان
چکیده
منابع مشابه
Luminescence Quenching of Eu(lll) Carboxylates by Cu(ll) in a Composite Polymer Xerogel Filmt
Three Eu(II1) luminescent compounds were separately entrapped in a xerogel porous silica matrix and finely ground particles of it were deposited on a glass support with polyvinylacetate (PVAc) as a binder to build a thin film sensor. These 3 devices were immersed in aqueous solutions of Cu(I1) and the content of this metal was evaluated by emissionquenching experiments. The sensor containing th...
متن کاملPreparation mechanism and luminescence of Sr2SiO4:Eu phosphor from (Sr,Eu)CO3@SiO2 core-shell precursor
Sr2SiO4:Eu phosphor for white light emitting diodes (LEDs) was synthesized by employing an as-prepared (Sr,Eu)CO3@SiO2 core-shell precursor as starting materials, and the effect of the core-shell precursor was also discussed on the crystal structure, particle morphology and luminescent properties of the resultant phosphor. The results showed that the hybrid βand α′-Sr2SiO4: Eu phosphor with fin...
متن کاملPersistent luminescence in MSi2O2N2:Eu phosphors
In this work we study the persistent luminescence properties of europium-doped alkaline earth silicon oxynitrides (CaSi2O2N2, SrSi2O2N2 and BaSi2O2N2). All compounds show afterglow emission, with an emission spectrum which is similar to the steady state photoluminescence. The afterglow decay time for BaSi2O2N2:Eu and SrSi2O2N2:Eu is about 50 and 100 minutes respectively, while for CaSi2O2N2:Eu ...
متن کاملEnhanced Luminescence of Eu-Doped TiO2Nanodots
Monodisperse and spherical Eu-doped TiO2nanodots were prepared on substrate by phase-separation-induced self-assembly. The average diameters of the nanodots can be 50 and 70 nm by changing the preparation condition. The calcined nanodots consist of an amorphous TiO2matrix with Eu3+ions highly dispersed in it. The Eu-doped TiO2nanodots exhibit intense luminescence due to effective energy transfe...
متن کاملEu(2+) luminescence in strontium aluminates.
The luminescence properties of Eu(2+) doped strontium aluminates are reported and reviewed for a variety of aluminates, viz. SrAl12O19, SrAl4O7, Sr4Al14O25, SrAl2O4 and Sr3Al2O6. The aim of the research is to investigate the role of local coordination and covalency of the aluminate host lattice, related to the Sr/Al ratio, on the optical properties of the Eu(2+) ion. The UV and VUV excited lumi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Advanced Dielectrics
سال: 2020
ISSN: 2010-135X,2010-1368
DOI: 10.1142/s2010135x20500058