NDLI: Optical properties of novel Sm$^{3+}$ activated distrontium magnesium disilicate phosphor

Content Provider	Springer Nature Link
Author	Mondal, Kanchan Manam, J.
Copyright Year	2017
Abstract	The Sm$^{3+}$ doped Sr$_{2}$MgSi$_{2}$O$_{7}$ phosphors were prepared via solid state reaction method. The prepared phosphors have characterised with X-ray diffraction (XRD), Field emission electron scanning microscope (FESEM), Diffuse reflectance (DR) spectroscopy, Photoluminescence (PL) together with decay curve. The XRD pattern shows the phase purity of the phosphors. In FESEM study the particle shows spherical morphology and consists of particles with irregular and different size distribution. The band gaps of the samples were found to be increased trend corresponding to increase the Sm$^{3+}$ dopant concentration. The strongest excitation and emission peaks were observed at 402 nm ($^{6}$H$_{5/2}$→$^{4}$F$_{7/2}$) and 603 nm ($^{4}$G$_{5/2}$→$^{6}$H$_{7/2}$) respectively. The Sm$^{3+}$ doped Sr$_{2}$MgSi$_{2}$O$_{7}$ shows yellowish color emission with the excitation wavelength of 402 nm. The prepared phosphor shows excellent thermal stability. The critical concentration of Sm$^{3+}$ ions in Sr$_{2}$MgSi$_{2}$O$_{7}$ lattice was found to be at 3 mol%. The critical energy transfer distance (R$_{c}$) of the prepared sample was found to be 17.36 Å. The concentration quenching procedure of the emission in the prepared samples for the transition $^{4}$G$_{5/2}$→$^{6}$H$_{7/2}$ was multipole–multipole interaction.
Starting Page	8793
Ending Page	8802
Page Count	10
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	28
Issue Number	12
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2017-02-26
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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