NDLI: Optical characterization of Eu$^{3+}$-doped sol-gel hybrid thin film prepared with various conditions

Content Provider	Springer Nature Link
Author	Oh, E. O. Kim, Y. H. Whang, C. M.
Copyright Year	2006
Abstract	Good optical quality Eu$^{3+}$-doped silica-polyethyleneglycol (PEG) hybrid films with covalent bonds between the inorganic (silica) and organic (PEG) phases were prepared by the sol-gel process. These materials are transparent, flexible and show high Eu$^{3+}$ luminescence output. Their luminescence properties, local environment around europium ion and structure have been investigated as a function of dopant concentration, molecular weight of PEG, PEG content and water content. Photoluminescence spectra of the samples prepared by different europium ion concentration showed that increasing the Eu$^{3+}$ concentration induces a decrease in the intensity of the host broad band in the green-blue spectral region and an increase in the intensity of a series of Eu$^{3+}$ intra 4f$^{6}$ yellow-red sharp lines. However, the sample with higher Eu$^{3+}$ concentration was found to exhibit concentration quenching of luminescence due to dopant clustering. Photoluminescence spectra of the samples with shorter polymer chains indicated that the distance between the hybrid’s emitting centers and the metal ions is large enough to allow efficient energy-transfer mechanisms. It was noted that luminescence intensity and sharpness were increased by increasing polymer concentration and decreasing water content.
Starting Page	335
Ending Page	338
Page Count	4
File Format	PDF
ISSN	13853449
Journal	Journal of Electroceramics
Volume Number	17
Issue Number	2-4
e-ISSN	15738663
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Europium Inorganic-organic hybrid Photoluminescnece Optical properties Lanthanide ion Electrochemistry Optical and Electronic Materials Characterization and Evaluation Materials Ceramics, Glass, Composites, Natural Methods Crystallography
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Mechanics of Materials Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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